76 MEMOIRS ON THE COLEOPTERA 



interlacing wavy scratches, nearly smooth apically; mesosternal 

 process smaller and less obtuse than in the punctata type though 

 evident. Male with the sexual characters of punctata; legs moder- 

 ate, the tarsi rather long. Length (cf) 18.7 mm.; width 10.0 mm. 



Lower California (San Jose del Cabo) lucae Lee. 



9 Body oblong-oval, convex, when mature deep shining black throughout 

 every part of the body and legs, without metallic lustre, the antennae 

 piceous, with the club (cf ) about as long as the stem, or ( 9 ) a little 

 shorter; head about half as wide as the prothorax; punctures of the 

 clypeus extending to middle of the front dense and confluent, the 

 basal parts strongly but sparsely punctate; clypeus narrower than 

 usual, not twice as wide as long, trapezoidal, the apex distinctly 

 reflexed, arcuate and two-fifths as wide as the base, nearly similar 

 in the sexes; eyes slightly prominent; prothorax convex, not quite 

 twice as wide as long, the sides broadly arcuate, widest near the 

 middle, the basal angles not only not at all rounded but sometimes 

 slightly prominent, the bead entire at base, unusually fine at the 

 sides and very widely obsolete at apex; punctures very fine and 

 sparse, becoming closer and intermingled with close opaculate rugu- 

 losity toward the sides; scutellum wider than long, shining, nearly 

 sculptureless; elytra slightly inflated posteriorly and evidently wider 

 than the prothorax, less than a fourth longer than wide, very obtusely 

 rounded at apex, shining and finely, remotely punctate suturad, 

 becoming gradually finely sculptured and alutaceous laterad; 

 pygidium with distinct transversely interlacing scratches throughout, 

 shining; mesosternal process smaller and narrower than in punctata; 

 metasternum smooth medially, toward the sides with the wavy 

 oblique scratches sparser and finer than usual. Male with the sixth 

 ventral short, sinuate medially at tip, the coriaceous seventh segment 

 testaceous; female with the sixth segment sparsely but strongly, 

 linearly sculptured throughout, rounded at apex, sometimes truncate 

 medially, the surface posteriorly not bitumorose as in the punctata 

 type but broadly and slightly convex medially. Length (cf 9 ) 

 16.5-20.0 mm.; width 9.4-11.5 mm. Arizona (Congress Junction 

 and Tugson) lugubris Lee. 



Composita, as defined above, is allied to virescens Burm., but 

 differs in coloration and in its feeble sculpture; it is perhaps closer 

 to the allied aurescens of Bates, but is much narrower and more 

 elongate-cylindric in outline; the head, also, seems to differ in 

 coloration from that of any of the forms allied to virescens described 

 hitherto. Testaceipes is allied to chalcothorax Perty, and perhaps 

 also sordida Germ., but it differs from both of them in the very 

 pallid tarsi. Texensis has shorter legs than usual and notably 

 stout tarsi, but the forms clustering about punctata Linn., are diffi- 

 cult to differentiate in any very positive manner, although I think 

 there are several that must be accorded specific standing. 



