Coleopterological Notices, IV. 385 



Pronotum without trace of median impunctate line ; prothorax small. 



29 sculpticollis 



20 — Prothorax not or very feebly constricted behind the apex 21 



Prothorax very strongly constricted and subtubulate at apex, the pronotal 

 punctures small, oval, subconcentrically arranged ; legs red. 



30 instaMlis 

 21 — Legs black. 



Larger species; basal constriction of the beak strong 31 cinereus 



Smaller, the constriction feeble ; pronotal sculpture coarse and rugose. 



32 apionides 

 Legs rufous or rufo-piceous ; pronotal punctures oval or sublinear, distinctly 

 separated. 

 Interspaces of the pronotal punctures polished ; elytral scales large and 

 conspicuous but not dense, only moderately uneven in distribution. 



33 perpusillus 

 Interspaces strongly and densely punctulate and dull ; elytral scales smaller 



and more elongate 34 defricailS 



22 — Prothorax distinctly wider than long, much more than one-half as wide 

 as the elytra at their point of greatest width. 

 Pronotal punctures very dense, reniform or sublunate ; elytra in great part 



rufous 35 gibMrostris 



Pronotal punctures large, rounded, very dense ; elytra black throughout. 



36 squalidus 



Prothorax much narrower, never more than slightly exceeding one-half the 



maximum width of the elytra, nearly as long as wide ; body much smaller 



than in squalidus 37 ovipennis 



1 S. lineolatllS n. sp. — Robust, convex, oblong-oval, black, the tibia? 

 rufescent ; scales of the upper surface white, moderate in size, unevenly dis- 

 tributed, feebly mottled toward the suture, forming a dense conspicuous line 

 at the base of the third and seventh intervals, and, on the fifth, almost 

 throughout its extent ; on the under surface white and very dense but sparser 

 on the metasternum than on its episterna. Head squamulose, the transverse 

 constriction fine, deep ; beak in the male moderately stout, evenly arcuate, 

 punctate, sparsely squamulose, equal in length to the head and prothorax, 

 with the antennse inserted at apical two-fifths, in the female longer, evenly, 

 strongly arcuate, smooth, much longer than the head and prothorax and three- 

 fifths as long as the elytra, the antennae inserted at about the middle ; antennae 

 long, slender, the second funicular joint but slightly shorter than the first and 

 longer than the next two, the club rather slender, elongate, fusiform, very 

 densely pubescent. Prothorax one-third wider than long, not strongly inflated, 

 usually more strongly arcuate before the middle, strongly and broadly con- 

 stricted behind the apex, the latter nearly four-fifths as wide as the base ; 

 disk strongly, densely punctate, with a broad darker median vitta in which 

 the scales become narrow, sparse and transversely arranged. Elytra at base 

 nearly one-half wider than the prothorax, not quite three times as long, the 

 sides rapidly convergent toward the acutely parabolic apex, becoming parallel 



