. The fauna of Mayfield's cave. Cave animals. Fig. 7.—Pupa of Oecotliea fenestralU, Dorsal view, x December 16, 1903, from a piece of cheese which had been left as bait at " 41," several larvae and part of the bait were taken from the cave and stopped up in a bottle. January 8, three larvae were separated from the others. These must have been eggs or very small larvae when taken, as others from the same material had emerged before. January 8 one was drawn (fig. 6). The next day one of the larvae pupated. January 11 a second pupated, and on the 15th the third. The pupae were kept
. The fauna of Mayfield's cave. Cave animals. Fig. 7.—Pupa of Oecotliea fenestralU, Dorsal view, x December 16, 1903, from a piece of cheese which had been left as bait at " 41," several larvae and part of the bait were taken from the cave and stopped up in a bottle. January 8, three larvae were separated from the others. These must have been eggs or very small larvae when taken, as others from the same material had emerged before. January 8 one was drawn (fig. 6). The next day one of the larvae pupated. January 11 a second pupated, and on the 15th the third. The pupae were kept with dirt slightly moist. February 2 two flies were in the bottle. The third pupa had died. One pupa was drawn in several positions (figs. 7, 8, and 9). The larva is cylindrical, rap- idly tapering toward the front and truncate behind. It is white and has a dark, some- what Y-shaped area at the head. The segments are indistinct, but the trachea and spiracles are easily visible. Its length is mm.; thickness, mm. The pupa is plump, smooth, and shining. It is light reddish- brown, with the spiracles and posterior margin darker red- dish, becoming darker on an- terior five segments and espe- cially on anterior three. The first segment is very dark; the second and third are somewhat lighter; the fourth and fifth are much lighter, and the sixth to last segments about a uniform tint. , width mm., diameter mm. Lerla latens Aldrlch. Rep. Ind. Geol. Surv., xxi, 1896, 188 (Donnehue's, Shiloh, Porter, and Mayfield's caves in Indiana); Cat. N. A. Dip., 1905, 573. Very abundant; the most abundant species of Helomyzidae in the cave. Found from the mouth to the mound, where it becomes scarce. It is most abundant from "5" to " 17," and is common from the mouth to "; It has been rarely noted beyond the mound. During the summer this species becomes extremely abundant near the mouth, so PlO. 8.—Pupa of Oecothea fenestralU. Ventral
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