THE CANADIAN ENTOMOLOGIST. 181 



Anabrus Haldeman (Stansb., Salt Lake, 372). 

 This genus was founded upon a species from Salt Lake, A. simplex, 

 and the genus seems to be mainly confined to the elevated country west 

 of the Mississippi prairies. Three other nominal species have been 

 described, A. purpurascetis Uhl., A. simiiis Scudd., and A. coloradus 

 Thom., but whether these are all distinct or are all that exist in our col- 

 lections, I have not yet endeavoured to determine. All the above, how- 

 ever, certainly belong to Anabrus, but three others, originally described as 

 Anabri, belong, as noted above, to Orchesticus. 



Peranabrus, Gen. nov. 

 This generic name is proposed for ThamiioU-izon scabricoUis Thom., 

 from Southern Montana, which, except for its scabrous pronotum, has 

 much the aspect of an Anabrus. It differs from it, however, in lacking 

 spines upon the inner margin of the fore-tibi?e above, and in its distinctly 

 carinate pronotum. It is poorly figured by Glover in his 111. N. A. Ent., 

 Orth., pi. 13, fig. 6. 



CacOPTERIS (K-aKos~, Trrepov), Gen. nov. 

 This genus, containing half a dozen species of minor size, none of 

 which have been described, is remarkable for the fact that the inner 

 margin of the upper surface of the fore-tibiae is sometimes spined and 

 sometimes unarmed ; generally individuals of the same species seem to 

 be always either one or the other, but in at least two of them, individuals 

 of the same species differ in this respect, the males being more frequently 

 spined than the females ; when armed, there are always three spines pres- 

 ent. The genus is peculiar to California and Western Nevada and the 

 southern margin of the United States as far east as the upper Rio Grande. 

 It has somewhat the aspect of the European Antaxius. 

 Eremopedes (€pi]/xos, 7r7/Saw), Gen. nov. 



Founded on an Arizona species, of which a single $ is in the U. S. 

 National Museum. It has a very uniformly rounded, slightly compressed 

 body, with a general resemblance to the smaller forms of Orchesticus. 



Idiostatus Pictet (Me'm. Soc. Phys. Gen., XXX., vi. 63). 



Two species of this genus have been described ; a smaller, /. her- 

 fnanni {Steiroxys hertnanni Tho'&.^^Idiostatns californicus Pict.), and a 

 larger, /. bllineata (Steiroxys bilifieata Thom.), and there is what is ap- 

 paiently a third species, with excessively long ovipositor, in the U. S. 

 National Museum. All the species come from California and Oregon. 



