Hyginus Fabulae, 195
Orion.

When Hercules had been sent by King Eurystheus after the three-headed dog, Neptune's son Lycus, thinking that Hercules had perished, desired also to murder Megara, Creon's daughter, Hercules' wife and his sons Therimachus and Ophites, and he planned thereby to usurp the kingship.
Hercules interceded and killed Lycus. Afterwards, when in a fit of rage cast upon him by Juno, Hercules killed Megara and his sons Therimachus and Ophites.
After he recovered his wits, he sought an oracle from Apollo as to how he might expiate the crime. Because Apollo refused to offer him a response, Hercules exploded in anger and took Apollo's tripod from the sanctuary, and he commanded the unwilling god to produce the oracle. Hercules, according to this response, was given by Mercury into servitude to Queen Omphale.
—— trans by RTM


orion.

Hercules cum ad canem tricipitem esset missus ab Eurystheo rege et Lycus Neptuni filius putasset eum periisse, Megaram Creontis filiam uxorem eius et filios Therimachum et Ophiten interficere uoluit et regnum occupare.
Hercules eo interuenit et Lycum interfecit: postea ab Iunone insania obiecta, Megaram et filios Therimachum et Ophiten interfecit.
postquam suae mentis compos est factus, ab Apolline petiit dari sibi responsum quomodo scelus purgaret; cui Apollo sortem quod reddere noluit, Hercules iratus de fano eius tripodem sustulit, quem postea Iouis iussu reddidit, et nolentem sortem dare iussit.
Hercules ob id a Mercurio Omphalae reginae in seruitutem datus est.


Hyginus Astronomus Poet. Astron. 2.7, 2.14, and 2.16

The Lyre was set among the stars because, as Eratosthenes says, it is the lyre first made from a tortise shell by Mercury then given to Orpheus, the son of Callipe and Oeagrus, who was especially well practiced on it. ... Others, though, say that Mercury, when he had made the first lyre in Arcadia on Mt Cyllene, then invented seven chords — equalling the number to the seven daughters of Atlas, because Maia was one of them and she is the mother of Mercury. Afterwards, when Mercury had absconded the cattle of Apollo and was apprehended by him, so as to the more easily be forgiven, Mercury allowed that Apollo be permitted to claim that he had invented the lyre, and he got from Apollo a certain staff. Mercury held this in his hand when he proceeded to Arcadia and saw there two serpents going at each other, their bodies twisted all about one another, so much that they seemed to be fighting, and he trust that staff in between them. This made them separate. After this he said that the staff was set up for the sake of peace. Many artists, when they make replicas of the caduceus fashion two serpents twining around the staff because Mercury marked the beginning of peace. By this example, also, officials use the staff at athletic and similar competitions. (3) But, in order to return to our argument, Apollo is said to have received the lyre and then taught Orpheus how to play it...
Other [astronomers who define the constellation Ophiuchus] say that the constellation is Hercules killing the snake in Lydia at the River Sagaris. He killed many people and was making prayers with grain offerings on the riverbank. For this deed, Omphale, who was then queen of Lydia, sent Hercules back to Argos laden with many gifts; later he was set by Jupiter among the stars on account of his heroism (i.e. his "fortitudo").
Regarding the constellation called The Eagle: This is said to be the eagle that abducted Ganymedes and brought him to his lover Jupiter... Aglaosthenes, however, wrote in his Naxica that Jupiter was sneaked off to Crete and taken to Naxos and raised there. When Jupiter grew up to the age of manhood and wanted to punish the Titans in a war, the eagle flew over as he was performing sacrifice. Jupiter appreciated this good omen and placed the eagle among the stars. Many other sources, though, say that the constellation is Mercury (some say that it is Anaplades) who was burning with love for Venus' loveliness, and since he was not wealthy enough, was mocked and became discouraged. Jupiter, it is said, took pity on him, and, when Venus was bathing in the River Achelous, sent an eagle to take her slipper to Mercury at Amythaonia in Egypt. Venus came after it, to get it back. And he, made rich (sc. by the transaction) place the eagle as a thank-offering in the heavens.
2.7.1 ff.
Lyra inter sidera constituta est hac, ut Eratosthenes ait, de causa, quod initio a Mercurio facta de testudine, Orpheo est tradita, qui, Calliopes et Oeagri filius, eius rei maxime studiosus fuit. ...(2.7.2) Alii autem dicunt Mercurium, cum primum lyram fecisset in Cyllene monte Arcadiae, septem chordas instituisse ex Atlantidum numero, quod Maia una ex illarum numero esset, quae Mercurii est mater. Deinde postea cum Apollinis boues abegisset, deprehensus ab eo, quo sibi facilius ignosceret, petenti Apollini ut liceret se dicere inuenisse lyram, concessit, et ab eo uirgulam quandam muneri accepit. Quam manu tenens Mercurius, cum proficisceretur in Arcadiam et uidisset duos dracones inter se coniuncto corpore alium alium adpetere, ut qui dimicare inter se uiderentur, uirgulam in utrumque subiecit;itaque discesserunt. Quo facto, eam uirgulam pacis causa dixit esse constitutam. Nonnulli etiam, cum faciunt caduceos, duos dracones inplicatos uirgula faciunt, quod initium Mercurio fuerat pacis. Eius exemplo et athleticis et in reliquis eiusmodi certatio nibus uirgula utuntur. (3) Sed ut ad propositum reuertamur, Apollo lyra accepta dicitur Orphea docuisse, ...

Alii autem Herculem esse demonstrant, in Lydia apud flumen Sagarim anguem interficientem, qui et homines complures interficiebat et ripam frugibus orbabat. Pro quo facto ab Omphala, quae ibi regnabat, multis ornatum muneribus Argos remissum, ab Ioue autem propter fortitudinem inter sidera conlocatum.

2.16 Aquila. Haec est quae dicitur Ganymedem rapuisse et amanti Ioui tradidisse; ... (2) Aglaosthenes autem, qui Naxica scripsit, ait Iouem Cretae subreptum, Naxum delatum et ibi esse nutritum. Qui postquam peruenerit ad uirilem aetatem et uoluerit bello lacessere Titanas, sacrificanti ei aquilam auspicatam; quo auspicio usum esse et eam inter astra conlocasse. Nonnulli etiam dixerunt Mercurium, alii autem Anapladem pulchritudine Veneris inductum in amorem incidisse; et cum ei copia non fieret, animo, ut contumelia accepta, defecisse. Iouem autem misertum eius, cum Venus in Acheloo flumine corpus ablueret, misisse aquilam, quae soccum eius in Amythaoniam Aegyptiorum delatum Mercurio traderet; quem persequens Venus ad cupientem sui peruenit. Qui, copia facta, pro beneficio aquilam in mundo conlocauit.