PSYCHE. 



[January 1897- 



when they rise. Ch. viridifasciata. 

 E. so, didus, and C. fellucida are ex- 

 ceptions to this and may generally be 

 readily obtained by the usual method of 

 sweeping, only an occasional specimen 

 of the other species being secured in 

 this manner. The hirger part of the 

 specimens in my collection, about 2000 

 in number, have been taken personally, 

 and I have met in the field all of the 

 species treated with the exception of 

 Hippiscus rugosus. 



Correlated with their active aerial 

 habits is the uniformly well-developed 

 condition of the flight-organs; not a 

 solitary example with abortive wings is 

 known to me of the New England 

 species of this subfamilv, — a peculiarity 

 in which it presents a marked contrast 

 to the others. Consequentlv, as being 

 of but relatively slight interest I have 

 omitted from the measuiements here 

 given the extent of the tegmina beyond 

 tlie hind femora. 



DESCRIPTION OF THE BOT-FLY OF THE COTTON-TAIL 

 RABBIT IN NEW MEXICO, CUTEREBRA LEPUSCULI N. SP. 



RY C. II. r^I.ER TOWNSEND. LAS CRUCES. X. M. 



Upon examiiiati(Mi ot Mr. E. E. 

 Austen's two papers on Cuterebra, 

 in the May and August, 1895, num- 

 bers of the Annals and Magazine of 

 Natural History, and a re-examination 

 of my material from cotton-tails and 

 jack-rabbits, two points become very 

 evident. One is that the species, which 

 I have so far referred to C. fonthieUa 

 Clark, is a new species ; and the other 

 is that the bots taken from jack-rabbits, 

 which I referred to Dermatobia, belong 

 to the new genus Bogeria of Austen. 

 For my previous papers, the reader is 

 referred to Psyche, vol 6, pp. 298-300 ; 

 and Insect Life, vol. 5, pp. 317-320. 

 My certainty in determining my speci- 

 mens as C. fontinella rested on the 

 general agreement of Clark's descrip- 

 tion, the similar host habit, the not 

 too greatly removed locality of Clark's 

 species, and the fact that but little 

 reliance can be placed in man\' cases 



on the measurements of the old authors 

 when given in lines. But since Mr. 

 Austen, with the necessary material 

 and plates at his command, has deter- 

 mined C. fontinella Clark beyond 

 doubt to be a much smaller and very 

 difierent species from my own, it be- 

 comes evident that my conclusion was 

 wrong. The following description is 

 that drawn from 1113- two bred speci- 

 mens described in Insect Life. These 

 specimens are now in the collection of 

 the University of Kansas. 



Cuterebra lepusculi n. >p. 



Cut. fontinella Towns. Iiis. Life, v. 319 

 (nee. Clark and Austen.) 



?. _Lengtli of body, 20.5 mm. to 21 mm.; 

 width of abdomen, 9 mm. to 95 mm. ; width 

 of thorax, 9 mm. or a little more; width of 

 head, S mm to S.25 mm.; length of wing, 

 16 mm. to 16.25 uim. Front about seven-six- 

 teenths width of head at vertex, gr.avish- 

 black, scanlilv grayish-hairv, with two 



