90 AMERICAN COLEOPTERA. 



widest at middle, sides moderately strongly rounded anteriorly, con- 

 vergent and feebly sinuate posteriorly, the hind angles prolonged over 

 the elytra ; apical margin very broadly posteriorly arcuate between the 

 reflexed sides, disk broadly convex and impunctate, median line fine 

 in front, deeper behind, side margins moderately reflexed in front, 

 more widely so behind. Elytra § wider than prothorax and nearly 

 three times as long, \ longer than wide, lateral margin reflexed ante- 

 riorly, more strongly so around the humeri, disk flattened, 14 or 15 

 striate, the striae moderately impressed, rather finely punctate, some- 

 what irregular or confused laterally. Inflexed portion of the elytra 

 sparsely, finely, obsoletely punctate ; abdomen impunctate. Length, 

 16.5 mm. ; width, 6 mm. 



Chiricahua Mountains, Arizona. A single male specimen 

 collected and given me by my friend Mr. V. W. Owen of 

 Los Angeles. 



In all essential characters this species is nearly related 

 to van dykei. The color is at first glance entirely black, but 

 in certain lights the elytra show the faintest imaginable 

 hint of a dark purplish reflection. The front tarsi are, as in 

 van dykei, strongly dilated, the first joint triangular and a 

 bit longer than wide, the second quadrate, and the third 

 smaller and evidently transverse. The two species are quite 

 different in their minor characters, van dykei being a dis- 

 tinctly less elongate species and more prettily colored, the 

 thorax rather closely punctate and with side margins more 

 widely reflexed, the elytral striae finer but more coarsely 

 punctured, and the reflexed portion of the elytra and sides of 

 the ventral segments numerously punctate. 



CALOSOMA Web. 



C. parvicollis n. sp. 



Deep black throughout, without metallic lustre except very faintly in 

 the concave elytral margins ; head and prothorax somewhat shining, 

 elytra duller. Head fully § as wide as the prothorax, rather finely and 

 moderately closely punctate between the eyes, beooming nearly smooth 

 in front; epistomal impressions rather deep. Prothorax from a little 

 less than to fully § wider than long, sides rather sharply angulate at 

 middle, arcuate in front, straight behind, a little sinuate just before 

 the hind angles ; base also distinctly sinuate near the angles, making 

 the latter evidently acute ; base narrower than the apex ; disk finely 

 punctate, becoming more distinctly so near the margins, finely rugous 

 posteriorly ; basal impressions moderate. Elytra f longer than wide, 



