600 Coleopterological Notices, V. 



It would not be far wide of the truth to say that Centrinus and 

 its allied genera form one of the most difficult studies to be met 

 with in the Coleoptera. After completing my recent revision, I 

 went carefully over the manuscript and withdrew the descriptions 

 of many forms, which at first seemed to represent distinct species. 

 As seen above, however, this eliminating process was not carried 

 quite far enough, and there may be others which must eventually 

 disappear, but the number of these will probably be inconsiderable. 

 I have no hesitation in stating the total number of species of Barini 

 within our limits to be about 300. In my cabinet there are at 

 present nearly 600 species from Brazil, and the number inhabiting 

 that country cannot be far short of 1500. For the world at large 

 4000 species would be a conservative estimate. 



The three following species, recently submitted to me for exami- 

 nation by Mr. Ulke, are sufficiently interesting to be made known 

 on the present occasion. 



Stetliobaris Cicatricosa n. sp. — Oblong-oval, convex, subglabrous, 

 highly polished, black, the entire elytra bright red, the scutellum black ; legs 

 and antennae black, with a piceous tinge. Head finely, sparsely punctate ; 

 beak short, thick, feebly arcuate, ranch shorter than the prothorax, finely 

 punctate, the punctures coarser and dense at the sides ; antennae inserted at 

 the middle, fnnicle short, stout, cylindrical, the basal joint stouter and as 

 long as the next three, two to seven equal, short, strongly transverse and 

 •closely coarctate, club moderate, oval, nearly as long as the preceding six 

 joints. Prothorax one-half wider than long, the sides feebly convergent and 

 broadly arcuate from the base to apical fourth, then abruptly and strongly 

 constricted, the apex conically subtubulate ; base more than twice as wide as 

 the apex, very feebly bisinuate ; disk strongly but sparsely punctate, the 

 punctures distinctly isolated beneath at the sides ; median impunctate line 

 imperfect. Scutellum small, subquadrate, glabrous, impressed. Elytra dis- 

 tinctly wider than the prothorax and about twice as long, the humeral callus 

 but moderately developed ; sides less than usually convergent, the apex very 

 broadly rounded ; striae coarse, very deep, with the edges obtuse, not at all 

 crenate but finely, strongly punctate along the bottom, the eighth represented 

 only by a series of remote punctures from the humeri to a little behind the 

 middle, then abruptly assuming the form of a deep narrow cleft to apical sixth, 

 the cleft-like portion margined on both sides by a broader, deep, abruptly 

 defined and setose fossa, the combination giving the appearance of a longi- 

 tudinal scar ; intervals nearly flat, two or three times as wide as the striae, 

 minutely, sparsely punctate, the punctures in single uneven series, more con- 

 fused on tlie second and fifth. Under surface sparsely setose, strongly punc- 

 tured, the abdomen rather sparsely so. Tarsal claws small, slender, free and 

 divergent. Length 3.5 mm.; width 1.9 mm. 



Texas. 



