186 CURCULIOXID^]. [LeConte. 



one-half as wide as the head ; in the female it is slender, one-third longer, 

 and with the antennae inserted about the middle of the length. 



6. B. cavifrons, n. sp. 



Black, covered with slaty -black pcales. Beak shorter than the prothorax, 

 rather stout, scarcely curved, flattened above and finely tricarinate, lateral 

 grooves deep ; front deeply excavated between the eyes. Prothorax longer 

 than wide, gradually slightly narrowed in front, constricted near the tip, 

 sides not rounded ; undulated by deep, distant anastomosing grooves, of 

 which the most conspicuous forms a dorsal channel ; surface not coarsely 

 granulated. Elytra nearly one-half wider than the prothorax, humeri 

 oblique, scarcely rounded, sides converging behind, tip more elongated 

 and more narrowly rounded than in the next species ; posterior callus 

 prominent, striae punctured; interspaces broad, slightly uneven, each with 

 a row of very short whitish bristles; each side just behind the middle is a 

 small oblique spot of white scales, extending from the fifth to the second 

 stria. Antennae and legs nearly black ; tibiae long, much curved ; tarsi 

 short, slender. Length 4.3 mm. ; .17 inch. 



Enterprize, Florida ; May; one specimen ; Messrs. Schwarz and Hub- 

 bard. Closely related to the next, but differs by the deeply excavated 

 front, and elytra more narrowly rounded at tip. 



7. B. magister, n. sp. 



Blackish-brown, covered with dark-brown scales. Beak as long as the 

 prothorax, rather stout, slightly curved, somewhat flattened above, and 

 feebly tricarinate, lateral grooves deep; front with an elongate large fovea 

 between the eyes. Prothorax longer than wide, sinuate on the sides, more 

 narrowed towards the tip, and deeply constricted ; surface deeply sculp- 

 tured with anastomosing grooves, with a broad dorsal channel behind the 

 middle ; not coarsely granulated. Elytra nearly one -half wider than the 

 prothorax, more oblong than in B. cavifrons, humeri less oblique and more 

 rounded, tips more obtusely rounded ; posterior callus prominent ; striae 

 coarsely punctured ; interspaces slightly convex, each with a row of very 

 short distant bristles ; just behind the middle is a transverse spot of pale 

 scales extending from the fifth to the third stria ; the alternate interspaces 

 are variegated with pale-brown spots. Antennae and legs nearly black ; 

 tibiae less slender than in B. cavifrons, tarsi a little longer. Length 5 mm. ; 

 .20 inch. 



Texas, Belfrage: Detroit, Hubbard and Schwarz ; Canada. 



8. B. nebulosus, n. sp. 



Rather robust, black, clothed with dirty gray scales, variegated with 

 darker and paler. Beak slender, curved, finely punctulate, naked, except 

 at base, as" long as the prothorax ; front feebly channeled. Prothorax 

 wider than long, coarsely granulated, sides nearly straight for more than 

 two-thirds the length, then obliquely narrowed and feebly constricted. 

 Elytra less than one-half wider than the prothorax, oblong, impressed 

 obliquely behind the base ; humeri prominent, rounded, tips broadly 



