36 MEMOIRS ON THE COLEOPTERA 



slender; prothorax similar and dark steel-blue but with more numerous 

 punctures anteriorly, basally and toward the median stria; elytra differing 

 greatly in form; being parallel, with just visibly arcuate sides and only 

 about one-half longer than wide, deep steel-blue, striate and punctured 

 as in leucoscelis but with the interstitial punctures finer; broadly rounded 

 reflexed edge at the humeri, the under surface and legs nearly similar. 

 Length (cf 9 ) 12.0 mm.; width 4.9-5.0 mm. Arizona (Yuma). A 

 single pair taken by the writer. 



In leucoscelis the elytra are much longer and are gradually slightly 

 inflated posteriorly, being widest behind the middle and with 

 notably arcuate sides; in fact the habitus of the two species is very 

 different. From a personal study of the type in the LeConte 

 collection, the form described as monachus by LeConte, proves to 

 be exactly the same as leucoscelis and does not approach gilensis in 

 the characters described above. 



Chlaenius sanantonialis n. sp. Somewhat similar to cordicollis but 

 smaller and more abbreviated, dark steel-blue in color throughout above, 

 the under surface black; legs and antennae testaceous; head and antennae 

 nearly as in cordicollis, the prothorax also similar but much shorter, 

 distinctly wider than long; elytra shorter and rather broader, with simil- 

 arly rounded humeral edge and widest slightly behind the middle, the 

 striae coarser, more impressed and with coarser and more conspicuous 

 punctures; intervals not so broad, feebly convex and with the fine 

 punctures less close-set; under surface and sexual characters nearly 

 similar. Length (cf) 13.5-14.0 mm.; width 5.2-5.7 mm. Texas. Two 

 male examples, without more accurate indication of locality. 



Distinguishable from cordicollis by its more abbreviated form, 

 shorter and relatively broader elytra, with much coarser, more 

 impressed and more coarsely punctate striae and convex, less punc- 

 tate intervals. 



Chlaenius sierricola n. sp. Moderately elongate, rather depressed 

 on the upper surface, shining and dark blue above, the elytra rather 

 more obscure and opaculate; under surface black and shining, the legs 

 and antennae pale testaceous; head not longer than wide, smooth cen- 

 trally, rugulose and punctate toward the eyes and basally; antenna? and 

 palpi rather long and slender; prothorax two-fifths wider than the head 

 and a third wider than long, the sides broadly rounded, slightly converg- 

 ing and distinctly sinuate basally, the base slightly wider than the apex; 

 surface strongly, rather closely punctate, less closely and rather more 

 irregularly so before about the middle; elytra three-fourths wider than 

 the prothorax, rather more than one-half longer than wide, parallel and 

 broadly arcuate at the sides, the basal and lateral beading forming a 

 sharp angle; striae very fine, feebly impressed, minutely punctulate, the 

 intervals nearly flat, rather closely punctate, the punctures much larger 



