30 J. L. LECONTE, M. D. 



HYLOBIUS Sch. 



A typical specimen from Mr. Roelofs of H. assiinilis proves it to be 

 not distinct from H. pales Herbst. 



ERODISCUS Sch. 



E. tinaillUS. — Shining black, with a few long erect white hairs. Head 

 smooth, beak extending to the third ventral segment. Prothorax uniformly deeply 

 and sparsely punctured, very convex in front, tubularly constricted at the base. 

 Elytra very convex, elongate-oval, not wider than the prothorax, with rows of 

 deep, distant punctures; tip rounded ; thighs armed with a small tooth. Length 

 4-6 mm. 



Florida, Mr. H. G. Hubbard ; two specimens. 



CHAL,CODERI»IlJS Sch. 



C. spinifer Boh. Specimens of this species collected in Arizona by 

 Mr. Morrison have on each elytron two rather large spots of pale pubes- 

 cence and the prothorax is somewhat more finely punctured than in the 

 one found in Florida by Mr. Hubbard. 



ACAL.L,ES Sch. 



A. costifer. — Black, covered with black appressed scales and very short bris- 

 tles. Prothorax as long as wide, strongly punctured, finely carinate, rounded on 

 the sides, bisinuate at base, hind angles nearly rectangular, disc with four small 

 dots of white pubescence placed transversely at the middle, and one at the base 

 near the scutel. Elytra elongate-oval, humeri well defined, strise composed as 

 usual of quadrate punctures, 5th interspace elevated from behind the base to about 

 one-sixth from the tip; sides slightly rounded, sinuate near the tip and more 

 rapidly narrowed ; a few white dots are seen in the posterior third, and are more 

 numerous in the middle third, where they form a diffused irregular transverse 

 band. Length 4-6 mm. 



Columbus, Texas ; one specimen ; Mr. Schwarz. Allied to A. cari- 

 natus, but quite distinct by the narrower form ; elytra not wider than 

 thorax, and the 5th interspace strongly elevated suddenly dropping at 

 one-fifth from the tip ; also by the outline of the elytra, which is more 

 gradually oblique and more sinuate behind the middle. 



A. Stilcicollis. — Very small, elongate, black, clothed with thick dark-brown 

 scales, with rows of short pale bristles on the elytra. Prothorax. wider than long, 

 rounded on the sides, disc clathrate with very large punctures, with three narrow 

 dorsal ridges and well defined grooves which limit them. Elytra not wider than 

 thorax, elongate-oval regularly rounded on the sides, humeri obtuse; a narrow 

 transverse band of pale scales is seen at the 2d third of the elytra, and the general 

 surface is slightly clouded with brown. Length 2 mm. 



Columbus, Texas ; one specimen, Mr. Schwarz. Similar in appear- 

 ance to A. longulus, but easily distinguished by the peculiar sculpture of 

 the prothorax. 



