Coleopterological Notices, IV. 553 



Larger species, very broadly oval and subdepressed, dull in lustre ; 



elytral grooves coarse, the setae very minute 5 pectoralis 



Smaller, more elongate-oval, highly polished, the elytral striae much 

 less coarse, the setae longer, semi-erect and quite conspicuous. 



6 lugubris 

 Form slender, cylindrical, the interstitial punctures small, feeble, remote 



and transversely subrugnlose 7 anglista 



Elytral vestiture consisting of very small inconspicuous setae and long white 

 widely dispersed squamules. 

 Larger species, with the pronotal punctures moderate in size, very dense 

 and with a more or less distinct and abruptly denned median impunctate 



line 8 nigrina 



Small species, with the pronotal punctures coarse and slightly separated, 

 without trace of median impunctate line 9 caelata 



The Mexican acutipennis of Say also belongs to this genus, and 

 has the elytral intervals prominent and subcarinate on the posterior 

 declivity, as in several other species of the Central American regions. 



1 Pseildobaris farcta Lee— Proc. Ac. Nat. Sci. Phila., 1868, p. 362 

 (Baridius) ; Proc. Am. Phil. Soc, XV, p. 297. 



A conspicuous species, the largest of the genus, of a broadly 

 evenly oval, very convex form, dark piceo-rufous color and polished 

 integuments. The beak is evenly but rather feebly arcuate, robust, 

 becoming rapidly thin and flattened near the apex, slightly shorter 

 in the male than in the female, and, in both sexes, distinctly shorter 

 than the prothorax ; the antennae are normal, with the second funi- 

 cular joint one-half longer than the third. The prothorax is nearly 

 one-half wider than long, the sides convergent and broadly arcuate 

 from base to apex, broadly and distinctly constricted near the latter, 

 the constriction being evident and more densely, rugosely punctate 

 almost entirely across the dorsal surface ; base transverse, the median 

 lobe small but very prominent ; the disk is coarsely but not very 

 densely punctate, without impunctate line. Elytra quite distinctly 

 wider, and fully three-fourths longer than the prothorax, hemi- 

 elliptical, the disk with rather coarse deep and abrupt grooves, the 

 intervals flat, scarcely twice as wide as the grooves, the second and 

 third much wider, the punctures rather large, moderately deep, not 

 very close-set and distinctly transverse, forming single series on 

 each, but sparsely confused on the second and third. The anterior 

 coxae are separated by their own width, the prosternum before them 

 narrowly deeply and abruptly sulcate. Length 4.7-5.0 mm.; width 

 2.4-2.6 mm. 



