NftRTII AMEIlirAN rOIiKOI'TXRA. 71 



Aiitorior coxal oiivitics close'l l)oliiiiil; tMr-i ikiI IhIm'iI lioin'iitli, willi llio fourlh 



.i"int Hiiiall I. SILVAXIXAK. 



Aiitci-iiir <'((.\al niviljes opi'n heliind : iriiixillii voreil by coriieoil." pl!itc>. 



II. I'ASSANM>I!IXAK. 



Maxillue exposed III. (TCPJI .VAK. 



Anterior I'oxal cavities closed hehiiid; tur.si with ilii' tliinl joint lolied 



Fourth tarsal joint not smaller ihiin tli(> tliird IV. IIKMITKl'MXAK. 



F<iiinli tarsal joint very si nil V. TKLKl'lI ANIXAE. 



Siih-lainily I. -SILVAXI XA K. 



Tar.si itciitiiimTou.s in botli .'^cxo. Fourtli joint very .siniili. .Mii.xiiliu' 

 exposod. liiuiiiii entire, i»r .■^iiolitly cniaroinatt'd, rarely hiiulied. Aii- 

 tennae terminated by a .small, Imt distinet, elnh. 



Two oenoni jin- indieatcd a.s t'oiiow.-i: 



Club 111' iMiicniiiii' Inriiii'd liy aliriipl I'lilariicnicnl of last llircc joints. 



KilTnniis. 



Olill) of iiiili'Miiai' tiiniii'd liy Kradiial (Milari;i'Mii'iit of Juints iVnil!<lil>iUM. 



KIIA'AXUN Lair. 



Body more iir less <d<itii;aled. soiiiewlial <lepressed. Labnim shorl. Mandibles 

 short, and provided with a densely eilialed membrane. Lasl joint of palpi fjrad- 

 ually attenualeil. or obeonieal, and Irunealeil slii;lilly at tliu exiremily. Head 

 sub-quadrate. Eyes small, rounded and coarsely ijranulaled. Antennae, wilb 

 joinis one and Iwo, larger: ihrei' lo seven smalli'r. -ub-ecpial : eighl, smalli'st: 

 nii'.e to eleven, forming a loose club. Elylra e|oiij,Ml. d ; sides parallel, or slii;htly 

 eonvex, not marKineil. Tarsi with first joini lame: fc.urlb very small. Klylra 

 eoverinj; entire ab<lomeii. puni'lalo-slriate. 



Tlie .speeies of tliis iremis are .xmali, tonnd nnder Ijiirk, or in articles of 

 eoinnierce. and many of tliem are eosmniiolitan. All are jninetured : tlic 

 imncture.x on the elytra are circular ini]iressions (d' ratliei' lariicr .size, and 

 are arraiiiicil in rows, so as to present, nnder low inautiilyino; pow(U', the 

 apjioarance >>{' striae. There are in adilition to these rows of punctures, 

 re;:ular lines of setae, which, in oend-al. are short. reciiniheiU and hristle- 

 like. hut which in some ciises become so lonj; and slender as to constitute 

 pubescence as in .V. rt'cfus. 



'I'he followini:' arranuenKJUt may be adopted at present, there beiniz two 

 very distinct divisions : 



A. — Lali'ral edi;es of prol borax stroiii^ly and acutely dentate. 



(.enae lar;:;eand distinct I. ISUriuaineilsiM. 



B. — Lateral edges of prol borax not dentate, finely sranulato ; srenae very small, 

 or invisibli'. 

 Protborax as loni;, or longer than broad ; sides more or loss sinuate. 

 I'rothorax stroni'lv narrowe<l bidiind. 



