Coleopterological Notices, IV. 631 



coarsely, moderately closely punctate. Presternum flat, evenly, feebly con- 

 stricted but not foveate behind the apex, separating the coxse by very slightly 

 more than their own width. Length 3.0 mm. ; width 1.25 mm. 



Iowa (Keokuk). 



The single specimen, apparently a male, represents a species en- 

 tirely distinct from any other here described in its more depressed 

 form and coarse sculpture, and especially in the distinctly concave 

 elytral intervals. From tabida, which it more closely resembles, it 

 may be known by the shorter, less conspicuous vestiture, more slen- 

 der beak and very much coarser sculpture of the pronotum. There 

 are, judging by material which has been recently sent me, apparently 

 a number of species in our Central States allied to deplanata and 

 tabida, and their separation will prove to be a problem of some 

 difficulty. 



6 Limnobaris punctiger Lee. — Proc. Am. Phil. Soc, XV, p. 314 



(Centrinus). 



Oval, rather narrow, piceous, the legs, beak and antennas paler, 

 rufous; vestiture beneath consisting- of tine sparse squamules, almost 

 absent above, but each puncture of the elytral series apparently with 

 a long slender whitish scale. Beak slender, equal throughout, cylin- 

 drical, evenly, moderately arcuate, nearly as long as the head and 

 prothorax, smooth, finely, linearly punctate at the sides toward base, 

 the antennas inserted a little beyond the middle, the scape long, ex- 

 tending almost to the eyes, the first funicular joint as long as the 

 next three, the second fully one-half as long as the first and nearly 

 as long as the next two, the club rather small but abrupt, the basal 

 joint constituting a little more than one-half the mass, somewhat 

 obconical, sparsely pubescent and slightly shining. Prothorax one- 

 third wider than long, the sides parallel and feebly arcuate to just 

 beyond the middle, then broadly rounded and convergent to the 

 apex, the latter one-half as wide as the base, the apical constriction 

 very small and feeble; punctures coarse, somewhat irregular in 

 form, not very dense ; mes-epimera strongly exposed from above, 

 Scutellum small, quadrate. Elytra distinctly wider than the pro- 

 thorax and more than twice as long, hemi-elliptical, the apex rather 

 narrowly rounded, the humeri feebly tumid ; striae deep, abrupt, 

 remotely punctate along the bottom, the intervals flat, equal, one- 

 half wider than the grooves, each with a series of relatively coarse 

 deep rounded and somewhat remote punctures. Prosternum flat 

 but with a very strong transverse subapical constriction, the coxae 



