436 



PSrCHE. 



[November — December 1890 



Pecos River, Tex. (Capt. Pope). Mr. 

 P. R. Uhler has also given ine speci- 

 mens from Kansas and Texas. It seems 

 to have been oftenest taken near its first 

 known locality, on the upper Arkansas, 

 east of the mountains. 



The next genus mentioned in the 

 table is closely allied to the preceding, 

 but departs in a greater degree from the 

 Oedipodine type. Except for lacking 

 a metazonal crest on the pronotum, it 

 bears indeed a striking resemblance to 

 Acrolopkitus, a resemblance which is 

 most marked in the strange form of the 

 head in both. The points, however, in 

 which it further departs from the nor- 

 mal Oedipodine type are not many and 

 may be summed up as follows : The 

 prozona and metazona are of equal 

 length, the latter obtusely and roundly 

 angulate behind, the angulation scarcely 

 perceptible ; the basal third or fourth 

 of the marginal area of the tegmina is 

 reticulate indeed, but the reticulation is 

 sometimes mostly made up of crowded 

 transverse veinlets interlinked by inos- 

 culating longitudinal veins ; and the 

 axillary vein unites with the anal by the 

 end of the basal fourth of the wing, 

 much as in Tropidolophus. It does 

 not appear to have been described, and 

 mav be characterized as follows. 



ACKOCARA (aKpos, Kcipa) gen. nov. 



Body slender, subfiisifonn. Head of the 

 same general form as in Acrolophitiis., but 

 somewhat more slender and with the fronto- 

 vertical process sometimes somewhat more 

 advanced; the vertex attenuate and conical 

 in front, slightly declivent at extreme tip, 

 forming in general considerably less than a 



right angle with the upper, gently convex 

 portion of the frontal costa ; its upper sur- 

 face is plane or plano-convex; frontal costa 

 very similar to that of Acrolophitus but not 

 so strongly compressed above the ocellus 

 and compressed more uniformly and over a 

 broader area, allowing the median sulcus to 

 extend to the vertex though as slender as 

 possible in the compressed portion; its sides 

 are also less regularly convergent, being 

 either disturbed by a rounded divergence, 

 just above the extreme base, which just fails 

 of reaching the clypeus or else parallel 

 below; lateral carinae of the face moderate, 

 straight, divergent ; fastigia and lateral ocelli 

 as in Acrolophitus.. Eyes small, not very 

 prominent, a little longer then half the in- 

 fraocular portion of the genae. Antennae 

 twice as long as the head and thorax to- 

 gether, longer than the hind femora, moder- 

 ately coarse, the first joint as in Acrolophitus, 

 tiie succeeding joints cylindrical and equal 

 and the joints of the apical two thirds 

 punctate ((J), or a little more than half as 

 long again as head and thorax together, 

 shorter than the hind femora, the joijits 

 beyond the basal sometimes depressed and 

 then tapering to the apex ( ? ). 



Prothorax with the prozona subquadrate 

 with parallel sides, the dorsum not depressed 

 but regularly arched transversely, in the ? 

 with a slight tendency to be tectiform, the 

 metazona tapering strongly forward and 

 slightly tumid, the dorsum depressed but 

 slightly tumid, this tumidity with the ele- 

 vated head giving the whole a somewhat 

 selliform aspect; prozona with the median 

 carina subobsolete, distinctly intersected not 

 only by the exactly transverse, typical sulcus, 

 but also by two additional sulci, between 

 which the carina is sometimes entirely ob- 

 literated; metazona with a distinct but 

 slight and uniform median carina fading at 

 the extremities, the hind margin obtusely 

 and roundly angulate. the lateral carinae 

 distinctly intersected by the typical sulcus 

 which extends normally into the lateral lobes ; 



