298 curculio:n^id^. 



[LeConte. 



pearance of Centrinus. The prosternum is broadly and tolerabl}' deeply 

 sulcatc, thus showing a tendency towards Aulobaris, wliich it resembles in 

 appearance, though the limits of the groove are ill-defined. The second 

 joint of the funicle is however no longer than the third. The base of the 

 third interspace of the elytra has a small scaly spot, and there are also scat- 

 tered hair-like scales. The stri* are deep, the punctures of the interspaces 

 are transverse and rather confused. Length 4-5 mm.; .16-20 inch. 



2. P. nigrina (Say), Cure. 31; ed. Lee. 1, 295, (Baridius); Boh., Sch. 

 Cure, iii, 690; Boh., ibid, viii, 154; Lee, Pr. Ac. Nat. Sc. Phil. 1868, 363. 



Southern States. The white scales are very sparse, and easily removed; 

 they are arranged singly upon the interspaces, except at the base of the 

 third interspace, where they form a small spot. The prosternum is broadly 

 and deeply sulcate; the groove is sparsely punctured, and sharply limited. 

 Length 3-4 mm. ; .12-16 inch. 



3. P. angusta (Lee), Pr. Ac. Nat. Sc. Phil. 1868, 363, (Baridim). 

 This species, from the material now at my command seems separable 



from P. nigrina only by its narrower form, the sides of the prothorax nearly 

 parallel behind, and by the entire absence of smooth dorsal line of the pro- 

 thorax. Specimens from Texas which are clearly referable to P. nigrina, 

 vary in the last mentioned character, the dorsal line being either distinct or 

 obsolete, so that only the form of body remains to distinguish th;'m apart. 

 Length 2.7-3.3 mm. ; .11-. 13 inch. Illinois to Kansas. 



In one specimen a few scales remain, indicating a vestiture similar to the 

 preceding. On re-examining the specimens I find my former observation 

 that the second joint of the funicle is longer than the third is incorrect. 



4. P. pusilla (Lee), Pr. Ac. Nat. Sc. Phil. 1868, 368, {Baridim). 

 New York, one specimen. Allied to P. nigrina, but more oval and less 



elongate, with the punctures of the prothorax less coarse, and without 

 smoo h dorsal line; the sides are also more oblique. Head and beak sparsely 

 finely punctured; the latter as long as the prothorax, rather slender, very 

 slightly curved. Elytra with deej) slri«, and rather wide flat interspaces, 

 each with a row of fine but distinct punctures; the specimen is rubb-'d, but 

 a few white scales are visible at the base of the third interspace, wiiich in- 

 duce me to believe that in well preserved specimens they are scattered as in 

 the preceding species. The prosternum is broadly and strongly sulcate, 

 and sparsely punctured, but the edges of the groove are less sharply defined 

 than in P. nigrina. Length 2.5 mm.; .10 inch. 



5. P. albilatus, n. sp. 



Elongate, brown, shining; with a small elongate spot at the base of the 

 third interspace, and the side pieces of meso- and metathorax densely 

 clothed with white scales. Beak punctured, feebly striate near the base; 

 head finely punctured. Prothorax a little longer than wide, rounded on 

 the sides in front, not constricted at tip; disc coarsely, rather dens ly punc- 

 tured, with a narrow smooth dorsal line. Elytra not wider than the pro- 



