AMERICAN COLEOPTERA. 233 



the line <Jividing the colors is slightly oblique backwards towards the suture, 

 liength 2.5 mm; .10 inch. 



One 9 , Enterprize, Florida, May 24th ; Messrs. Hubbard and 



Schwarz. 



■10. B. opacillus, Lee. New Spec. Col. (Smithsonian Svo), 54. — Fuscous, 

 elytra paler, opake, finely and densely rugosely punctured. Head opake, finely 

 granulated, fiat, sparsely punctured. Prothorax wider than long, sides nearly 

 straight in front, then rounded, hind angles very obtuse, but distinct; finely 

 granulated, opake, finely punctured, dorsal line obsolete. Dorsal segments 

 shining, nearly smooth; ventrals strongly punctulate. Side margin of pro- 

 thorax acute, fianks with a narrow deep marginal groove, prosternal sutures 

 effaced, coxal fissures short, closed. Mandibles long and slender, acutely toothed 

 at the middle; mentum with a rounded impression. Legs pale fuscous. Length 

 4 mm ; .l(i inch. 



%. — Eighth ventral segment with two distant slightly converging impressed 

 lines, and a faint longitudinal impression. 



One pair, coast of Maine, Mr. W. Stimpson ; a similar one found 

 by mo at Coney Island, New York : they are unfortunately all im- 

 mature. 



41. B. cordatus. Say, (0.vjt/telus), Trans. Am. Phil. Soc. iv, 461 ; ed. Lee. 

 ii, 576; Er. Staph. 780. — Black, antennse testaceous, darker at tip; legs yellow ; 

 elytra yellow with a large common fuscous blotch, which is smaller, or even 

 obsolete in immature specimens. Head broad, flat, finely granulated, opake. 

 Prothorax finely granulated, opake. one-third wider than long, sides subparallel, 

 rounded behind, hind angles obtuse, indistinct; disc punctulate, dorsal line 

 obsolete. Elytra finely and densely piinctured, sutural angle not much rounded. 

 Dorsal segments shining, nearly smooth ; ventrals strongly punctulate, tip dark 

 testaceous. Side margin of prothorax acute, flanks with a narrow marginal 

 groove, prosternal sutures wanting, coxal fissures very short, closed. Length 

 4 mm ; .16 inch. 



'J,. — Eighth ventral segment with a feeble and narrow triangular inipression. 



Atlantic coast from New York to Georgia. Immature specimens 

 are pale brown, with the head, prothorax and penultimate dorsal 

 segment darker. The mentum has a small basal circular impression. 

 The mandibles are long and slender, with an acute tooth about the 

 middle. The ba.se of the elytra is sometimes also fuscous. 



42. B. forci2><itiiN, Lee. Xeiv Spec. Col. (Smithsonian Svo), 54. — Piceous, 

 legs and aulenuce testaceous, the latter dusky at tip ; elytra pale yellow, with 

 the base, and sutural band dilated behind, but not extending to the tip, dusky. 

 Head opaki-, flat, finely granulated. Prothorax a little wider than long, sides 

 nearly straight in front, rounded behind, angles indistinct; disc opake, finely 

 granulated, punctulate, dorsal line indistinct. Elytra densely and finely punc- 

 tured, sutural angle well rounded. Dorsal segments nearly smooth, ventrals 

 sparsely punctulate. Side margin of prothorax acute, flanks with a narrow 

 marginal groove, prosternal sutures wanting, coxal fissures short, closed. 



