MEMOIRS ON THE COLEOPTERA 



less sparse and the sides rather more widely concavo-explanate, 

 coarsely and irregularly punctate; elytra slightly more than one- 

 half longer than wide, at base distinctly, and at the middle barely 

 two-fifths, wider than the prothorax, the sides medially more abruptly 

 and subprominently arcuate and thence rapidly converging to the 

 subacute apex, only very feebly arcuate and feebly convergent to the 

 base, the reflexed carina similar, extending fully to the middle; surface 

 rather more broadly convex, opaculate, almost perfectly smooth, 

 the sparse creases very fine and feeble, the punctures much more 

 minute and only just visible, sparse; abdomen dull, almost smooth, 

 more shining and distinctly, sparsely punctate apically; prosternum 

 almoxt similar; intromittent spicule extremely slender, almost 

 filiform. Length (cT) 12.8 mm.; width 6.0 mm. Arizona (locality 



unrecorded) suavis n. sp. 



6 Form rather stouter than usual, opaque; head impressed transversely, 

 deeply, rather coarsely and densely punctate, less coarsely but still 

 perforately on the vertex; antennae moderate; prothorax not quite 

 as long as wide, the apex distinctly narrower than the base, deeply, 

 evenly sinuate, the angles advanced and finely acute; sides broadly 

 angulate at the middle, thence converging and straight to the apex 

 anteriorly and parallel to feebly converging and straight to sub- 

 sinuate to the basal angles, which are slightly less than right, sharp, 

 more or less prominent, the base being very feebly bisinuate, be- 

 coming feebly posteriorly oblique laterally; punctures deep and per- 

 forate, small and moderately sparse, becoming gradually coarse and 

 more or less dense toward the sides; median parts evenly and mod- 

 erately convex, gradually and rather widely concavo-explanate 

 laterally, the edge somewhat sharply though moderately reflexed and 

 thin; scutellum small, equilatero-triangular; elytra three-fifths 

 longer than wide, one-half to two-thirds wider than the prothorax, 

 gradually very moderately declivous and obliquely acuminate 

 posteriorly, the parabolic apical lobe rather prominent; sides strongly 

 arcuate to the humeri, which are very obtuse with their edge rather 

 finely and very faintly reflexed; surface broadly convex, sometimes 

 flattened suturally, smooth, with faint creases, minute and sparse 

 punctulation and generally with two fine and very faint vestigial 

 costules on each, the sides obtusely rounded in section except at the 

 humeri; under surface piceous, the abdomen rather shining and with 

 fine and feeble sparse asperities; legs moderately long, very slender. 

 Length (cf, 9) 13.5-16.0 mm.; width 5.8-8.0 mm. Arizona (Final 

 Mts.), Wickham pinalica n. sp. 



The species above identified from the female as macro, Horn, 

 satisfies the original description and was taken in New Mexico by 

 the same collector; it undoubtedly represents that species and, 

 assuming this to be so, shows that the figure given by Dr. Horn is 

 decidedly out of proportion, being much too stout and ventricose. 

 The type of quadricollis is also a male, but I have only females in my 



