212 GEORGE H. HORN, M. D. 



feehle, angles feebly auriculate; disc convex, rather coarsely and closely punc- 

 tate with a smooth border along the apex and a smooth median line in posterior 

 half. Elytra broader at base than the thorax, about a third longer than wide, 

 humeri moderately prominent, sides arcuate, disc convex with strise of coarse, 

 closely-placed punctures, becoming a little finer toward apex, the strife all regu- 

 lar, except the short post-humeral striae exterior to the seventh, which are con- 

 fused. Body beneath piceous, with distinct seneous lustre. Propleurse coarsely 

 and closely punctate, metasternuni still more coarsely, abdomen coarsely sparsely 

 punctate at base, gradually more finely toward apex. Legs rufo-testaceous, 

 femora slightly bronzed on the outer side. Length .12 inch. ; 3 mm. 



This species at first glance might be mistaken for a Graphops, 

 from which the pubescence had been removed. It is rather an aber- 

 rant species by the eyes being scarcely emarginate, and the groove 

 which surrounds them not deep and not extended in front. The 

 lateral thoracic margin is also very feeble, and the propleurse coarsely 

 and closely punctate. 



M. loiigiiluui n. sp. — Form oblong, moderately elongate, beneath piceous, 

 upper surface, legs and antennae yellowish, thorax each side with a dusky area, 

 each elytron with two small spots and suture narrowly piceous. Head smooth, 

 very sparsely punctate, punctures more numerous on the clj-peus, a short frontal 

 impression. Thorax one-third wider than long, apex very little narrower than 

 base, apex slightly prolonged, sides moderately arcuate, angles scarcely promi- 

 nent, lateral margin narrow, but distinct; disc convex, very distinctly punctate, 

 but not coarsely nor closely. Elytra oblong, more than a half longer than wide, 

 convex, humeri moderately prominent, surface moderately deeply striate, striae 

 coarsely, deeply and closely punctate, much less distinct near the apex, intervals 

 distinctly convex ; each elytron with the sutural interval piceous and two pice- 

 ous discal spots, one on the fifth interval obliquely behind the umbone, a second 

 smaller on the sixth a little behind the middle. Body beneath not punctate. 

 Length .12 inch. ; 3 mm. 



Two specimens are referred to this species which exhibit more pro- 

 nounced elytral sculpture than any other in our fauna. The male 

 has the first joint of the anterior and middle tarsi dilated and the 

 sutural angle of the elytra slightly prolonged. As in the preceding 

 species, the strije are all regular, excepting the two short ones exterior 

 to the seventh. 



A third specimen before me differs from the other two in having 

 the elytral strise not impressed, a few punctures on the proi)leun)e ; 

 abdomen rufescent and sparsely punctate. It doubtless indicates a 

 true species, but from the already known variability of others I 

 propose to pass it with this note until others appear. 



Occurs in Arizona. 



HI. iliibiosiini Say, Journ. Acad, iii, p. 447; edit. Lee. ii, p. 214 {nee. Crotch, 

 Proc. Acad. 1873, p. 41). — Very like Typoph. canellus in form and similarly vari- 

 able in color. Antennae pale at base, piceous externally. Head sparsely, finely 



