yo 



OlMIIOCOMA riCA. 



CHtnln((uo 

 Nuinbur. 



.117 



31!) 

 320 



OrlKliml Number 

 Nuinbur. of Spec. 



F. I ST () F S 1' \]C I M KNS. 



Locality. 



When 

 Collucted. 



124- 



1 



A/iisi'iiiH (if ( 'oiinKtrafirc, Zolildtjii. 



Whence obtained. 



S.inilwicli IsI.iikIs. 



Saiidwicli Isl.iiiils. 



Sandwicli Islarnls. 



Sandwicli IslamlH. 



A. (Jam-It 

 A. (JaiTclt. 

 A. (JaiT(!(t. 

 A. Garrett. 



Nature of 

 Bliuclmeu. 



Alcoliolic 

 Dried. 



Opliiocoma pica Mii.i.. it Tkoscu. 



Ophinroma pi('.n^\v\.\.. h'V\n\>^c\\. .S).st. A.steridcii, p. 101. . 

 Ojihiorotuii lliiroltitd Mill, I,. & Tkoscii. 8yst. Astcridi'ii, p. 1(»2. 

 <)/)liioi-oiii<i sdiniii) \,\M.\S. Proceed. Hosloii So*;. Nat. Ili.sl,., VIII. p. 81. 



Special Marks. — Anns to disk ;is four lo ouo ; tlicy aro binidcd with 

 yellowish. Six arni-spiiics in the ;i(hilt, slender and (deuant ; iipixT 

 ones l()n<i;est, and as l()n<j; as the eoinhined lengths ol" three and a. hall' 

 to lour and a hall' under arm-plates. 



/)('scrl/)fi(ni of n SjH'cimcii. — Diameter of disk, 27"""' ; \vidth of arm 

 without, spines, 1"""-; length ol' arm ahont DO"""-. Month-jtapilhu six; 

 three on each side. Tool li-|)a|)ill;v^ irregularly jjiaced, extending nearly 

 to the inner end of the month-shield, the lowest ones smallest; al)Out 

 twenty-one in iiiiinhei-. 'I'eelh lixc, lowest one very small, and nearly 

 siirroim(le<l hy j)a|)ilhe ; upper one small, and somewhat ])ointed. 

 Month-shields oval, longer than broad ; length to hreadth, 2S) : 2. 

 Under ann-j)lat('S hroader lli:in long, regular, hounded Avithout and 

 within hy a ciirNC, on the sides li\ re-entering eniNCs; length to 

 hreadth (tenth ])late), 1.4:2. Upper arm-plales very regular, hounded 

 without hy a, clean curve, nearly oval, hnt llattened a little within ; 

 length to hreadth (tenth plate), 1.1 :2.1. Disk, ahove and on the sides, 

 finely and closely granulated, about 45 grains to a s(|uare mm., brachial 

 H[)a(;e.s below nak<'d • showing ininsually large scales, having a diameter 

 of .5"""". Arin-s|)ines six, remarkably slender, tapering, and regular; 

 lengtlis to that of under arni-])late, 5.2, (J, 5, 4.2, 3.8, ;12 : 1.4. Tentacle- 

 scales two, rather large and |)ointed. Color, in alcohol : above, very 

 daik pnr|)lish-brow n ; the disk ornamented with niimerons due radiat- 

 ing liiu!s of ytdlowish ; two yellowish specks at the base of each arm ; 

 about every other uj)per arin-])late is cross-barred with yellowish, the 

 base of the u])per spine having the same color; below, interbraehial 



