﻿OPinOCOMA SCOLOPENDRINA. 

 LIST OF SPECIMENS. 



87 



iility. 



Museum of Comparalice Zoology. 



Kiii^^sinills Islaii.ls. 

 Kingsinills Islands. 

 Zanzibar. 

 Zanzibar. 

 Zanzibar ? 

 Mozambique. 

 Society Islands, 

 lies Seychelles. 



Mr. Cheney. 



A. Garrett. 



A. Garrett. 



A. Garrett. 



A. Garrett. 



A. Garrett. 



E. Ropes. 



Capt. Webb. 



Salem Normal School 



C. Cooke. 



A. Garrett. 



Jardin des Plantes. 



Dried. 

 Alcoholic 

 Dried. 

 Alcoholic, 



Ophiocoma scolopendrina Agass. 



Ophiura scolopendrina Lamk. Hist. An. sans Verteb., II. p .'J44. 



Ophiocoma scolopendrina Agass. Prodrome. Mem. Soc. Scien. Nat. Neuchatel, I. 1835. 



Ophiocoma scolopendrina Lutken. Additamenta ad Hist. Oph., p. 163. 



Ophiocoma molaris Lyjian. Proceed. Boston Soc. Nat. Hist., VIII. p. 79. 



Special Marhs. — Arms five and a half to eight times the diametei' 

 of the disk. Spines ringed with darker and lighter ; upper one longest. 

 Granulation of disk even, and rather fine. Color, grayish or mottled. 



Description of a Specimen. — Diameter of disk, 24'"°'-; width of arm 

 without spines, 4°'°'' ; length of arm, 137™"'. Mouth-papillae eleven or 

 twelve, the mnermost two much the smallest. Tooth-papillas seven or 

 eight, rather large. Teeth four, upper one narrowest and sharpest. 

 Mouth-shields longer than Inroad, much narrower within than without, 

 pretty regular ; bounded without by a curve, within and on the sides 

 by straight lines ; length to breadth, 2.6 : 2. Side mouth-shields small, 

 triangular, lying on the sides of the mouth-shields. Under arm-plates 

 rather broader than long, hexagonal, the outer side and outer laterals 

 being more conspicuous than the corresponding sides within ; length to 

 breadth (tenth plate), 1.5 : 2. Upper arm-plates broader than long, 

 quite irregular, varying in breadth according to the encroachment of 

 the upper arm-spines ; oval, with pointed lateral corners ; length to 

 breadth (seventh plate), 1.5 : 3.4. Disk regukrly, but rather loosely 

 granulated, 20 to a square min. ; below, interbrachial spaces granulated, 

 except a band along each genital slit. Arm-spines near base of arm, 

 alternating four and three, slender, elegant, little tapering, somewhat 



