THE CANADIAN ENTOMOLOGIST. 233 



being in the sculi)ture and f()rm of the elytra, the sides being convergent 

 in tills species, while in Wickhanii they are parallel. It also differs from 

 Wickhami in having the long, erect, black hairs of the upper surface 

 wanting, the colour is different, and there is no trace of elytral colour 

 markings in that species. 



Hydnocera ornata, w. sp. — General form of longicoUis. Black, 

 shining ; elytra* each with a large basal maculation extending to the 

 middle, attaining the lateral margins at base but rapidly narrowing 

 posteriorly, narrowly interrupted at the suture, and with an obscurely 

 clouded area near scutellum, a large somewhat irregular longitudinal 

 maculation on lateral margin at apical third pale yellow. Pubescence 

 rather sparse, long, semierect, white, front of head densely clothed with 

 fine recumbent silvery white hairs. i\ntennae and mouth pale yellow; eyes 

 large, prominent, head very large, shining, coarsely, very sparsely and 

 irregularly punctate, finely rugose above the eyes. Prothorax brightly 

 shining, much narrower than the head, more than one-fourth longer than 

 broad, nearly cylindrical, sides before the middle very feebly obtusely 

 rounded, apical constriction moderate, sides parallel behind, lateral fovese 

 small, distinct, disc coarsely, very sparsely and vaguely punctate, sculpture 

 somewhat rugulose at the sides. Elytra at base slightly wider than the 

 head, humeri rather feeble, strongly attenuate, fully one-third shorter than 

 the abdomen, dehiscent at suture, apices rounded and strongly serrate, 

 tumid at apex, punctuation fine, nearly obsolete at base, more distinct but 

 sparse at middle, the individual punctures well separated except on the 

 tumefied portion, where they are very sparse and irregularly placed, some 

 being confluent. Legs pale yellowish, clothed with long sparse white 

 hairs. Length, 4.5 mm. 



Santa Rita Mts., Arizona, 5,000-8,000 feet. Dr. F. H. Snow. 



Closely allied to H. Guatemalce, Gork., described from Guatemala, 

 but that species has the elytral apices truncate, the pubescence sh6rt and 

 depressed, and to judge by the figure (Biologia, III, 2, Tab. 9, fig. 3), has 

 the elytra somewhat longer, prothorax shorter and broader, less cylindrical, 

 and with apical and basal margins narrowly yellowish-white. Ornata 

 differs from longicollis by the shorter thorax, sculpture of the upper surface 

 and the colour pattern. The metasternal side pieces are densely clothed 

 with short recumbent white pubescence. The posterior femora scarcely 

 extend to apex of abdomen. 



