40 



FAUNA OF MAYFIELD'S CAVE. 



This is one of the most active of the flies found in the cave. It crawls 

 rapidly and flies readily. When strong light is thrown upon it it crawls 

 away or takes wing quickly and when found must be caught instantly 

 if at all. The larvas and adults live upon decaying vegetable and animal 

 matter. The larvae of this species and other larvae were brought into 

 the laboratory in pieces of bait which had been in the cave. The larvae 

 were not distinguished from others, but the pupae were identified and 

 two drawings made (figs. 4 and 5) . 



This species has been recorded from Wyandotte Cave, and I have 

 taken it in Twin Cave and Mayfield's. 



Aphlochaeta (Phora) ruflpes Melgen. 



Meigen, System. Beschre., vi, 216 (Europe and North America). Aldrich, Cat. 

 N. A. Dip., 1905, 337. 



Two specimens, probably belonging to this species, were taken at the 

 first bend in bright twilight. It is possibly not uncommon in Mayfield's 

 Cave, and others of this species may have been mistaken for nigriceps. 

 It has been recorded from Mammoth Cave (Call, 1897, 386), and I have 

 it from Twin Cave. 



FiQ. 4.— Pupa ofApMochceta nigriceps. 

 Side view. X 15. 



FiQ. 5. — Pupa of AphioduRia nigriceps. 

 Dorsal view. < 16. 



The occurrence of Aphiochxta in caves has been mentioned by many 

 collectors. Phora has been recorded from Mammoth, Carter, and Wyan- 

 dotte caves by Osten Sacken (Packard, 1871, 745, and 1888, 80), Cope 

 (1872a, 161), Hubbard (1880, 39), and others. 



Family MUSCIDAE, 

 CalUphora vomltoria (Linnaeus) . Bluebottle Fly. 



LiNNiEUS, Fauna Suec, 2ded., 452 (Sweden). Aldrich, Cat. N. A. Dip., 1905, 520 

 (Europe, Canada, Alaska, United States) . 



One seen in the cave in February, 1905, on the side of a small stone 

 at " 21. " It was dormant when found, but when brought in and warmed 

 up became active. 



Musca domestlca Linnaeus. Common House Fly. 



LnWiEUS, Syst. Nat., 10th ed., 1758 (Europe). ALDRICH, Cat. N. A. Dip., 1905, 528 

 (almost cosmopolitan) . 



A single house-fly was found within the cave April 4, 1903. 



