V0 1889."'J PROCEEDINGS OF THE NATIONAL MUSEUM. 79 



the sides nearly parallel, rounded above ; posterior lobe rapidly ex- 

 panding, the disk nearly flat, coarsely granulate ; median carina almost 

 obsolete ; posterior edge forming a rather obtuse angle with the apex 

 cut oft'. Tegmiua and wings extending about one-third ( £ ) or only one- 

 fifth of their length beyond the tip of the abdomen ( 9 ). Posterior 

 •femora rather heavy, just reaching 9 , or slightly surpassing the tip of 

 the abdomen $ ; posterior tibia? with the spines few, long, and stout. 



General color ciuereo-testaceous, profusely mottled with dull rust 

 brown and black, darkest above. The face and sides of pronotum and 

 body thinly covered by a whitish, mealy powder or pruinescens. Teg- 

 miua irregularly mottled with numerous quadrate brown spots which 

 arrange themselves in rows along the dorsal edges; wings pellucid on 

 the basal third, beyond this hyaline inclining to pale fuliginous api- 

 cally, the veins and cross-veins of the outer two-thirds for the most 

 part dusky. Posterior femora marked externally in the middle with a 

 faint and preapically with a nearly black fascia; tibiae inclining to 

 light blue-gray along the bases of the spines which latter are black 

 tipped; anterior and middle legs mottled, the mottliugs congregating 

 into obscure bands. Antenna? testaceous, a little infuscated apieally, 

 in some specimens annulate. 



Length of body, $ , 15 1 " 1 ", 9 , 27 mni ; of anteume, $ , 6 mm , 9 , 8.2""" ; 

 of pronotum, $, S mm , 9, 5.15"""; of tegmiua, S, 17""", 9,25"""; of 

 hind femora, $ , 9""", 9 , 14.5"'"' ; of hind tibia?, $ , S.i""", 9 , 12""" ; 

 greatest width of thorax, $ , 4.S5 11 "", 9 , 8 mm . 



Hab. — Arid slopes back of Albuquerque, N. Mex., in May (H. Bru- 

 ner). 



Thrincus(?) maculatus sp. nov. 



The female quite large and robust; grayish, heavily mottled with 

 dark brown or dull black; posterior femora with lower sulcus on inner 

 face deep purple-red ; tibia? with inner edge also of same color. 



Vertex between the eyes moderately wide, shallowly sulcate, with a 

 rather prominent median longitudinal carina that extends from the apex 

 across occiput to front edge of pronotum ; there is also a more or less 

 distinct transverse ridge just about the middle that divides the sulcus 

 into four nearly equal subquadrate fields, the two posterior ones with 

 their surface smooth and well defined, the anterior two, rough and dim 

 in outline ; lateral foveala? obsolete, and their place occupied by a raised 

 triangular field, in the center of which are situated the large lateral 

 ocelli; frontal costa quite broad above, a little contracted just above 

 the antenna?, and terminating immediately below the ocellus, at which 

 it is a trifle depressed ; lateral facial carina? tortuous, rather dim; eyes 

 large and prominent, reniform, fully as long as that portion of the cheeks 

 just beneath; antenna? filiform, nearly as long as the head and prono- 

 tum combined. Pronotum widening posteriorly, rugose tuberculate, 

 the disk nearly flat ; the three transverse impressed lines nearly equally 

 plain, continuous, the last a little in advance of the middle; anterior 



