456 PROCEEDINGS OF THE AMERICAN ACADEMY. 



more than lialf as long again as the head and pronotum together in the 

 male, luteous, faintly infuscated apically. Pronotum well arched, in no 

 way tectate, but with a delicate percurrent median carina in the middle 

 of a gradually diminishing but percurrent luteo-testaceous median stripe, 

 the remainder of the disk ferrugineo-fuscous, the lateral lobes the same 

 with a strongly oblique anterior and inferior luteo-testaceous patch, edged 

 above with fuscous fading superiorly ; prozona roundly produced anteriorly, 

 slightly shorter than the metazona, which is very slightly broader than 

 at the eyes, posteriorly rectangulate (^) or faintly obtusangulate (9), 

 the angle narrowly rounded. Prosternal spine moderate, cylindrical, 

 blunt, erect or suberect. Tegmina extending well beyond the abdomen, 

 slender, with a pallid luteous streak basally in the costal area, in the male 

 otherwise immaculate or nearly so, in the female sparsely and rather 

 feebly maculate in the median area and particularly along the median line, 

 all the maculations small ; wings vitreous, with an exceedingly feeble 

 infumation, most distinct apically. Fore and middle femora not enlarged 

 in the male ; hind femora ferrugineo-testaceous, with hoary outer face 

 and the carinas punctate with fuscous ; hind tibia3 ferrugineo-testaceous, 

 the spines luteous with black tips. Male cerci very small, straight, hardly 

 twice as long as broad, ta})ering to a blunt rounded tip ; subgenital plate 

 slender, haustrate, somewhat compressed, subacuminate, apically narrowly 

 and not very deeply fissate. 



Length of body, <J , 31 mm., 9-1 55 mm. ; antennre, $, 14.5 mm., 9> 

 18 mm. ; tegmina, (^ , 31 mm., 9 5^0 mm. ; hind femora, ^ , 11 mm., 9> 

 32 mm. 



1 (? , 4 9. Rio de Janeiro, Brazil, Nov. (Mus. Comp. Zool.) ; Vic- 

 toria, Brazil, May (Bruner). 



I know of no species of Schistocerca in which the male cerci are so 

 narrow at apex as here ; the next species is the most closely allied in 

 that respect. 



14. Schistocerca flavofasciata. 



Acri/diumjfnvqfasciaium DeGeer, Mem., III. 488, pi. 40, fig. 8 (1773). 

 Acrldium {Schistocerca) flarofasciatum Stal, Rec. Orth., I. 67 (1873). 

 Gryllus nitens Thunb., Mem. Acad. St. Petersb., V. 236 (1815) t. Stal. 

 Gri/Ihisjimbrlntiis Thunb., Loc. cit., IX. 428 (1824) t. Stal. 

 Gnj/lus livichis Thunb., Loc. cit., IX. 428 (1824) t. StSl. 

 Acrldium hmrjipenne Burm., Handb. Ent., II. 632 (1838) t. Stal. 



The only specimens I have seen are from Rio de Janeiro Nov. (Mus. 

 Comp. Zool.), and Corumba, Brazil, March, April (Mus. Comp. Zool.). 

 It was originally described from Brazil. 



