324 MEMOIRS ON THE COLEOPTERA 



The species of Hyperplatys are really very numerous, though 

 at present almost wholly undifferentiated in collections, because of 

 the comparative uniformity of maculation; those which are defin- 

 able in my own collection may perhaps be recognized by the follow- 

 ing statement : 



Species of the Atlantic regions and westward to the Rocky Mountains; 

 femora all clavate, rather more strongly in the male, the posterior 

 relatively more or less visibly less so in the female 2 



Species of the true Pacific coast fauna; femora all clavate, except the 

 posterior of the female, which are slender and not clavate 15 



2 Elytra sparsely speckled with spots, generally black but brown in 

 maculata, and having on each a larger discal spot between posterior 

 third and fourth 3 



Elytra with spots of black, rather uniformly distributed throughout and 

 without trace of a larger discal posterior spot; middle coxae separated 

 by a third of their width to rather less than a fourth; basal joint of 

 the hind tarsi longer than the remainder 13 



Elytra uniformly dull smoky-black; middle coxae separated by about a 

 third of their width; basal joint of the hind tarsi shorter than the 

 remainder 14 



3 -Middle coxae very approximate, separated by barely a fifth of their 

 own width 4 



Middle coxae less close, separated by a third of their width more or less . 5 



Middle coxae unusually distant, separated by rather more than one-half 

 of their width 12 



4 Body of exceptional form, stout but with relatively much narrower 

 head and prothorax, in this respect somewhat as in femoralis, pale 

 testaceous; legs dull black, the femora bright rufous to beyond the 

 middle; ground vestiture consisting of small stout and closely de- 

 cumbent ashy hairs, not very densely placed; head dull, with a fine 

 entire medial stria, much narrower than the prothorax, the antennae 

 long, slender, pale; prothorax four-fifths wider than long, subparallel, 

 the spine aciculate and before basal fourth; punctures strong and 

 unusually close-set, the middle two of the four brown circular spots 

 large; elytra short, three-fourths longer than wide, parallel, rounding 

 and narrowing obliquely in apical third, the outer angle of the apex 

 dentiform, acute; humeri unusually angulate and widely exposed at 

 base; surface unusually coarsely, deeply but not densely punctate, 

 a little more closely on the more shining flanks, which are uniformly 

 rufous; spots large, circular, brown, the posterior discal relatively 

 small, obliquely linear; legs well developed, the femora (c? 1 ) very 

 strongly clavate, the posterior notably longer than the others, 

 approaching Anisopodus; fifth ventral scarcely as long as the fourth, 

 broadly rounded. Length (cf) 4.8 mm.; width 1.8 mm. Penn- 

 sylvania maculata Hald. 



5 Basal joint of the hind tarsi distinctly shorter than the remainder. 

 Body moderately stout, subparallel, feebly convex, the carina at the 

 line of flexure of the elytra strong; color pale brown, closely covered 



