American Caraboidea 155 



The following belongs to the tcedatus section but is very different 

 in sculpture and sexual characters: 



Carabus stocktonensis n. sp. — Male narrow and very elongate, black 

 or slightly brownish, rather shining; head nearly as in tcedatus but 

 sparsely punctured basally and with greater extent of rugosity and 

 also more punctured toward the eyes; labrum similar; mandibles short, 

 arcuate, smooth; antennae similar; prothorax similar, the sides a little 

 more sinuate basally, broadly and less abruptly reflexed toward base; 

 surface more finely and closely punctate, more rapidly declivous at the 

 sides; scutellum smaller; elytra narrower and more elongate, four- 

 fifths longer than wide, one-half wider than the prothorax; humeri 

 more narrowly rounded at base; surface with fine close-set cariniform 

 lines, the summits of which are finely asperulate, the intervals not 

 definitely punctulate as they are in tcsdatus; fovese very shallow, not 

 metallic; anterior tarsi moderately dilated, densely spongiose beneath 

 the first four joints. Female larger and stouter than the male, similar 

 in general outline and in the sculpture and configuration of the anterior 

 parts, but with somewhat different arrangement of the fine asperulate 

 sculpture of the elytra, the regular close-set lines not being apparent, 

 except laterally, the minute elevations very close-set and genera.lly 

 confused in arrangement. Length {(f 9) 19.5-22.0 mm.; width 7.7- 

 9.2 mm. Utah (Eureka and Stockton), — Spalding. 



This species differs greatly from tcedatus in having the first four 

 joints of the anterior male tarsi spongiose beneath; in tcedatus 

 only the first three joints are so clothed, and in that species the 

 elytra have close-set regular smooth lines, with distinctly though 

 irregularly punctate intervals; the general form of the body is 

 much less elongate than in the present species and the size is smaller. 



Of chamissonis Fisch., I have a series of between twenty and thirty 

 specimens from St. Paul Island; it is a small species, with short 

 prothorax, and brachyderiis Wiedem., is a true synonym. The 

 form named grcenlandicus by Dejean, of which I have four examples 

 from St. Modest, Labrador, is however different from chamissonis 

 and is without doubt specifically valid; it is much larger in size, 

 the prothorax less abbreviated and more sparsely and finely sculp- 

 tured, and the hind angles project further posteriorly. The fol- 

 lowing is related closely to grcenlandicus but is a little smaller, 

 distinctly narrower and with more evenly rounded sides of the 

 prothorax. 



Carabus grcEnlandicus ssp. washingtoni nov. — Narrower and a little 

 smaller than grcenlandicus and also more convex, deep and rather less 

 shining black; head slightly more than half as wide as the prothorax. 



