A NEW GENUS AND SPECIES OF TABANIDAE. 



BY J. M. AI.DRICH, BROOKINGS, SOUTH DAKOTA. 



The general appearance of the fly is 

 that of a particularly fine large silvery 

 Hippoboscid, with brown wings. Nev- 

 ertheless, an examination sliows it to be 

 truly Tabanid in every respect ; in fact, 

 I was at some loss for a while to fix 

 upon a set of generic characters which 

 would clearly separate it from all the 

 present genera of Tabanidae. The vena- 

 tion is normal ; the antennae resemble 

 Pangonia in shape and number of an- 

 nulations ; the face is that of Chrysops. 

 The upper corner of the eye, making 

 an angle of about 70 degrees, and not 

 in the least rounded oft at the tip, but 

 rather produced a little in a very fine 

 point, beyond which is an impressed 



Its habits are unknown, but from its 

 appearance the conclusion looks prob- 

 able that it lives like a Hippoboscid 

 upon some bird or mammal. Still, 

 there are no modifications of structure 

 that give strong support to this theory. 

 Its claws are distinctly larger than those 

 of Tabani of its size, and the large pits 

 at the bases of the hairs on the first and 

 second antennal joints seem to indicate 

 an unusual development of the sense of 

 touch in this region ; both of which 

 peculiarities are not without weight. 



GoNioPS n. gen. 

 Spurs present on hind tibiae, absent from 

 front ones. Ejes narrow, terminating above 

 in an acute angle. Ocelli present. Front 

 line, running to the occiput, is one of broad in female, the callosity longitudinal, 

 the best characters. The general pro- Proboscis in repose directed forward. Tho- 

 portions of the body, also, are difterent '"''''' strongly arched, subglobular. Abdomen 

 r ^\ r ii 1 r .1 (from tip of scutellum) not longer than, 



from those 01 any other members or the •,,,,,, , ,,- 



•' and head but about halt as wide as, the 



family known to me. thorax. 



