122 Coleopterological Notices, III. 



46 H. uniseriatus n. sp. — Oblong-oval, rather narrow, convex, highly 

 polished and pale flavo-testaceous throughout ; pubescence somewhat long 

 and semi-erect, coarse, pale and sparse. Head distinctly, evenly convex, 

 coarsely, deeply, rather sparsely punctate ; eyes small, separated by one-half 

 more than their own width ; antennae moderately stout, a little less than one- 

 half as long as the body, the joints rather strongly obconical and scarcely 

 one-half longer than wide, the third scarcely as long as the fourth in the 

 female. Prothorax about one-half wider than long, the apex three-fourths as 

 wide as the base, feebly arcuate ; sides parallel and almost straight in basal 

 two-thirds, the apical angles broadly rounded ; base transverse, the sinua- 

 tions broad and rather distinct ; basal angles right, distinctly, narrowly 

 rounded ; disk broadly, feebly impressed in the middle toward base, coarsely, 

 rather sparsely punctate, the basal foveae small but quite distinct. Elytra 

 nearly four times as long as the prothorax and about one-half wider ; sides 

 parallel, broadly arcuate behind, the apex ogival ; humeri rounded, rather 

 broadly exposed ; disk with series of rather coarse, deep, moderately approxi- 

 mate punctures, the series scarcely at all impressed except very feebly toward 

 the suture ; intervals each with a single even series of very fine punctures. 

 Abdomen finely, sparsely punctate, the prosternum very densely so. Legs 

 moderate, slender ; basal joint of the hind tarsi slightly longer than the 

 remainder. Length 5.0 mm. ; width 1.9 mm. 



California. 



The unique specimen is a female and it is possible that in the 

 male, the third antennal joint will prove to be quite distinctly 

 shorter than the fourth. 



This species is decidedly aberrant in the form of the prothorax, 

 which is more subquadrate, in the smaller eyes and especially in 

 the arrangement of the elytral punctures. I am however unable to 

 perceive any structural characters, which would warrant its removal 

 from the present genus. The maxillary palpi are of a common 

 form, the fourth joint being almost evenly recti-triangular, with the 

 oblique apex about equal in length to the outer side. 



HENCE CEUS Champ. 



Assuming M. crassicornis Champ, as the type of this genus, its 

 characters may be briefly stated as follows : — 



Body oval, rather broad and moderately convex, the sides of the elytra con- 

 tinuous in curvature with those of the prothorax, the basal angles of the 

 latter acute and slightly produced posteriorly. Head small, short, deeply 

 inserted, vertical in repose, the fourth joint of the maxillary palpi very broad, 

 the apex nearly one-half longer than the outer side ; terminal joint of the 

 labial short and robust. Antennae stout, the intermediate joints dilated in 



