Goleopterological Notices, IV. 513 



species, and is not at all allied to the form mentioned. It was 

 apparently taken in great abundance. 



Among the specimens before me there is one which is singularly 

 deformed, the pronotum having, near the base and at lateral fourth, 

 a prominent polished wart-like tubercle. For a considerable dis- 

 tance around the tubercle, the small normal squamules are entirely 

 absent but replaced by large scale-like plates, concave or umbilicate 

 in the centre, each of which completely fills a puncture. 



5 Plesiobaris disjlllicta n. sp. — Subcylindrical, very slender, con- 

 vex, black throughout, strongly shining, sparsely clothed with very small 

 setae, especially evident but not at all conspicuous toward the sides of the 

 pronotum, very minute and sparse throughout on the elytra, the latter with a 

 small elongate spot of white squamules at the base of the third interval, the 

 meso- and metasternal side-pieces and sides of the last three ventral segments 

 also densely squamulose, the remainder of the under surface subglabrous. 

 Head very feebly, sparsely punctate, the impression rounded, feeble ; beak 

 shining, finely, deeply, moderately densely punctate, rather stout, cylindrical 

 somewhat strongly, evenly arcuate, a little longer than theprothorax ; antenna? 

 moderate, the club rather large, as long as the preceding six joints combined, 

 the latter short and coarctate. Prothorax about one-fourth wider than long, 

 the sides feebly divergent and nearly straight from the base almost to the 

 apex, then rounded for a short distance, the subapical constriction very small 

 and feeble ; apex truncate, nearly as wide as the base, the latter broadly, 

 very feebly bisinuate ; disk with moderately coarse, deep, perforate punctures 

 which are almost contiguous, the impunctate line narrow and feebly defined, 

 only visible toward the centre. Scutellum small. Elytra at the base abruptly 

 quite distinctly wider than the prothorax, rather more than twice as long as 

 the latter, the sides parallel and almost straight, somewhat abruptly, acutely 

 ogival in apical third ; humeri obliquely rounded, the callus not conspicuous ; 

 disk with flue stria?, becoming coarse near the base, the intervals two to three 

 times as wide as the stria?, each with a single series of fine remote punctures, 

 becoming closer and more distinct toward base. Abdomen rather strongly, 

 coarsely and closely punctured, especially toward base. Prosternum broadly, 

 feebly impressed, separating the coxa? by quite distinctly less than their own 

 width. Length 1.7-2.1 mm. ; width 0.6-0.8 mm. 



Michigan ; Missouri ; Indiana ; South Carolina. 



This species was considered by LeConte as possibly representing 

 Boheman's Baridius T-signum, but it is evidently a widely different 

 species. The original description of T-signum includes the phrase 

 "elytris antice thoracis basi non latiora," and also states that the 

 rostrum is shorter than the prothorax, the elytra having a small 

 sparsely squamose maculation behind the middle, and the legs rufo- 

 piceous. One of the most conspicuous characters of disjuncta relates 



