American Caraboidea 221 



wider than the prothorax, oblong, with distinctly arcuate sides, gradually 

 but more rapidly rounding apically; stride fine, nearly smooth; intervals 

 very nearly flat, the third with three punctures placed as in the preceding; 

 anterior male tarsi with the first three joints distinctly dilated and sub- 

 equal in length; hind tarsi very slender. Length (cT') 7.0 mm.; width 

 2.75 mm. Colorado (Ouray, 7500 ft. elev.), — Wickham. 



Quite distinct from either calaior, coloradensis or reductus, all of 

 which are also inhabitants of Colorado, in its much more abbrevi- 

 ated form; reductus has the prothorax narrower and more elongate 

 than in either of the others mentioned. 



Pristodactyla Dej. 

 The following species is allied to zuniana, but differs in its smaller 

 anterior parts, the head especially being much smaller, relatively 

 wider elytra, more slender maxillary palpi, smaller mandibles, less 

 equally and more anteriorly rounded sides of the prothorax and 

 in a consequently pronounced difference of facies: 



Pristodactyla neomexicana n. sp. — Deep black and rather shining, the 

 elytra opaque; surface distinctly convex; legs piceous; head three- 

 fifths as wide as the prothorax and very distinctly narrower than an 

 elytron, with moderately prominent eyes; palpi pale testaceous, the 

 last joint a little longer than the third, narrowly truncate at tip; an- 

 tennae ferruginous, the four basal joints more piceous, not quite half as 

 long as the body; prothorax widest near apical third, slightly wider than 

 long, the sides rather strongly rounded, oblique and feebly arcuate in 

 fully basal half; apex sinuate, with well rounded angles, the basal angles 

 still more broadly rounded; posterior transverse impression feeble, the 

 anterior obsolete; stria deep, abbreviated a little at apex, attaining 

 the base; fovea? linear, feebly impressed, smooth; sides very moderately 

 reflexed, scarcely differing basally; elytra two-thirds longer than wide, 

 almost one-half wider than the prothorax, obtusely ogival at apex, the 

 parallel sides broadly, evenly arcuate; striae fine, feebly impressed, 

 finely punctulate; intervals almost flat; dorsal punctures three, the 

 first at basal third; met-episterna slightly elongate; first three joints of 

 the anterior male tarsi strongly dilated. Length (c/') 10.5-11.0 mm.; 

 width 4.1-4.3 mm. New Mexico. One example from an unrecorded 

 source and two from Cloudcroft, the latter sent by Knaus. 



In both this species and zuniana the tarsal claws are virtually 

 smooth beneath, without trace of fimbriolation, but, under high 

 power, there are visible basally about three very feeble serruliform 

 crenules. The type of this species was considered with the larger 

 type of zuniana in my previous work on the genus (Mem. Col., 

 IV, p. 160) but it evidently represents a distinct species. 



