338 MEMOIRS ON THE COLEOPTERA 



dense, less fine basally than apically, the apices broadly, evenly rounded; 

 two fine lines on each unusually distinct to the apical declivity; abdomen 

 black, gradually rufous behind, finely, very densely punctured and with 

 long dense pale hairs. Length (cf) 13.0 mm.; width 4.4 mm. Utah 

 (Marysvale), Wickham. 



Distinguishable by the very dense elytral sculpture, denser and 

 much less coarse than in any other species. It is dedicated to 

 Prof. H. F. Wickham in recognition of many interesting discoveries. 



Crossidius truncatellus n. sp. Still shorter in form than the preceding, 

 similar in coloration, the pale vestiture less dense; antennae (cf ) longer 

 and more slender, almost a third longer than the body; prothorax less 

 transverse, barely one-half wider than long, the sides parallel and evenly 

 rounded, not evidently tuberculate, coarsely but not so densely punctate, 

 the punctures nearly isolated; elytra not quite twice as long as wide, 

 dehiscent at apex, the apices rectilinearly truncate, the outer angle obtuse; 

 punctures irregular,' everywhere dense and differing but little antero- 

 posteriorly but coarser than in wickhami throughout, the black sutural 

 area similar but more extended; abdomen bright red, black only at the 

 extreme base. Length (cf ) 11.5 mm.; width 4.0 mm. Utah (Marys- 

 vale), Wickham. 



Differs from wickhami in its shorter form, less transverse and 

 non-tuberculate prothorax, longer and more slender antennae, 

 truncate elytral apices and redder abdomen. 



Allied to pulchellus Lee., there are many forms differing in special 

 characters, but the general mutual resemblance is so striking that I 

 will designate them all subspecies of pulchellus for the present; 

 their peculiarities can best be compared in the form of a table as 

 follows : 



Body parallel, black, the abdomen rufous at apex, the elytra tawny 

 yellow, black at the basal margin, the black area posteriorly ex- 

 tended slightly at the humeri, also with a large common parallel- 

 sided black area, not extending to the sides, broadly involving the 

 apices, extending to basal third, where it is abruptly and angularly 

 contracted, the median part extending anteriorly along the suture 

 for a short distance in an acute triangle; thoracic punctures very 

 coarse, not crowded, having moderate cinereous hairs; antenna a 

 little longer than the body (cf ) or three-fourths as long as the latter 

 (9); female smaller than the male but similarly maculate. 



pulchellus Lee. 



A Similar in form and size to pulchellus and similarly maculate, except 

 that the anteriorly projecting angle of the black area extends 

 narrowly along the suture to the base and that the posterior part 

 retreats slightly from the lateral edge to the apex, this oblique 

 part deeply sinuate; it also differs in having the median line of 

 the pronotum tumid and impunctate for a short distance behind 



