ClCINDELID.'E AND CARABID^ 63 



Calosoma subgracilis n. sp. Narrow, convex, alutaceous, the elytra 

 highly polished, deep black throughout; head as in peregrinator and car- 

 bonata but smaller, the antennae much more slender; prothorax as in the 

 latter but smaller and less transverse, scarcely more than three-fourths 

 wider than long; elytra parallel, more elongate, more than two-thirds 

 longer than wide, the punctures throughout extremely small, similar 

 throughout the length, the foveae minute and scarcely discoverable, 

 the transverse rugulae obsolete, except a few vestiges very near the humeri; 

 legs slender; hind tarsi very slender, scarcely more than three-fourths 

 as long as the tibiae. Length 20.5 mm.; width 8.4 mm. Locality un- 

 recorded in the Levette collection. 



The single male type represents a close ally of carbonata, but 

 the very much more slender form, small size, smaller head and pro- 

 thorax, more glossy elytra and more slender antennae and legs would 

 seem to be specific. 



Calosoma apacheana n. sp. Form somewhat as in carbonata though 

 smaller and narrower, with relatively larger head and prothorax, the 

 lustre less shining, the sculpture stronger; head nearly similar but with 

 more elongate lateral furrows, evidently more than half as wide as the 

 prothorax; antennae slender, not quite one-half as long as the body; 

 prothorax very nearly twice as wide as long and three-fourths as wide 

 as the elytra, the outline and sculpture as in carbonata, except that each 

 of the postero-lateral impressions in the type is divided completely by an 

 oblique transverse ridge near basal third; elytra oblong, parallel, together 

 obtusely subangulate at apex, having regular unimpressed series of 

 punctures as in carbonata, except that the punctures are strong and con- 

 spicuous throughout the length, becoming fine only at the apex excepting 

 in the sutural series, where they are strong to the tip; foveae moderately 

 distinct, the extero-basal rugulae strong; anterior tarsi (cf ) moderately 

 broadly dilated. Length 24.0 mm.; width 9.7 mm. Arizona. 



The division of the basal impressions of the pronotum, announced 

 above, is exactly symmetric bilaterally, but it is nevertheless adven- 

 titious, in all probability, in the single male type; the species is 

 distinct, however, by reason of the relatively broader anterior parts, 

 stronger elytral punctures and smaller size. The anterior male tarsi 

 are not quite so strongly dilated as in carbonata. 



Calosoma hospes n. sp. Small in size, stout, convex, shining, black 

 throughout; head small, finely, not densely punctate and rugulose, three- 

 fifths as wide as the prothorax, the antero-lateral impressions short; 

 antennae (c?) nearly half as long as the body; prothorax transverse, 

 fully three-fourths wider than long, just visibly more than half as wide 

 as the elytra, rounded at the sides, the latter slightly more convergent 

 and straighter in basal two-fifths, sometimes feebly angulate at that 

 point; surface very shining, finely, sparsely punctate and feebly rugulose, 



