328 Verrill, N'otes on Radiata. 



Ophionereis Xantusii Lyman, Cape St, Lucas. 



0. annulata Lyman. 



Ophiothrix spiculata LeC. 



0. dumosa Lyman, Gape 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. hifascialis Gray ! 

 Ophkliaster 2}yramidatus Gray ! 



Heliaster microbrachia Xantus, Cape St. Lucas and Panama. 

 If. Kubinijl Xantus ! Cape St. Lucas. 

 Asterias sertulifera Xantus, Cape St. Lucas. 



ECHINOIDEA. 



Cidaris Thoioarsii Val.! 



Diadema Mexicana A. Ag., Cape ht. Lucas and Acapulco ! 



Echinodiadema coronata Verrill, Cape St. Lucas! 



Echmocidaris stellata Agassiz, Margarita Bay ! Cape St. Lucas ! Guayamas, 



and south to Paita, Peru ! 

 Psammecldnus pictus Verrill, Cape St. Lucas. 

 Echinometra Van Brtmti A. Ag., Cape St. Lucas and Acapulco ! 

 Encope sp.'* 



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

 Metalia nohilis 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 hei'e recorded, 

 17 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 Acapulco, Mazatlan, and in the Gulf of 



California. 



Ophiuroidba.. 



Ophiura Panamensis Lym., Acapulco and southward ! 

 0. teres Lym., Acapulco and southward ! 



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



