• COLEOPTERA. 183 



the length from the base where they are but very slightly wider ; sides 

 nearly straight ; apical angles obtuse and slightly rounded ; disk abruptly 

 and obtusely rounded behind, rather broadly convex nearly twice as long as 

 wide, and more than five times as long as the pronotum, feebly and sparsely 

 punctnlate and very minutely sub-granulate, polished ; each elytron has in 

 the median black vitta, beginning at one-fifth the length from the base and 

 terminating at one-fourth the length from the apex, two long narrow ridges 

 with an intervening canaliculation ; lateral margins narrowly reflexed. 

 Legs , robust ; posterior femora very robust, strongly compressed ; tibiae 

 finely and densely pubescent ; first joint of the posterior tarsi but slightly 

 shorter than the remainder couibined. Abdominal segments very finely and 

 densely ruguloso-jjunctulate. Prosternal intercoxal process slightly dilated 

 and depressed at tip, pubescent. Length 6.8 mm, ; width 3.0 mm. 



Milt'ord, Delaware, 1. 



The coarse granulation of the under surface of the elytra sinning 

 through the transparent substance of the latter, gives to the narrow 

 pale vittae a most beautiful appearance when examined with sufficient 

 power ; these vittae are of a pure silvery white when the insect is 

 living, but subsequently turn to a yellowish color. The species is 

 one of the most distinct, and, according to Mr. Crotch's table of this 

 genus, should apparently follow alternata in the catalogue. 



BRUCHUS Linn. 



B. cnl>iculus n. sp. — Form slightly elongate. Head and entire under 

 surface black ; pronotum black except a large spot near the basal angles 

 and a smaller one near the apical angles which are obscure rufous ; elytra 

 mottled with black and rufous, the most prominent black spots being a 

 small humeral, a broad medial one not attaining the suture, and a nuich 

 larger and irrregular apical spot ; pubesc<^nce very sparse, cinei-eous. Head 

 strongly deflexed, much longer than wide, abruptly constricted behind tlie 

 eyes into a rather long neck, entire surface* finely and strongly ruguloso- 

 punctulate ; interocular surface abruptly slightly below the surface of the 

 eyes, much narrower than the latter, having a broadly obtuse but very dis- 

 tinct longitudinal carina ; eyes coarsely granulated, large, lenses very 

 convex ; antennae shorter than the head and prothorax together, first four 

 joints fuscous and slender, remainder strongly compressed, black, with the 

 joints strongly serrate externally, becoming much more strongly so toward 

 tip and also wider, very compact, terminal joint resting obliquely along the 

 tooth of the preceding joint, pubescence very fine and short, cinereous, 

 second joint oval, slightly longer than wide, much shorter and more robust 

 than the third, third slightly longer and less robust than the fourth. 

 Prothorax widest at base where it is about one-half wider than long ; sides 

 strongly convergent anteriorly and very feebly arcuate ; apex less than 

 one-half as wide as the base, broadly and very feebly arcuate ; base strongly 

 arcuate, feebly sinuate at each side of the middle with the intermediate 

 edge at the middle very broadly arcuate, almost truncate, also more strongly 



