218 Bulletin American Museum of Natural History. [Vol. XXXII, 



Ophiothrix spiculata. 



LeConte, 1851, Proc. Acad. Nat. Sci., Philadelphia, Vol. 5, p. 318. 



Another common Panamic species, this Ophiothrix, is represented by 

 only a small series, mostly in poor condition. 

 San Esteban Island, Gulf of California. 

 San Francisquito Bay, east coast of Lower California. 

 Station 5678. Magdalena Bay, west coast of Lower California, 13| fms. 

 Five specimens. 



Astroschema sublseve. 



Lutken and Mortensen, 1899. Mem. M. C. Z., Vol. 23, p. 187. 



This fine species is represented by only a single specimen, but that is an 

 adult in beautiful condition. 



Station 5695. Southwest of Santa Rosa Island, California, 534 fms. 

 Bottom Temp., 38.9°. 



Asteronyx dispar. 



Lutken and Mortensen, 1899. Mem. M. C. Z., Vol. 23, p. 185. 



The large series of Asteronyx in the collection fall into three groups, 

 representing species two of which were found by the 'Albatross' in 1891 in 

 her exploration of the Panamic region, while the third was taken by the 

 same vessel at numerous stations from California northward to Bering Sea. 

 It is interesting to note that no two of these species occurred at the same 

 station either in 1891 or in 1911. The present species, dispar, has a wide 

 range, extending from the Galapagos archipelago to southern California. 

 It seems to be a well defined species, easily recognized by the number and 

 appearance of the arm-spines. The specimens at hand range in disk- 

 diameter from 5 to 17 mm. 



Station 5689. Off Rosario Bay, west coast of Lower California, 879 fms. 



Station 5690. Off Rosario Bay, west coast of Lower California, 1101 

 fms. Bottom Temp., 38.1°. 



Station 5691. Off Pt. San Tomas, west coast of Lower California, 

 868 fms. Bottom Temp., 37.2°. 



Station 5692. Off Pt. San Tomas, west coast of Lower California, 

 1076 fms. Bottom Temp., 37.1°. 



