1874.] 



271 [Scudder. 



that I have placed it there with much doubt ; and have also, on that 

 account, given in my description some parts which more properly 

 belong to a generic diagnosis. 



Aplatacris nov. gen. (aTtXaTLq, a/.plq.} 



Allied to Lophacris Scudd. Head large, full ; space between eyes 

 equal to (?), or less than (d 1 ), the longer diameter of the eye; me- 

 dian frontal ridge prominent, narrow, sulcate, no broader than the 

 width of the first antennal joint. Antennae scarcely shorter than the 

 hind tibiae. Pronotum with a very high, very stout crest, divided 

 into four sections by very deep, transverse sulcations, all but the 

 foremost of which traverse the whole pronotum, the hindmost 

 breaking the otherwise regular curve of the dorsal carina ; anterior 

 edge of pronotum produced forward rather more than in Lophacris, 

 and angulated ; posterior margin acutely angled ; anterior two thirds 

 sparsely covered with very elevated granulations; on the posterior 

 third they are more abundant, more or less confluent and compressed, 

 the spaces between them rugose ; prosternal thorn large, stout, straight, 

 bent backward in the cT, conical, bluntly pointed. Tegmina scarcely 

 reaching the tip of the abdomen, but little more than three times as 

 long as broad, equal throughout, the apex pretty regularly rounded, 

 all the nervures prominent ; wings shorter than the tegmina, exceed- 

 ingly broad, rounded, the longitudinal veins distant and the border 

 of the wing full between them; cross veins at tip as regular, and the 

 cells as large, as in other parts of the wing ; area between the first 

 and second branches of anal vein not noticeably broader than in the 

 adjoining areas and divided by cross veins into spaces about half as 

 long again as broad, similar in the two sexes ; second branch of the 

 anal vein straight in both sexes, emitting a little beyond the middle a 

 stout superior shoot; intercalary veins of anal area reaching at 

 least half way toward the base of the wing. Outer surface of hind 

 femora swollen. Abdomen stout. 

 24. Aplatacris colorata nov. sp. 



Greenish testaceous, the male duskier. Upper half of head smooth, 

 lower half distinctly rugulose. Tegmina brown with greenish ner- 

 vures. Wings blackish purple, the disk broadly chocolate brown and 

 the transverse vein of this part with pellucid borders giving a mottled 

 appearance to the wing. Spines of hind tibiae pretty stout, blackish. 

 Length of body, d 56, ? 79 mm.; of antennae, 6 29, ? 36 mm.; 



