Coleopterological Notices. 463 



as longulus, but on closer observation it is readily seen that the 

 antennae are rather more slender, the base of the prothorax straight, 

 the humeri exposed and the hypomera not impressed near the 

 lateral edges. 



The anterior tarsi of the male are moderatel}^ dilated and vary 

 considerably in the vestiture of the under surface, thus affording 

 excellent subordinate structural characters for the identification of 

 the species. The wings are well developed, and the flight is proba- 

 bly stronger than in Blapstinus on account of the greater lightness 

 of the body. 



The species may be divided into two distinct groups as indicated 

 in the following table : — 



Anterior tibise normal ; punctuation of the elytral intervals confused ; foi-m 

 strongly depressed I 



Anterior and middle tarsi densely spongy-pubescent beneath in the male ; 

 form broader ; pirothorax strongly transverse, the apex more deeply emar- 

 ginate ; punctures of the elytral strife finer laticollis 



Anterior tarsi dilated and spongy-pubescent beneath ; intermediate simply 

 spinose beneath ailgllStllS 



Anterior tarsi scarcely perceptibly dilated, devoid of fine pubescence be- 

 neath ; intermediate not dilated, coarsely spinose tenuis 



Anterior tibiae distinctly compressed and dilated from base to apex ; each 

 elytral interval with a single even series of setigerous punctures ; body 

 more convex II 



Pubescence extremely short and inconspicuous ; pronotal punctuation very 

 sparse throughout ; punctures of the intervals very much finer than those 

 of the striae pai'TUlUS 



Pubescence longer, denser and much more conspicuous ; pronotal punctua- 

 tion dense toward the sides ; punctures of the intervals coarser, not so 

 noticeably smaller than those of the striae ; size larger adveiia 



M. laticollis n. sp. — Oblong-elongate, parallel, depressed, black through- 

 out ; legs dark rufous ; antennae testaceous ; integuments strongly shining ; 

 pubescence rather long and line, sparse, pale cinereous and distinct. Head 

 coarsely, moderately densely punctate, the median line almost impunctate ; 

 epistofaa extremely feebly, broadly sinuate ; upper lobes of eyes rather large ; 

 antennae slender, distinctly incrassate toward tip, third joint slender but 

 shorter than the next two, tenth nearly as long as wide, eleventh very slightly 

 longer than wide and as wide as the tenth. Prothorax three-fourtlis wider 

 than the head and fully two-thirds wider than long ; base straight and trun- 

 cate, equal in width to the apex, the latter strongly emarginate throughout 

 the width in circular arc ; basal angles distinctly obtuse but not at all rounded ; 

 sides strongly, evenly arcuate ; disk widest in the middle, coarsely, very 

 sparsely punctate toward the middle, more densely so but with the punctures 



