XOETH AMERICAN COLEOPTERA 31 



Eostmin more ^nder. aboot ai» lamg. mr liiingri Ham tfe thwi ■ i £cT>>be» 

 najToir. sharply de&meU aad b«t ^gktij e^amiesi fasattymix. 

 Plate I. 64. 



Elyrral interstices wider than tiie paaraires : sexes alike n fer^ 

 Btjerrum cylindrical : le^ 1ob«^ aod slender: ans»ior iaasi of % bos feebly 

 broader than hind tarsi. last joins as lamg as ike odiss es^bined. 



Plate L fi?5. 3 and 35 HTF]^iCH>BS Grosp 



Rostrum broader and defsessed at bose^ {aeiteia Py shim wliit ee^^essed 

 toward the tip. Legs stooter : tiliis deaticvlase iMervoOy. aaiGsiar 



tusi of ^ dilated. Plate L i^s. 6 and Ol TJI£^ Gswsp 



Elytral interstices narrow. iNmetares Ixs^. Sax'aSaaaz sexes dBSFrroflar 



Plate L figs. S. 9 and 10 HOBXII Grcwip- 



Boetrum stoater. shorter than the thorax, senerally ^aii^Kd aboTe. Seiwots 

 expanded and ill denned poserioriy except pmtvMms). j^ate L 

 ngs. 1 L 12 and 15. 

 Sqoamoee species : elytra not clothed with a Sae sqnisBlaBe. or kair like 

 pabescence. 

 Upper margin of antennal «rooTes diieesed tovaids the spfier part of tlbe 

 eyes : scape reaching the a|>|i^ aatexiox' ^oocgia 9i tint iit Plate 

 L ass. 11 and 1± 

 Thorax cuarseiy ponctate: posterior tit»e of ^ wiih a bc«^ a£ ions. 

 flyin? hairs along the inner raargiB. Plate L fig. 114. 



SSLTTMBIS Groop 

 Thorax very finely panciured, hind til»e oi % witkoK a farasb oi lamg 



flying hairs SPABSUS Grwip. 



Upper margin of :VQtennaI srrtioves directed toward the middle of the eye : 

 scape of antenna? shorter and attaining the anterior margin of the 

 eye. aboat its middle : densely scaly : each elytral interstice with a 



row of setse. Plate I. fig. 15 * HTEtTELLITS Groap 



iTore or less pubescent above : anterior taia oi % d^tinctly iilitai : alter- 

 nate interstices of elytra above with a row of seuE. 



HUMIU5 Groap 



SOLLTlS Groap. 



The species comprising this gp.^up form a namral crsuasidon to Lis 

 tronotus. and are readily recognized by the characters given in th*^ 

 table. They are densely covered with - . '-' ' 



scales. The antenna? rather stout: iir;-: - 



turbinate, second aboat one-half longer than the former. foDowing 

 joints gradually wider, seventh rather cUi!«ely united to the o';.':. 

 Legs rather slender : tibise. especially the anterior ones. incurvir>i :i: 

 apex, not denticulate internally. All the tarsi dilated : third joint 

 rather broadly bilobed : fourth shorter than the others combined. 



The species are distinguished as follows : 



Elytral sets? very small, inconspicuous : thoracic panctiires moderate. 



EUytra with a dark, denuded fascia: thorax scarcely wider than Ions 



I. <»olnta<». 



Xo elytral fascia : thorax distinctly wider than long- .:^ iailisiiuda'i. 



Elytral set* stoat, very evident: thorax coarsely eribrate. S. *r>ptop<». 



