328 Verrill, Notes on Radiata. 



Ophionereis Xantusii Lyman, Cape St. Lucas. 



0. annulata Lyraan. 



Ophiothrix spiculata LeC. 



0. dumosa Lyraan, Cape St. Lucas, San Diego, Guayamas. 



ASTERIOIDEA. 



Astropecten Orstedii Ltitken ! 



Nidorellia armata Gray ! 



Oreaster occidentalis Verrill, Cape St. Lucas and Panama ! 



Linckia unifascialis Gray ! 



Do. var. bifascialis Gray ! 

 Ophidiaster- pyramidatus Gray ! 



Heliaster microbrachia Xantus, Cape St. Lucas and Panama, 

 jff. Kuhiniji Xantus ! Cape St. Lucas. 

 Asterias sertulifera Xantus, Cape St. Lucas. 



ECHINOIDEA. 



Cidaris Thouarsii Val. ! 



Diadema Mexicana A. Ag., Cape JSt. Luca^s and Acapulco ! 



Eclmiodiadema coronata Verrill, Cape St. Lucas! 



Echinocidaris s tellata Aga.ss\z, Margarita Bay ! Cape St. Lucas ! Guayamas, 



and south to Paita, Peru ! 

 Psammechinus pictus Verrill, Cape St. Lucas. 

 JSchinometra Van Brunti A. Ag., Cape St. Lucas and Acapulco ! 

 Encope sp.* 



Pygorhynchus Pacificus Ag., Cape St. Lucas and Acapulco ! 

 Metalia nobilis Verrill, Cape St. Lucas and Panama ! 

 Brissus obesus Verrill, Cape St. Lucas and Gulf of California ! 



Species given in this list without special localities extend as far 

 southward as Panama or beyond. Of the 27 species here recorded, 

 1 7 reached Panama ; • 3 have been found elsewhere only at Acapulco ; 

 2 only at Cape St. Lucas and in the Gulf of California ; and 5 have, as 

 yet, been recorded only from Cape St. Lucas. The only species known 

 to me from Margarita Bay is Echinocidaris stellata, which has also 

 the most extensive range southward. Ophiothrix dumosa, alone, is 

 included both in this and the preceding list. 



List of species found at Acapidco, Mazatlan, and in the Gulf of 



California. 



Ophiuroidea. 



Ophiura Panamensis Lyra., Acapulco and southward ! 

 O. teres Lym., Acapulco and southward ! 



* Since described as Encope Californica V. Common at La Paz, J. Pedersen, — Reprint. 



