^"ikim!"'] Pii()ci:i:i)iN(iH OF riiio naiional muheum. 251 



Scleroplax granulatus. 



Carjipaco subpciitaffoniil, liaid, .<jii!iiiul;it(^ ;iii((ni<>rly and n(^ar tlie 

 inar.nins, pniicliito (iIscwIkmc; ;|i {41:11111 l;ii(^(l lidji'c <I(^(iiM^H flic, hil- 

 <'riil iniiri^iii. I^'ioiil iiiiriow, piodiiccd, slii^lilly coiincx ;is s('<'ii from 

 ill)<>V(\ <)il»ils ii(';iil>circillai', (\v<'-«liillvS very slioil, iiiid thick; iiiilcii 

 miirs iilriiosi, lr;iiisv('is«'. Mciiis of iiiaxillipcds ^TMiiiiliilc, willi ;i loii^^i- 

 tudiiiiil, \viii;i; like cxpaiisioii on Mic iiiiici' iiiai'^iii, and another on Wm", 

 ontei' niai'.i;in, w hicii hcc.oincs nairowcr at liic pi'oxinial end. Talpus 

 triarticnhitr, lai<;(', the penult joint longer than the nierns, (he ulli- 

 inatc: joint articniateil neai* the proximal end of the inni^- inar^in of (he 

 peniiltiniale and aJ)ont (M|ualin width lo (he adJaiMMit pi»i-tion of th«>, 

 p(Miul(iina(e; l»o( h joiid.s are Ion*;', \vi(h a longitudinal median depics- 

 sion, and a IVinj^e oC very lon<f hair jxu'deiini; (he ex(remiti«'.s, (he last 

 join(, sli^hdy ovcuTeachinj^" (he, o(,her. Abdomen ol' CemaJe v(M'y smoodi 

 and shiiiin<'', ('rin;:;<Ml wi(.h hair, no( reaehin;;' beyond th<' Hternum. 

 Ciielipeds in the, feniale, {iiiiiiulale, weak, shorlcr than (Ini and)ula(<>ry 

 h'f^s; hands broad, somewhai eompiessed; da.(^(yl.s ,s(ronj4ly eurv<'d. 

 Ambulaiory lej^s slender, .i;ranula.(e, (In^ third pair lonj^esl, the seeond 

 longer (ha-n the. (irsi, the lirsl, pair weakest ; (lu^ join(s nari'ow, flat- 

 tened; the dae(yls are \ (My slend<M', almost slraii^ld, and e((ual in 

 length (he pro|)odai ioin(s. 



Leii^lh, (J; wid(h, -S niillimelers. 



ICnsenada, Lowei- CaliCornia, (J. if. Oreult; (hree females (171!>7). In 

 the same \ iai is ai fran'inent of a male, apparently the same species, in 

 whi<'li tiie abdonn-n is narrow, laperini;' \'ery gradually (o the broad, 

 terminal se^nienl ; I bird, I'onrt h, and lift li segments partialis' anrh> losed. 



Subfamily Aj»'ni lONoiJN A'i'lllN /I':. 



I'':uiiil.v AslJiciio^^iiiit.Jiid.r Sliiii|i.srm, I'rof. Acid. N;it. Sci. I'liil.i., \, jt. 107, !Hr»8. 



I^(^semldin<; Tinnot lierina*, but (he ischium of (he exIiMiial maxillipeds 

 is longer and more distin(;tly <levelo])ed. The last, pair of aiid)ida(ory 

 lej^fs is no( rmlimentary or abortive. In this family are included the 

 J4«'nus Astliiiioffmitlius and (In; followinj[jf 



(l.niis OPISTHOPUS. 



(^arapacc^ nsnally lirni and unyieldin;^; smooth, sul)quadrila(eial, re- 

 f^ions not detined; latcial maij^ins i'ej;nlarly arcnated, JOpistomc; veiy 

 sh()r(. Abdojuen s<'ven jointe<l, in Ihcnjalcnot eoverinj^ the sternum 

 be(,ween (he coxa- of (he last ambulaiory lej^s. ICye ixmIuucIcs sIkuI. 

 Aidenna; snndl, situated a,(. (lie inner orbiial hiadis; basal joint snnill. 

 Antennula' oblitpu'ly pliciit<'d. I'^xlernal maxillipeds wi(h (he iscliium 

 well developed, the nu-rns broad, the palpus three Jointed, (he uKinndc 

 .join( articula(ed on (he inner side of (he |ienul(ima(e. ('helii>eds mod 

 erate; ainbuhdcny lejis sidM^jual in lenu'th, Joints flattened. 



