190 PROCEEDINGS OF THE ACADEMY OF [Feb., 



space between the eyes slightly greater than that between the oceUi; 

 vertex with a distinct transverse ridge which divides the apical from 

 the inferior surface of the head ; antennae slender, filiform, shorter than 

 the body. Pronotum sub-triangular; surface velvetinous and some- 

 times haired; the posterior margin broadly arcuate, the anterior 

 semicircular; both margins closely haired, those of the anterior margin 

 much longer than on the posterior; lateral angles obtuse, inconspicu- 

 ous. Tegmina with the surface glabrous, the distal half membrana- 

 ceous; apex sub-acuminate, rounded; anterior (lateral) margin basally 

 supplied with long hairs ; marginal field with the nervures absent in the 

 proximal portion; discoidal field with the nervures obliquely parallel, 

 almost longitudinal; anal field with the nervures distinctly visible 

 and strongly arcuate. Tarsi with seven apical spurs. Sub-genital 

 plate with the apex broadly emarginate, the lateral shoulders pro- 

 duced into distinct dentiform processes, the intervening diastema 

 being of moderate depth and evenly rounded. Cerci flattened, very 

 short. 



General color wood-brown. Head blackish; ocelli aml^er-yellow. 

 Pronotum with the anterior and lateral margins pale yellowish, the 

 hair, which is present on the margins and sometimes on the disk, being 

 of the same tint; disk blackish with two large lateral and one small 

 medio-posterior dot of red, which are more or less conspicuous. Teg- 

 mina with the general tint strongest on the nervures of the proximal 

 half of the tegmina. Under surface yellowish-brown, suffused with 

 darker brown in the anal region. 



Length of body 9.5 mm.; length of tegmina 14 mm.; greatest width 

 of tegmipa 5 mm. ; length of pronotum .3-3.5 mm. ; width of pronotum 

 4.2-4.5 mm. 



9 . Unknown.^ 



Larva: Form ovate, the abdomen very broad. Pronotum similar 

 to that of the male in general outline. Supra-anal plate transverse, 

 the posterior margin rounded and centrally emarginate. General 

 color wood-brown, edged on the pro- and mesonotum wdth ochraceous. 

 Pro-, meso- and metanotum centrally ornamented with blotches of 

 ochraceous, the penultimate abdominal segment bearing lateral 

 blotches of the same tint. 



Distribution. — This species has been recorded only from the Rio 

 Grande Valley at Las Cruces, N. M., and the San Augustine Plain 



* The specimen described by the author (Proc. Acad. Nat. Set. Phila., LIV 

 (1902), p. 717) as a female is in a larval condition and the sex is uncertain. 



