06 CKVMiS OF FAMILY MMin.F. KATHIU'N. 



ChioiKEcetcs Bohiiiigiaims Stimpson. 



Chionirvttt's Hchriiuiiiuuis Stimpson, Froc. liosl. Soo. N.il. Hist, \ i, SI, VtA^.. 1S57; 



lM>st. .Joiir. Nat. Hist., m, I I!». 1S:>7. 

 l\loi>lu{ilitti /'(•//(i.tii CuMstircKiM , Aiiliiv fiir Niitm\m>sfhiilili', wii. ltr>. Tat", i, li.u. 1. 



(iors(;i'rkor h;is ii'ivcMi ;it» cxri'lliMit liii'iirc ol'tliis s|n'('it\s in the Arcliiv 

 fiir NaturjiOvSt'liu'lito lor F^r)(i, Uiil his pjjxM (l(>(>s not nppcar to liavo 

 bctMi publisluMl bcrorc April, ISoT; our iiaiiu' li:is (liorot'oiv priority. 

 Tlio iMitoinoloiiist (>f IhmUh doos not sctMu to li;i\o bocii iicqiuiintod 

 with Ivrovci's li'ciuis ('hioiKirctcs, lo w hiili I lie sprcics i't>rt;iiiil> boloiigs; 

 in l';U"t it is most rloscly iillicd lo (lu> l.vi)*' ('. opilio. 



This spot'ios was t'oiuul in luMirinii' Straits, and uoitliward as far as 

 tho oxpt'ditioii piMU'tratcd ; many sporinu-iis having bctMi (biMl^rd by 

 (,\ipt. K'odu'crs. It also oconntMl t(» sonthward of tht> straits, as far as 

 Mativi Ishind. It is I'onnd only in dcop watrr, and on bottoms more 

 or less mnddy. In a li\ in^" stato it was«»t"a liiilit brick red »'(dor above, 

 ofton iridosriMit ; bolow, yoUowish-w hito; sides ot" fei't shining' wliite. 

 The posterior leet are short. The dimensions «)f theeara])a\ of a Iary,e 

 female art'^liMiuth, 'J.oT; brtMtlth, L'.T'J inches. 



In (lersta'cker's tii^nre the snrt'aee o[' the earapax posteri«)rly, and 

 the npper sides oi' the and>nIatory feet, are represented as inneh more 

 rnjiose than in any ol" onr specimens. 



Clii<tiiai-(i(s is e\ idiMitly nearest allied to Ih/ds, although i)robably a 

 his/her form. In yonnj;' spci'imens the resemblance to lh/<is is'easily 

 noticed. //(/('•>■ c/nVcM.s'/.s' shon Id probably bcloni;" toil. It has consid- 

 erable resemblance in general appearance to Stddcin oi' the opposite 

 extremity of the .American continent, o( which it may be eonsidered 

 till' analogue. 



Hyas latifions 8tiiniisi>n.» 



//_i/<iN (■(>iir(7(i/«,'* Stiuipson (^i\oi\ l.oarlil, Host. .lour. Nat. Hist.. \ i, p. ir>0. 1S,">T. 



This species tlillers t'rom II. ronrrtdfiis oi' [ho Nt>rlh .\tlantic mi the 

 tbllowinii' charaeters, whii'h arc lonnd to be constant npon examination 

 oi' nnmcr(»ns specimens ol' both forms. Th(> body is thicker and niiuh 

 bri>adei anttMiorly ai'ross the i>ost orbital apophyses; tlu> an.ules are all 

 more obtnse. The dorsal snrface is marked with fewer tid>ercles, 

 which are also mm-h larger and more obtnse, most o{' thembeinu' rather 

 swi'lliiiiis than warts. Tln> rostrum is shoiier and less acntt>; and the 

 superior tissurtM)f the (»rbii is always cIosimI, its margins t)verlait[)ini;. 

 It is subject to ct>tisiderable variation in some of its characti^rs, par- 

 (icnlailN in the uieater or less approximation o( the t'orks of the ros- 

 trum, which may bt> so closel\ appressed against each other as to over- 

 lap, or may diver<ii> so as {o leave a narrow V shaped space between. 

 rin'\ divertre niost in the yonnu. The feet and interior surface of the 

 bi>d.\ ari> diMisely hirsute m some iudividiuils ami (piite sntooth in t)(bers. 



*K(piiv!»l(>ut to CliioHarctts oi'ilio y'*- Fal»rioiiis^. — M. J. K. 

 t Soo l>am> (>!'. 



