344 MEMOIRS ON THE COLEOPTERA 



any trace of costse; head flat, gradually sloping above and with small 

 shallow dense umbilicate areolae, two-thirds as wide as the prothorax, 

 the latter fully three-fourths as wide as the elytra, hexagonal, widest 

 and laterally more or less evidently subangulate at the middle, the 

 sides thence equally oblique and nearly straight apically and basally, 

 the base evenly and strongly arcuate betwee'n the angles, which are 

 obtuse but sharply defined; surface very evenly and moderately con- 

 vex, with relatively rather coarse deep close-set punctures, the inter- 

 spaces with partial opacity and some minute punctulation, which is 

 very unevenly distributed ; apex feebly sinuate, slightly narrower than 

 the base and subprominently arcuate medially; bead along the side 

 margins extremely fine; scutellum with rather coarse shallow annular 

 areolae and partial opacity; elytra three-fourths to four-fifths longer 

 than wide, the humeri broadly rounded externally, the sinus long 

 and shallow, the mes-epimera tumid and very conspicuous before 

 the humeri and tomentose along the latter; punctures on the flattened 

 opaque discal part close-set, in the form of very elongate incised 

 annuli, smaller and shorter apically, those of the flanks rounded, 

 deep, close-set and moderately coarse along the upper or polished 

 tomentum-bearing part, and shallow, variolate and rounded on the 

 lower or non-tomentose part; pygidium convex, with close-set and 

 deeply incised, umbilicate annuli; sterna and hind coxal plate and 

 abdomen with similar incised annuli, which are rather more separ- 

 ated, the punctures medially sparser, smaller and deeper; femora and 

 tibiae strongly punctate, the anterior as in the preceding, the hind 

 tarsi three-fourths to four-fifths as long as the tibiae. Length 12.0- 

 13.8 mm.; width 4.2-5.0 mm. Arizona (Baboquivari and Santa 

 Rita Mts.), also two examples from Dunn and Levette. 



angustus n. sp. 



If the figure of ineptus, given by Horn, is even approximately 

 correct, angustus is in no way closely allied, being much more 

 slender than that species and with the prothorax barely wider than 

 long. No tomentose spots of any kind are mentioned in describing 

 ineptus, but these are conspicuous in all my specimens of angustus 

 and the lateral tomentose border of the pronotum is particularly 

 noticeable. The above description of ineptus is derived from the 

 original and also from the published figure. 



Macropodina n. gen. 



This genus is not closely allied to Psilocnemis, as thought by 

 LeConte, because of the very different habitus of the body, which 

 is oblong, much depressed and with radically different structure of 

 the head and legs, more particularly the anterior tarsi, which, 

 apparently in both sexes, have the last two joints abruptly much 



