TiiK \a:.\v hkkti.ks. 1117 



1 1 (lid I iiuni. S. S. — " ("ry|)t()c('|)li;iliM(iniiii llorcjilis- Aiiic'ric;r diny'- 

 iioscs ciiiii s|)('('i('l)iis ii(i\is .Musfi I jccoiil iniii, " " in .l(iiii-ii. 

 Phil. Acad. Nat. Sei., 1. 1S4!), 245-2G5. 



Sii/j'riaii, E. — "TNToiKiiii-apliic iiiul Kritsdics N^cr/cicliniss clcr 

 Nordaiiu'i-ikaiiist-licii Ci-yptoccphali, " in Liiiiica Entomlo- 

 giea VI, 1852, 1!)S-;51.S; VJl, 1855, 1-2:58; XII, 1858, 343- 

 409. 



LeContc. — ''('oiitrihuliitiis to tlic Cdli'oplcra of the United 

 States," itt Trans. Aiiicr. Knl. Soc, VIII, 1880, 195-209. 



KEY TO GENKK.V OF CKYPTOCKiMIA l.INI. 



a. Tarsal claws siiiiiili': lar,i;ci'. :; or iiinro luui. : snrr.Mcc sculpturo roii,i;Iu'r. 

 h. Thorax not luaruincd Imt crcimlatc at Itaso; front rciuora not evi- 

 dently stouter tlian liiiKJ ones. 



c. Front edj?e of think of thorax, hcneatii liic antenna', toothed or 



shuiate. XIII. P>assabetis. 



(•('. Front edge of flanks of thorax straij;lit. XIV. ('kyitocephahs. 

 bb. Thorax raai'gined at base, not crennlate; front femora distinctly 

 stouter than hind ones. 



d. rrosternuni flat in front, depressed heliind. XV. (liniuim s. 

 dd. Prosternuiu feebly channeled ; rows of punctures of elytra usually 



much confused. XVI. Pachybrachys. 



«(/. Tarsal claws appendiculate, /. c, with a square dilatation at base; 

 smaller, less than 2.."i nnn. (except in MointvJnis) ; surface nuieh 

 smoother. 

 e. Presternum wider than long; form rcjliust, rounded; antenn;e stout, 

 rather short. XVII. Monachus. 



cc. I'rosternum longer than wide; form more elongate, cylindrical or 

 oval. 

 /. Antennal joints (> to 11 wider; form cylindrical. 



XVIII. DiACHUS. 



//. Antennal joints 7 to 11 wider; foi-m oval, convex. 



XIX. Triachus. 



XIII. Bassarei^s Ilald. 1849. (Gr., "a fox.") 



The mcui])cfs of this si'eniis are separated froni tliosc of Crijpto- 

 cephalus, which they most closely resemble, by the character given 

 in key. The males have the pi'osterniim armed at middle with a 

 large, erect compressed process; fii'st ventral with a large flat plate 

 at middle, the hind angles of Avhich rise into acute processes or 

 spines; fiftli ventral broadly concave, witli a crest of curved erect 

 hairs each side of middle. Female with fovea of fifth ventral large, 

 deep and circular. The followijig species and varieties have been 

 taken or should occur in the State. 



