H. C. FALL 443 



Elytra with confused punctures baso-suturally, striae elsewhere more or less 

 clearly marked, feebly impressed, four and five confused in front of the middle, 

 eight a little more impressed, marginal interspace not punctate; shield small. 

 The maculation is variable, the standard spots defined in the typical form, 

 except that the middle inner spot is confluent with the posterior one and more 

 or less so with the corresponding outer one. In the darker forms the spots are 

 broadly suffused, leaving the elytra black, with basal edge, post-humeral lateral 

 spot, apex and some smaller dots in the sutural region, yellow; in these darker 

 individuals the shield is not defined. All else nearly as in laevis. 



Length 2.75 to 3.35 mm; width 1.4 to 1.8 mm. 



Distribution. — N'ew Mexico: Beulah, Julj^ (type cf ); Cloudcroft 9,000 feet 

 June 9-14, also August (Knaus) ; S. Fork Eagle Creek, 8,000 feet, WTiite Moun- 

 tains, Aug. 18 (Townsend); Socorro Co., Aug.; Magdalena Mountains, Aug.; near 

 Las Vegas Hot Springs, 7,000 feet, Aug. (all from Snow Coll.) ; Beulah (Beyer), 

 July 24 (Cockerell). Colorado: Colorado Springs, 6,000 to 7,000 feet, June 

 (Wickham); Garland, June 18 to 25 (Hubbard & Schwarz); Caiion City, May 

 14 (Soltau— Nat. Mus. Coll.). 



123. Pachybrachys laevis Bowditch 



Small, yellow, standard spots variable from black or nearly' so 

 through pale brown, diffuse and indistinct to entirely wanting; 

 integuments polished, shield large, elongate, nearly or quite one- 

 third the length of the elj^tra; eyes (cf) separated bj'' scarcely 

 twice, and in the female by somewhat more than twice the length 

 of the basal joint of the antennae; front without ocular lines; 

 front claws of male not appreciably enlarged. Ave. length 2.5 

 mm. Texas, Colorado and New Mexico to California (?). 



Head slightly wider than the thoracic apex, rather sparsely punctured, vertex 

 spot broad, black, median spot linear to narrowly triangular, front predomi- 

 nantly yellow as a rule. Eyes in male distinctly more widely separated than 

 the vertical width of their upper lobes. Antennae blackish except basally, 

 fully three-fourths as long as the body in the male, not much more than half 

 as long as the body in the female, the tenth joint about two and one-half times 

 as long as wide in both sexes. 



Prothorax moderately strongly transverse, sides slightly convergent and 

 nearly straight from the base or very near it, punctuation moderately coarse, 

 not close, a little uneven in distribution, side margins smooth, M variable from 

 rather broad and complete to faint and fragmentary, often with the three basal 

 spots only well defined. 



Elytral striae fairly regular, a littk> impressed, four and five often somewhat 

 broken and confused at middl(\ eighth only feebly sinuous, marginal interspace 

 impunctate; standard spots fairly distinct, the middle one of the inner series 

 often confluent more or less with the correspontling outer spot and with the 

 posterior inner one; shield large, elongate, feebly convex, yellow. 



TR.\NS. AM. ENT. SOC, XLI. 



