364 PROCEEDINGS OF THE ACADEMY OF 



near the tip, where it is more strongly rounded and slightly constricted disc, 

 coarsely but more sparsely punctured than usual, punctures more distant 

 than the length of their diameters; elytral strife impunctnred, intervals much 

 wider than the stria;, with single rows of small punctures. Long. 3 mm. One 



specimen, Oregon 21. sparsus. 



8. Body elongate, bright brown, very shining, prothorax rather sparsely 

 punctured with a broad undefined smooth medial line ; elytral uneven, 

 with a transverse impression before the middle, an oblique one behind the 

 humeri, and a verj^ faint one behind the middle ; striae feebly punctured, in- 

 tervals much wider than the striaj, with scarcely perceptible rows of very fine 

 punctures. Long. 3 mm. Ohio and Illinois ; (depredates on grape vine, pro- 

 ducing the gall described by Mr. Walsh as vitiscunnus.).... 22. S e s o s tr 1 s.* 



A— c. 



The species contained in this group are of a slender form like some of 

 those in b, and like them have an elongated moderately slender beak; the 

 antenna; are not quite so stout, though the 2d joint of the funiculus is not 

 conspicuously longer than the 3d. The body beneath is densely clothed with 

 depressed ash colored hairs, and is equally densely pubescent above. The 

 prothorax is constricted near the tip, and the disc is strongly and densely 

 punctured with a slightly elevated dorsal line. The species of this group 

 have the last larsal joint more elongated than in the other species of the 

 genus, and the claws closely approximated, and somewhat connate at base ; 

 the males are also distinguished by the last ventral segment being armed at 

 tip with a small tooth. These differences, combined with those of appear- 

 ance, produced by the dense covering of hair, would indicate the propriety 

 of separating them as a distinct genus. 



Prothorax feebly constricted near the tip. 1. 



" more strongly " " " 2. 



1. Small, pubescence less dense, prothoraxlonger than wide, feebly narrowed 

 in front, slightly rounded on the sides, and feebly constricted near the tip. 

 without basal glabrous spots. Long. 3 mm. Maryland, 1 spec. .23. p 1 u m b eu s. 



Larger, pubescence very dense, prothorax very little longer than wide, 

 gradually narrowed in front, slightly narrowed on the sides, and feebly con- 

 stricted near the tip, with three basal glabrous black spots extending upon 

 the scutellum and base of elytra. Long. 4-5 mm. Atlantic States, abun- 

 dant 24. t r in o t a t u s ;S(/y. 



2. Larger, pubescence dense, prothorax scarcely longer than wide, subtra- 

 pezoidal gradually narrowed from the base, sides nearly straight, suddenly 

 rounded near the tip and more strongly constricted, coarsely and densely 

 punctured, distiucily carinated, marked with basal spots as in the preceding. 

 Long. 45 — 6 mm. California, also at Cajje San Lucas, 3 spec. 



25. mucoreus Lee. 

 B. 

 The species of this division have the beak longer and more slender than 

 those of A, and the antenna; are much thinner, the 2d joint of the funiculus 

 is much longer than the 3d, thus showing an approacli to Centrinus, which 

 these species resemble in their form ; the body is nearly glabrous, and the 

 prothorax is constricted near the tip. 



The three species before me may be distinguished as follows : 

 Body black, somewhat shining, prothorax strongly punctured, without dor- 

 sal carina, gradually and strongly narrowed from the base, and rounded on 

 the sides ; elytral intervals with single rows of strongl}' marked punctures, 

 humeri scarcely wider than the base of prothorax. Long. 3-5 mm. Kansas, 

 one specimen 26. na s u t u s. 



* Vide Herodotus, Euterpe, cap. 102. 



[Dec. 



