76 MEMOIRS ON THE COLEOPTERA 



Group IV (amputatus}. 

 Subgenus Harpalomerus nov. 



Another very isolated type seems to require subgeneric desig- 

 nation as above. The body is oblong and subparallel and the upper 

 surface is generally pervaded by metallic blue or green gloss as in 

 the preceding group, though always of a darker shade when present; 

 but it is chiefly distinguished by the form of the elytral apices, 

 which are transversely truncate, with prominent sutural angle in 

 the female though obliquely subsinuate in the male. The single 

 discal puncture is apparently constant and I have noted only one 

 example where there is a gemination of the epistomal punctures and 

 this only on one side. There are three forms in my collection, 

 which are probably specific in nature as follows : 



Upper surface with dark blue to greenish metallic lustre 2 



Upper surface without trace of metallic lustre 3 



2 Body parallel, moderately stout and convex, polished, black when 

 mature, a little less deep beneath, the legs obscure rufous, the femora 

 generally black, the upper surface with deep violet-blue to green 

 metallic lustre on the elytra, barely observable however on the head 

 and prothorax, the elytra alutaceous in the female; head moderate, 

 three-fifths as wide as the prothorax, smooth, with prominent eyes, 

 the antennae extending slightly beyond the thoracic base; prothorax 

 one-half (cf) to three-fifths (9) wider than long, parallel, almost 

 evenly rounded at the sides, the basal angles broadly rounded and 

 obliterated, the base margined, -transverse, about as wide as the 

 sinuate apex, the anterior angles very broadly rounded; surface 

 very steeply, rather abruptly declivous at the sides to the narrow 

 reflexed edge, which broadens and shallows slightly behind, the 

 foveae large, rather deeply impressed and strongly punctate, the 

 punctures also often but not always scattered thence over the 

 convex surface separating the foveae from the sides; median stria 

 very fine; elytra about one-half longer than wide, very slightly 

 wider than the prothorax, parallel, the striae rather strong and deep, 

 the scutellar long, not or but very seldom joining the first; apical 

 truncature ( 9 ) transverse, straight, gradually becoming posteriorly 

 prominent toward the dentiform sutural angles, or (cf) oblique 

 and obsoletely sinuate and without dentiform sutural angles; 

 abdomen with sparse punctulation, somewhat as in the preceding 

 group but less extended; hind tarsi with the first three joints rather 

 slowly decreasing, the fourth more abruptly shorter, the first much 

 shorter than the fifth. Length (cf 9 ) 9.5-11.0 mm.; width 3.3-4.1 

 mm. New Mexico, Arizona, Colorado and Utah. Forty examples. 



amputatus Say 



Body parallel, very much broader than in the preceding, the metallic 

 coloration confined to the elytra, deep violaceous-black (cf ), almost 



