78 



OPIIIOCOMA ^THIOPS. 



LIST OF SPECIMENS 



Catalogue Oritrinal 

 Number. Muiuber, 



Number 

 of Spec. 



Locality. 



When 

 Collected. 



AThence obtained. 



Nature of 

 Specimen. 



1100 

 998 

 1 000 

 ]17G 

 1089 



2 



12+ 

 7 

 3 

 1 



Mil sen in of Camp 



Florida. 



Biv of Ciimma. 

 KeV ^Vest, Fla. 

 Tortiiojas, Fla. 

 Key Wi'st, Fla. 

 Toi'tiiLjas, Fla. 

 Cape Florida. 



Florida. 

 Cape Florida. 

 Jeroinie, llavti. 

 St. Thomas, '\Y. I. 

 Tortujras, Fla. 

 AVest Indies. 



Florida. 



Florida ? 



Key West, Fla. 



aratice Zoology. 



Prof. Ao;assiz. 

 Capt. CoLitliouy. 

 T. Lvman. 

 J. E." iVIills. 

 J. E. IVIills. 

 J. E. INIills. 

 J. E. INIills and 



G. ^^'urdenlan. 

 Prof. Ajrassiz. 

 G. Wiirileman. 

 Dr. D. F. Weinland. 

 A. II. Riise. 

 J. E. Mills. 

 University Museum, 



Copenhagen. 

 G. Wurdeman. 



Feb. hS.^O. 

 Mar. 13, '58. 

 ]\Iar. 6, 18.58 

 Ap. 14, 1858. 

 Apr. 1858. 



1858. 



Mh.13-19,'58 



Alcoholic. 



Smithsonian Institution. 



St. Thomas, W. I. 

 Florida Keys. 

 Tortugas, Fla. 

 Tortugas, Fla. 

 St. Thomas, W. I. 



Mh. 18, '58. 



Dr. Holder. 



A. H. Piise. 



Dr. Whitehurst. 

 A. II. Riise. 



Dried. 



u 



Alcoliolic 

 Alcoholic 



a 



Dried. 



Ophioconia sethiops LijTKEN. 



Ophiocoina mthiops Lutken. Addit. ad Hist. Oph., p. 145. 



Special Marks. — Large species. Greatest width of arms more than 

 three times as great as the length of the under arm-plates. Upper 

 arm-spine thickened. 



DescrijMon of a S2}ec'wien. — Diameter of disk, 31°"°- ; outer edge 

 of mouth-shield to outer corner of opposite mouth-slit, 13°""' ; greatest 

 width of arm without spines, T"""'; length of arm, 190"™'; distance from 

 outer edge of mouth-shield to inner points of tooth-papillae, to that 

 between outer corners of mouth-slits, 5.6 : 6.3. Eight broad, rounded 

 mouth-papilla) to each angle of mouth ; of these the one next the outer 

 one usually broadest ; besides these, a row of three or four minute 

 bead-like mouth-papillas, just below and outside of the tooth-2Dapilla9, 

 with which they might properly be classed. Tooth-papilla3 about 

 eighteen, irregularly disposed, short, stout, rounded, the two or three 

 lowest bead-like and much smaller than the rest. Teeth four, shaped 



