230 THE CANADIAN ENTOMOLOGIST. 



and aJJiUata, while the elytra are much longer than in those species, and 

 more coarsely punctured than in any other species with elytra attenuate. 

 The elytra are feebly depressed at apical one-third, the apices being not 

 perceptibly tumid, the depressed third of elytra is in certain lights of a 

 brilliant cobalt-blue tinge. 



Hydnocera fallax^ n, sp. — Robust, not strongly convex, black, with 

 greenish reflexions, feebly shining, elytra blue-black, a narrow longitudinal 

 maculation at base midway between the scutellum and the humeri 

 extending more than one-third the length of elytra, antennae, anterior and 

 middle legs and basal half of hind femora yellowish-testaceous, front tibiae 

 with outer margin piceous, hind tibiae obscurely testaceous on outer 

 margin, apical half of middle femora and tibiae slightly infuscate. Pubes- 

 cence rather sparse, moderately long, grayish and semierect, most 

 conspicuous on head, thorax and posterior half of elytra. Head with 

 large prominent eyes, one-fourth wider than thorax, front feebly and 

 vaguely impressed, densely, finely rugosely punctate. Thorax equally as 

 broad as long, apical constriction strong, sides moderately dilated, behind 

 the dilatation strongly compressed, sides thence to base slightly divergent, 

 apical transverse impressed line obsolete, subbasal impressed line short, 

 ending each side in a feeble fovea, basal margin reflexed, lateral foveae 

 obsolete, densely, finely rugosely punctate, middle of disk rather more 

 sparsely. Elytra slightly shorter than the abdomen, sides nearly straight, 

 convergent from base to apices, apices obliquely rounded, narrowly 

 dehiscent at suture, sides behind the middle and apices strongly serrate, 

 punctuation moderately coarse, rather sparse and mostly well separated 

 except at apical third, where they become dense and slightly rugulose, 

 colour blue-black, each with a narrow yellowish-testaceous longitudinal 

 stripe broader posteriorly, extending fromi the base midway between the 

 humeri and the scutellum to basal third, inner margin of stripe parallel 

 with suture, posteriorly dilated to twice the width at base. Length, 

 3.5 mm. 



Colorado Springs, Colorado, 6,000-7,000 feet. H. F. Wickham. 



This species might at first sight readily be taken for Jiumeralis. It 

 is, however, quite distinct, the thorax being longer, the elytral flanks 

 strongly convergent toward the apices, and the form is more robust, finally 

 the colour markings are of a different type. 



The posterior femora extend slightly beyond the apex of elytra, but are 

 shorter than the abdomen.; the legs are sparsely clothed with long hairs. 



