,S2() 



I'liociCKDiNca or riiic national musuvm. 



.X 



a 



l^'irst. \r.UY of ;mi1;<iiiii!I' sliorl,, st,(Mil, ('.(mHisl.iti}^' ol' lour JoiiiiH, Wns first, 

 joiiil/ bciiii^' Mic l(iii<;o>sL ISocoimI p:i,ir of iiiitciiiiiM' more sIciuUm', ii lil.tUi 

 l()nj;(M-, coiisisiiiif;' <)(■ (bur joiiils, llio lirst Joint beiii^ 

 loiif^cst, iiiid ;i nidiiiuMitjiiy llji^cllum. JOycs Hiiiiill 

 iiiid piMliiiK-uliiU'd. 



Tho lirst se{;inoiit of" the thorax is coniliuiiil with 

 the hciid. Tho second, third, fbuith, and filth hc^- 

 iiKMils incn^iisi^ slightly in hMijj^lii; tho fifth :iii<l sixth 

 jiro jibont o(iiiiil; tlio s«iv«Mdli is not <|uito so lonfjf ;iH 

 tho i)r<')oodinj;' one. 



'V\\Vi id)<h)ni(Mi is ooinposod of (ivo so{jfnionts, tlio 

 first thr(M^ of whioli ;^r(^ subtMiual; liM^ Iburtli is siiort, 

 iiboiil' hiilf as U)n^- as any of (ho others and also 

 njirrovvcr; tho (orniinal sofj^nuMit is as h)ng jis the 

 two |>ro<'('.dinj;" oiu^s (of^ef iior, and is roniMhMl pos- 

 teriorly, with a> sli/^ht median notcli. The S(^gnients 

 of the abdomen decrease in widtli {•radually from 

 the first to tlie terminal segment. ^Plu^ terminal fila- 

 mriits ar(^ seven Jointed and sinf^le brancln^d, and 

 are furnished at their extremities with a, few lonj;- 

 hairs. 



The first. |>air of l(^.l;s are stout ainl ('Inflate; the 

 jM'opodus is produ(',e<l info a. stnni^' immovable finj;(ir, 

 iri'e^nlai' in slia.|)e, havinjjf its eentral i)ortion raised 

 and trun(•at(^ on its ui)per surface, which is ilistinc/tly 

 serrate. Tln^ dacfybis is likewise si^rrate on its inner 

 surfa(!e. IMie otluu- le;;s aie slender, with a gradual 

 increase in stoutness. 



doloi" bi'own, marked in some si)ecimens with a. 

 darker bi()wn,a.nd having oval pa(<'hesof lh(^ darK(^r (loloron the In'ad. 

 Kyska, Harbor, Alaska.; Mr. W. II. Dall collector; depth, (> to H 

 fathoms. 



Ti/pv.—No. Ii2r>(»;{, I J .S. N . M . 



/ 



Fid. I.— 'rANAlH AI.AH- 

 (JICNHIH, NICW Hl'IlWillCH. 

 X 8. a, IIDIIHAI.VIHW; 

 l>, I.AHT TW) .HUNTS 

 OK I.ICO OK TlIK Kliwr 

 I'Alll. 



11. FLABELLIFERA. 



ANAI.YTICAI, K|.;Y i'O IlIK lAIMll.lMS 0|.' KI.A IIKM.I KICKA 



a. Plooii <i()nHis(iin^ oC nix hoj^iiumiLh. 



b. llropoda witli ono ol' t.lu^ Itnuiolu^H nhiiosl. oliHoloto or riiiliinoii(.a.ry — not, laiiK^lli- 



form Fuiiiily II. liiMNomiD.i': (p. S21). 



/('. llropotliii wiMi bot.li braiichoH (I(^v(^l()po(1 ; mostly liinu^llilbrin. 

 <!.' MiixilliptMlH with (.ln^ palp IVtMi, i\w inargiiiH ol" tho last two Joints nlon^ or 

 leas autoue, never ^llnlish(^(l witli IiooKm. 



'Tho ("our points foHowin^ /»' aio taiktin from I laiistMi's analytic key »f the Ciro- 

 laniiia« (Vidonsk. Solsk. Skr., (>th stvr., natiir. Oi*- math. Mil. V, 181)0, p. lUT), as trans- 

 latiHl by Stebbinji', Hist, of Crnst., 18!t;$, i)p. :tl(l, Ml. 



J 



