AMERICAN COMPONENTS OF THE TENTYRIIN^ 299 



Form elongate, parallel, shining, piceous-black, the legs and antennae 

 rufous ; head short and transverse, broadly truncate at apex, evi- 

 dently more than half as wide as the prothorax, the sides very 

 feebly convergmg and strongly arcuate, becoming parallel toward 

 the eyes, the punctures coarse, close-set, the occipital spot well 

 defined; prothorax rather more than three-fourths wider than 

 long, widest near basal third, the sides evenly and distinctly 

 arcuate, the basal angles dis \n ftiscuhim ; disk with moderately 

 small, deeply impressed, not very sparse punctures, abruptly but 

 only moderately coarse, dense and forming rugaj in lateral fifth ; 

 scutellum well developed, transverse, punctulate; elytra formed as 

 \nfusctihi7n^ but more elongate, two-thirds longer than wide, as 

 wide as the prothorax and almost four times as long, the punc- 

 tures rather sparse but strong, close-set in series throughout, 

 coarse laterally, the interstitial punctures less close-set in single 

 series except on the first and second intervals ; abdomen mi- 

 nutely and sparsely punctured medially. Length 7.7 mm. ; 

 width 3.0 mm. Arizona (probably near Yuma). 



truncaticeps n. sp. 



19 — Body elongate, parallel, very large in size, shining, black, the 

 legs and antennie piceo-rufous ; head well developed, opaque, not 

 very coarsely or deeply, regularly punctato-cribrate, the punctures 

 separated by their own widths, the occipital spot small but well 

 defined, the sides moderately aixuate and converging, with the 

 angles somewhat obvious though broadly rounded ; prothorax 

 large, nearly three-fourths wider than long, widest slightly be- 

 hind the middle, the sides moderately arcuate, strongly converging 

 and becoming straight anteriorly, the basal angles right and no- 

 tably prominent, the sides before them being sinuate for a short 

 distance; disk coarsely, deeply and somewhat closely punctate, 

 gradually very coarsely and densely so laterally; scutellum mod- 

 erate, transverse, strongly and densely punctate ; elytra three-fifths 

 longer than wide, as wide as the prothorax and three and one- 

 half times as long, rapidly and obtusely ogival at apex, rugose by 

 oblique light throughout, strongly but sparsely, in great part con- 

 fusedly punctured suturally, very coarsely and closely in series lat- 

 erally; abdomen feebly rugulose, rather finely but strongly, not 

 closely punctate medially, more coarsely on the basal segment. 

 Length 8.7-9.0 mm. ; width 3.5-3.75 mm. Arizona (Nogales), 

 — H. F. Wickham crassum n. sp. 



Body more oblong-suboval, shining, dark castaneous, the under sur- 

 face, legs and antenna) rufous; head well developed, subopaque, 

 not very coarsely but deeply, subevenlv punctate, the punctures 

 separated by their own widths, the occipital spot well defined, 

 rather small, the sides rather strongly converging and moderately 

 arcuate ; prothorax large, two-thirds wider than long, widest near 

 basal third, the sides rather strongly arcuate, very converging and 

 becoming straight anteriorly, the basal angles obtuse, not blunt 

 but not at all prominent; disk strongly though only moderately 



