6 LIST OF THE OPHIURID^ AND ASTROPHYTID.E. 



AsTBOCNiDA isiDis Lym. Barbadoes % H. E. 



AsTROPORPA ANNULATA Ltlc. Barbadoes ; 100 fathoms. H. E. 



AsTROGOMPHUS VALLATUS Lym. Sombrero Key, Florida; 128 fathoms. W. S. — Off Sand Key; 



270 fathoms. W. S. 

 Ophiocreas LUMBRICU3 Lym. Off Sand Key; 75- 128 fathoms. W. S. 



The above list of seventy-six species, whereof nineteen are new, may be called a remarkable 

 one. It embraces depths from the littoral zone to 424 fathoms, the greatost number of interest- 

 ing things having been brought up in 100 fathoms, off the Barbadoes. Thence came the simple- 

 armed Astrophytons, thus far chiefly characteristic of the West Indies, though exploration may 

 find others elsewhere, since already we have an Asfroschema from the Great Ocean, Astrotoma 

 from the Straits of Magellan, and Astronyx from North Europe. The West-Indian fauna is 

 extended to Patagonia by OpMoceramis Jamtarii. That of extreme South America shows a 

 resemblance to the northern, since Ophiactis magellanica, Ophioglypha Lymani, and Astrophyton 

 Pourtalesii are comparable to 0. Ballii, 0. ciliata, and A. Lhickii of the opposite zone. Other 

 species, however, such as Astrotoma Agasskii and the Amphiurce do not bear out this resem- 

 blance. From Chili comes an Amphmra not to be distinguished from A. squamata of the north- 

 em seas. The genus Opldoscolex, thus far known from polar waters only, finds a representative 

 in the West Indies. In my generic distinctions, especially tliosc which centre about Ophiacantha, 

 I desire not to be held strictly accountable : the classification needs a revision whicli wo have 

 not yet materials to warrant. 



