SCUDDER. — NORTH AMERICAN TRYXALINiE. 55 



c' 2 . Male antennas shorter than thorax and abdomen combined ; lower margin 

 of lateral foveola? of vertex distinct; tegmina generally maculate, generally 



fully as long as the relatively shorter hind femora elliotti Thorn. 



b 2 . Pronotum but feebly constricted mesially, the disk of subequal width and uni- 

 colorous, the lateral carinae divergent only, and but little, behind. 



parallelum sp. nov. 



Aulocara rufum sp. nov. 



Head well rounded, rather large, ferrugineo-cinereous, paler on face, 

 with a pair of obscure fuscous stripes on summit and more or less flecked 

 with fuscous or ferruginous on upper part of gena; ; summit tumid, the 

 fastigium much broader than long, with slightly raised, parallel lateral 

 margins, the front margin distinctly obtusangulate ; lateral foveoloe obso- 

 lescent, scarcely impressed, subtriangular, longer than broad; frontal 

 costa of moderate breadth, subequal but feebly narrowed above, obsoles- 

 cent below with slightly and narrowly elevated margins ; antennas fer- 

 ruginous, more or less infuscated, in the male as long as the hind femora. 

 Pronotum nearly uniform rufous, more or less infuscated on disk, espe- 

 cially on metazona, not greatly constricted mesially, the metazona feebly 

 tumescent, the hind margin a little obtusangulate, the angle sometimes 

 much rounded, the median carina slight and confined to the metazona. 

 Tegmina broad and well rounded, rufous, minutely sprinkled with fuscous, 

 hardly surpassing the hind femora; wings hyaline, the veins glaucous, 

 sometimes infuscated. Hind femora cinereo-testaceous, often more or less 

 ferruginous, generally very obscurely (but occasionally in male distinctly) 

 bifasciate with fuscous ; hind tibiae light red, pallescent basally. 



Length of body, ^, 14 mm., 9, 19 mm.; antenna?, £, 8 mm., 9. 

 8.75 mm.; tegmina, g, 11.5 mm., 9> 15.5 mm.; hind femora, J, 

 8 mm., 9 ■> 1- mm - 



5^,49. Pueblo, Col., July 8-9, Aug. 30-31. 



This species is very distinct from all the others, not only in the color- 

 ing of the body, tegmina, and hind tibiae, but in the breadth of the fastigium 

 of the vertex, the obscurity of the foveoloe, the absence of a median carina 

 on the prozona, and the lesser obtuseness of the hind margin of the 

 metazona. 



Aulocara femoratum sp. nov. 



Of minor size, the head well rounded and rather prominent, cinereo- 

 testaceous, a little infuscated above; summit tumid, the fastigium deeply 

 excavate, considerably longer thf>n broad, the margins rather sharply 

 elevated, the lateral parallel, the It/ont acutangulate ; lateral foveolae tri- 

 angular, of moderate size, distinctly impressed, but with obsolescent or no 



