N0.1215. REVISION OF THE flEXVS TIUM EROTnoi'lS—M'NETLL. 441 



row, sc'iircely more than a ti I'll 1 (lie Icii^rli of the wiiio- in width, but 

 wvy distinct, continued upon (lie postcrioi' niaru'in inoi-c Ihiui hulf- 

 way to the anal ang'h'; spur short. (>xt(Midin<>- phiiidy h'ss than halfway 

 to the base; apical portion hyaline without fuscous spots. Posterior 

 femora not plainly banded exteriorly, with the lower sulcus obscurely 

 infuscated rather than ])lack, with one or two indistinct li<>-ht l)ands 

 on the apical half. Postei'ior til)ia' deep brown darker on the basal 

 half, where this color, however, is interrupted by a lig-hter annulus. 



L(Mio-th of body, male, ItJi nun.; lenoth of teomina. 2(> mm.: leuL'tli 

 of posterior femora, '.'i nun. 



One nvale, Palo Alto, Califoi-nia, March 17; Stanford University 

 collection. 



This species is the smallest Triiiieroti'optH known to me, easily recog- 

 nized by its broad wing-s, brown posterior tibia", and unusually hair}^ 

 body. Another specimen from Palo Alto, which I would refer to Tr/'- 

 inerotro2)is vincidata^ without doubt, except for the fact of its having 

 the right posterior tibia 3^ellow, while the left one is deep brown. It 

 is not unlikely a hybrid produced l)y these species. 



FALLAX group. 



Brown, more or less deeply infuscated and maculate. Frontal costa 

 sulcate below the ocellus, but, except for a very short distance, full, 

 rounded, and punctate above. Scutellum of the vertex much longer 

 than wide, with the central foveolse only feebly biarolate l)ut very dis- 

 tinct, lateral foveoke only a little less distinct. Pronotum with the 

 dorsum rather flat and the shoulders well marked, with lateral carinae 

 distinct on the front of the prozone at least; median carina cristate on 

 the prozone, scarceh" more than a raised line on the metazone; the 

 latter from once and a half to twice as long as the prozone, with its 

 dorsum furnished with a few larger granulations; lateral lobes never 

 toothed. Tegmina broad, with the maculations distinctly annular and 

 scattered pretty evenly over the whole surface or rarely gathered into 

 the usual bands; last branch of the radial sector distant from the fork 

 about one-fourth the length of the sector. Wings never more than 

 twice as long as wide, with the outer half fuscous or the apical part 

 fuliginous or rarely onl}^ infuscated at the tip; the spur long, reaching 

 fully half way to the base; the disk yellow. Posterior femora with 

 the disk of the inner face black, with two light bands on the apical 

 half; lower sulcus black, with one light sul)apical band. Posterior 

 tibia? never bright red. 



The species in this group all bear a strong resem))lance to Circot- 

 tettix, especially to Circotettix sufimis and ohscurus Scudder and verru- 

 eulatus Kirby. They arc all closely related, and may prove to be 

 varieties of a single species. 



