Baring 381 



ventral with small and sparse lineiform scales, the ligula minute and 

 feeble. Length (cf) 4.3 mm.; width 1.9 mm. Utah (St. George), — 

 Wickham. 



The very close covering of rather broad gray lineiform scales, 

 oblique, and intermatted at the sides of the strial intervals, as 

 well as peculiarities of abdominal vestiture, as related above, will 

 serve to distinguish this species in the compacta section of the genus. 



The following is the largest of the compacta series and has the 

 scales of the male abdominal impression nearly as large as those at 

 the sides, though distinctly separated : 



Trichobaris densata n. sp. — Oblong, rather convex, black, the scales 

 of the upper surface closely decumbent, ochreous and so broad as to 

 approach the oval in form, dense as possible without being in mutual 

 contact, the striaj indicated by feeble obliquity of the scales at the sides 

 of the intervals; two basal thoracic spots more developed than in others 

 of the compacta section; scales of the under surface and femora large, 

 oval, very dense and yellowish-white in color; beak very thick, slightly 

 arcuate and densely squamose, differing but little sexually, barely as long 

 as the prothorax in the female, angularly gibbous above at base; pro- 

 thorax less transverse than in the others, barely a fifth wider than long, 

 nearly similar in outline, the sinuation of the sides near the middle rather 

 more distinct; dense coarse sculpture concealed by the vestiture; elytra 

 longer than in any other of the compacta section, three-fifths longer than 

 wide, the parallel sides more gradually rounding behind from near the 

 middle, barely a fourth wider than the prothorax and between two and 

 three times as long; humeri barely inflated. Length (cf 9) 5.0-5.8 

 mm.; width 2.2-2.45 mm. California (San Diego). Four examples. 



To be identified by the short and very thick beak, dense vestiture, 

 longer, more gradually rounded and less apically obtuse elytra and 

 more developed basal spots of the pronotum, among other char- 

 acters. 



The Mexican soror of Champion, is well represented in my col- 

 lection by three examples taken by Wickham near Durango City. 

 It is a stout species, clothed very closely above with broad lineiform 

 ochreous-brown scales, the striae being indicated by feeble obliquity 

 of the adjacent scales, the two basal thoracic spots well developed. 

 The whitish scales of the under surface are large, oval and dense, 

 and, in the feeble abdominal impression of the male, become only 

 narrowly separated and a little less broad; the polished subapical 

 area is not continuous, both the third and fourth segments having 

 plentiful scales except basally, and the fifth segment is faintly and 



