HlSTERID^E 265 



taken at Tucson, Arizona, has since been found by Wickham at 

 Great Salt Lake, Utah. 



*Saprinus oppidanus n. sp. Oblong-oval, convex, black, with the legs 

 piceo-rufous; head without carinae, either lateral or apical, very finely, 

 sparsely punctate and having a small feeble occipital fovea; prothorax 

 very nearly twice as wide as long, the sides broadly rounded, becoming 

 feebly divergent and less arcuate basally, with the marginal groove fine, 

 slightly hooked at base; surface nowhere impressed, impunctate, gradu- 

 ally finely, not densely but distinctly punctate toward the sides, the base 

 with an irregular line of fine sparse punctures; elytra one-half longer 

 than the prothorax, inflated behind the base, strongly, rather closely 

 punctate in fully apical half, impunctate anteriorly, the punctures on 

 the flanks smaller and denser; four discal striae rather coarse, the first 

 extending nearly three-fourths, second but little shorter, the third and 

 fourth subequal and extending slightly behind the middle, the fourth 

 arching at base along the scutellum, the sutural feeble, rather short and 

 tending to become obsolete basally, not extending to the apex; outer 

 subhumeral fine, adjacent to the lateral stria, the inner a short feeble 

 line just behind the middle; pygidia with moderate but deep dense 

 punctures, finer and feebler apically on the pygidium; prosternal surface 

 convex, the striae widely diverging and ending anteriorly in rather large 

 foveae; anterior tibiae finely serrulate. Length 2.4 mm.; width 1.4 mm. 

 Mexico (Guadalupe, Federal District), Wickham. 



This species may be placed near socius Csy., but differs in its 

 black coloration and some other characters. 



Group VII (fimbriatus). 



The prosternum in this group, which is properly a continuation 

 of Group VI, is so compressed between the rapidly diverging striae 

 as to be subcariniform along the median line. The species are 

 moderately numerous and those in my collection belong to three 

 widely different types, represented by fimbriatus, psyche to be 

 described below, having a large rounded and very abruptly limited 

 scutellar mirror, as in fitchi of the next subgenus and the ccerules- 

 cens, vestitus and intritus section, having the upper surface punctured 

 and subopaque throughout. I have not seen neglectus and rubri- 

 culus, said by Horn to have glabrous thoracic margins; in all the 

 other sections mentioned the prothorax is fimbriate at the sides, 

 at least to some extent. The species in the fimbriatus section 

 frequently become very closely allied among themselves. There 

 is, for instance, extremely little difference between lubricus and 

 plenus of LeConte, and, in my opinion, plenus should be considered 



