OF WASHINGTON, VOLUME XIV, 1912. 187 



generic. He showed Atherix ibis Fab., from Europe, and A. 

 variegata Walk., from the northern part of our continent, and 

 contrasted with them A. longipes Bell., and three other 

 species, all from the warmer parts of America. The four 

 tropical species agreed in their graceful form, longer and 

 more slender legs and a number of evident characters. Mr. 

 Knab said that he was unwilling to propose a generic name 

 at this time, as a number of genera had been created agree- 

 ing in general characters with Athemx and usually placed as 

 synonyms of it. The status of these genera should be carefully 

 established before creating a new one. 



Mr. Banks said that he was of the opinion that the southern 

 forms are probably a new genus, since the European and 

 Northwestern species of Atherix are locally common and if 

 they are blood-suckers the habit would have been noticed long 

 ago. 



The third paper, "A New Genus and Species of Gryllidie 

 from Texas," by A. N. Caudell, was read by title. 



A NEW GENUS AND SPECIES OF GRYLLID^ FROM TEXAS. 



BY A. N. CAUDELL. 

 TRIGONIDOMIMUS n. gen. 



Description (Female, the male unknown). This genus belongs to the 

 subfamily Gryllinse, but bears a strong superficial resemblance to Cyr- 

 toxipha and related genera of small crickets of the subfamily Trigonidiinae. 

 The second segment of the tarsi is minute, not at all depressed or cordi- 

 form. Hind tibiae more slender than usual in the subfamily Gryllina? and 

 armed above on the outer half with three spurs on each margin and on 

 the basal part there are a few serrations, small but distinct when viewed 

 through a hand lens. There are five apical calcaria, two ventral ones 

 subequal in length and both short, scarcely as long as the tibial spines, and 

 two longer ones on the inner side and one on the outer. On the inner side 

 the middle calcar is about three times as long as the ventral one and the 

 upper one a fourth longer than the middle. The second outer calcar is 

 fully as long again as the ventral one. Metatarsus of hind tarsi rounded 

 above, armed only with hairs, as are also the hind tibiae between the spurs 

 and serrations. Fore tibiae furnished with foramina only on the anterior 

 face. Head large and rounded, broader than the pronotum, the front 

 convex; eyes very small and but little prominent. Antenna; inserted 



