184 
Hippoboscidae (Dlptera Pupipara) 
the middle. The spaces between these lines and the lateral margins tend to 
be more or less chitinized and these areas are beset with numerous setae. 
Behind these lines the dorsum is membranous except for two small, transverse, 
pre-apical sclerites, and bears but a few scattered setae. 
On the ventral side the basal sternite is quite heavily chitinized and is 
divided by a deep posterior emargination into two pronounced lobes the tips 
Fig. 2. Lipoptena mazamae Rondani: A, posterior extremity of larva showing spiracular openings; 
h, genitalia of male. Lipoptena depressa (Say): B, wing; D, anterior tarsus; F, genitalia of male. 
Lipoptena subulata Coq.: C, anterior tarsus. Lipoptena traguli n. sp.: G, genitalia of male. 
of which are free. The entire sternite is beset with numerous stout setae. The 
remainder of the venter is quite thickly beset with small, slender setae. 
Genitalia of the male (Fig. 2 F) without external processes, the position 
of these ( b ) indicated merely by two or three small setae. We are not prepared 
to discuss the homologies of the internal parts—to do so would necessitate a 
separate study for which we scarcely have the material—and must content 
ourselves with a general description. They consist of a pair of stout, chitinized 
