Ol'IIKJCOMA PICA. 



91 



spiiccs (laik brown, vuricd with yellowish ; yellowish spots between the 

 under ann-pl;ites. 



Varitilionx. — The arranp^oment of colors on the disk varies; somc- 

 liiiics tlie disk is wholly dai'k, or, again, only spotted with light yel- 

 lowish ; but tlie arms are always more or less h.'inded with liiiht. A 

 light mark on each side ol' Ibe luoul li-sliicid is very characteristic. 

 A young specimen, willi a disk of 1)""". bad arms 34'""'" long; there 

 wei-e five ai'm-spiiU'S. Another had ibur, and close to the disk five 

 arm-sj)ines ; the disk was to the arms as G:21. Jn younger specimens 

 tbc tool b-|)apill:D are of course fewer. 



Miiller c\: 'IVoscbei made the singular mistake of describin"; this 

 strongly marked species under two names, (). jncd and O. Uneolaia. 

 iioth descriptions are inaccurate; so nuich so that I described it under 

 a lliii'd name, (>. sftnnio. A glance at the originals m the Jardin des 

 rianlcs and tlie IJeilin Museum, w\as enough to remove all error. The 

 originals of (J. pica, in Paris, are dried, and about half growni. Disk, 

 I'V'"" ; arm, r)()"""- ; five arm-spines, of wdiich the upper is 3. 2"""- long. 

 Tbc original of (). Uneolaid (Berlin Zool. Mus., No. 951) is also not 

 ((uitc fully grown. The disk is 1 S"""- in diameter; arm, 58""°' long; 

 five rows of spines, whereof the upper and nuddlc ones are longest. 

 The specimens are dried, and arc from Aden on the Red Sea. 



LIST OF SPECIMENS. 



Ciitnloifno 

 N uiiibcr. 



OrlKitinl Numht-r 

 Number. ufSpuc. 



Locality. 



When 

 Collected. 



AVhence obtained. 



Nature of 

 Specimen. 



.•iJl 



.•{•_':s 

 .•i;t2 



XV.\ 



Museum of Comparatire Zoii/iu/i/. 



S;iii(l\vicii Islanils. 



Saiidwicli Islands. 



Saiidw'icli Islands. 



Kinnsmilis Islands. 



Sandwicli Islands. 



.lava. 



ScK'it'tv Islands. 



