American Car.a.boidea 209 



head four-fifths (cT) to five-sixths (9) as wide as the prothorax, 

 the broad apex alutaceous, with elevated sides; eyes well developed, 

 prominent; mandibles stout; antennae very slender, blackish, paler 

 distally, the basal joint pale; medial joints four times (cf ) to three 

 times (9) as long as wide; prothorax two-thirds wider than long, 

 widest just before the middle, the sides oblique, straight and thick- 

 ened basally, the angles obtuse but not rounded; foveae large, 

 shallow, impressed, the median stria fine; base beaded, obliquely 

 rounded laterally; apex broadly, evenly sinuate; elytra oblong, 

 very obtusely rounded at tip, one-half longer than wide, two-fifths 

 wider than the prothorax; striae fine, the intervals nearly flat, the 

 two punctures very distinct. Length (cf 9) 6.0-6.25 mm.; width 

 2.2-2.25 n^'Ti- California (San Joaquin Co.) ferrugineus Dej. 



Sides of the prothorax strongly reflexed, broadly so basally; color much 

 darker 8 



8 — Form oblong, moderately convex, shining, black, the lateral edges 

 finely paler, the elytra strongly iridescent; head very large, five- 

 sixths as wide as the prothorax, shorter than wide, with large and 

 rather prominent eyes and strong, very curved mandibles, the sides 

 of the broad epistoma elevated ; antennae ( 9 ) very slender and 

 filiform, slightly over one-half as long as the body, black, gradually 

 paler distally, the basal joint pale only basally, the medial joints 

 fully four times as long as wide; prothorax transverse, three-fourths 

 wider than long, widest near anterior third but with the sides evenly 

 rounded, becoming more oblique and nearly straight basall3^ the 

 angles very obtuse, somewhat blunt; surface with some transverse, 

 ruguliform lines, the stria fine, impressed, subentire; foveae broadly 

 concave, with linear bottom; base not beaded, somewhat narrower 

 than the sinuate apex, the apical angles blunt; elytra three-fifths 

 longer than wide, scarcely a third wider than the prothorax, very 

 obtuse at apex; striae smooth, fine, the intervals broadly convex, 

 the two punctures distinct, just before the middle and near apical 

 fourth; legs and epipleura obscure testaceous. Length (9) 5-3 

 mm.; width 1.9 mm. District of Columbia grandiceps n. sp. 



Form less parallel, the anterior parts relatively not so large, moderately 

 convex, shining, piceous, the head blacker, large, four-fifths as wide 

 as the prothorax, with rather large prominent eyes; surface aluta- 

 ceous and unusually sloping anteriorly, with the usual elevated 

 sides, the apex sinuate; mandibles moderate, with equally truncate 

 apex; antennae piceous, very slender, the medial joints not quite 

 four times as long as wide, the first joint fuscous, nubilously paler 

 basally; prothorax not so large as in grandiceps but otherwise 

 similar, except that the sides are rather more strongly rounded 

 anteriorly, becoming straight in fully basal half; foveae broadly 

 concave, with the short lineate bottom finer, shorter and more 

 definite than in the preceding and slightly oblique; elytra shorter, 

 scarcely one-half longer than wide and about one-half wider than 

 the prothorax, feebly iridescent; striae in the preceding, the intervals 

 slightly flatter; tarsi shorter, the posterior much more distinctly 

 T. L. Casey, Mem. Col. IX, Feb. 1920. 



