American Caraboidea 141 



to five combined; dorsal fovea single, onl}' moderate in size and at three- 

 sevenths; two apical foveoles rather widely spaced. Length 4.4 mm.; 

 width 1.45 mm. California (Lake Tahoe). A single example, taken by 

 the writer. 



Distinguishable from evanescens Csy., by the elytral punctures 

 only slightly and very gradually smaller from base to apex; in 

 the latter species the punctures become rather coarse and strong 

 rapidly in about basal third or slightly more, and the coarser and 

 more perforate dorsal fovea is at two-sevenths; the apical foveoles 

 are smaller and feebler. 



Notiophilus coloradensis n. sp. — Form and size nearly as in the 

 preceding, polished and black throughout, the upper surface obscure 

 seneo-cupreous; legs black, the tibiae feebly rufescent; head slightly 

 wider than the prothorax, with the usual very large and prominent eyes; 

 frontal intermediate striae five, long, deep and very regular; antennae 

 blackish, with silvery hairs, the first four joints pale; prothorax ^three- 

 fourths wider than long, widest near apical third, with evenly rounded 

 sides, becoming gradually less arcuate and only moderately converging 

 behind and deeply sinuate and then parallel at base, the angles very 

 sharp and even somewhat prominent laterally; surface nearly as in the 

 preceding, except that the basal foveae are short and deeply linear; 

 there is also a small feeble impression in prolongation thereof near the 

 middle; median prolongation of the apex longer and less obtuse than in 

 sierranus or evanescens; elytra oblong-oval, convex, three-fourths longer 

 than wide, distinctly wider than the prothorax, the parallel sides evenly 

 arcuate; striae evidently impressed, rather coarse, coarsely, deeply and 

 closely punctate, the punctures gradually becoming fine and more distant 

 posteriorly, disappearing near the apex; punctures of the eighth stria 

 becoming subobsolete only for a short distance before the exarate apical 

 part; second interspace equal in width to three and four combined; two 

 apical foveoles very small, rather indistinct; dorsal fovea large, deep, 

 barely at all before the middle, that of the right elytron wanting in the 

 type. Length 4.35 mm.; width 1.4 mm. Colorado (Boulder Co.), — 

 Mrs. T. L. Casey. 



Also allied to evanescens and simulator but distinguished by the 

 deeply sinuate sides of the prothorax at base, coarse strial punctures 

 and submedial position of the dorsal fovea. I overlooked the type 

 of this species in describing evanescens; it is a very different thing. 



As the existence of several distinct species of the simulator type 

 is thus proved conclusively, I now doubt that evanescens is really 

 the same as simulator, as announced by me some time'ago, the type 

 locality of the latter being assumably Mullan, Montana; evan- 

 escens — 4.2-4.5 mm., is a little smaller than simulator — 4.4-4.65 



