182 
Hippoboscidae (Dip ter a Pupipara) 
In both of these larvae the posterior portion of the body is heavily chitinized. 
There are no distinct spiracles, the place of these being taken by a large number 
of small, pore-like openings which communicate with tracheal branches, the 
arrangement being somewhat like that of the polypneustic lobes described by 
Newstead as occurring in the larva of Glossina. In the larva of L. mammae 
(Fig. 2 A) these openings are very numerous, are arranged in two general series 
and appear to occur on both the dorsal and ventral sides of the body. In that 
of L. depressa they appear to be very few and confined to one side of the body, 
but our single specimen is in too poor condition for study to permit a definite 
determination of the condition. 
Lipoptena depressa (Say). 
Figs. 1, 2B,2D,2F. 
1823. Melophagus depressus Say, Journ. Acad. Sci. Phil. in. 104. 
1907. Lipoptena depressa (Say), Coquillet, Ent. News , xvm. 290. 
Previous Records. Originally described by Say from Cervus virginianus, 
without indication of locality. This is probably some sub-species of the deer 
now known as Odocoileus americanus, which ranges throughout a large part 
of North America east of the Rocky Mountains. Recorded by Coquillet from 
“black tailed deer'* (Odocoileus columbianus) from Humboldt County, Cali¬ 
fornia. 
Speiser has placed L. mazamae Rondani as a synonym of this, but, as 
will be pointed out below, we regard this as an error. 
Specimens Examined. Numerous examples from sub-species of 0. colum¬ 
bianus from the following localities in California: Humboldt County; Gualala 
and Laytonville, Mendocino County. Also from “deer" at Deer Park, British 
Columbia, Canada, and specimens taken in flight at Sobre Vista and on 
Mt Wilson and from unstated locality in California. 
Notes. The original description of Say contains little of value except the 
statements that there are “two impressed lines from the base to the margin 
beyond the middle" of the dorsum of the abdomen and that the venter of 
the abdomen has an “arquated series of spines near base." These characters 
will permit the positive separation of the species from L. subulata Coq. but 
not from more closely related forms such as L. mazamae Rondani. We present 
the following notes on the species, indicating the most salient characters. 
The sexes are very similar except for the characters associated directly 
with the genitalia, and we are figuring the female only (Fig. 1). 
Head above almost destitute of setae. There is some variation, some 
specimens showing but a single pair of large setae on the front, others showing 
two pairs and a few smaller setae, but in no case are these setae to be described 
as numerous. The front (as in most Hippoboscids) shows a median area or 
frontal vitta which presents a roughened appearance and the posterior margin 
of which bounds a semicircular area about the ocelli. The form and extent 
