Verrill, JVbtes on Radiata, 329 



Ophiocoma cethiops Ltitk., Acapiilco and southward ! 

 0. Alexandri Lym., Acapulco and southward ! 

 Ophiothrix dumosa Lynn., Guayamas to San Diego. 



ASTERIOIDEA. 



Nidorellia armata Gray, Guayamas ! (Bost. Soc. N. H.) 



Linckia unifascialis Gray, Acapulco and southward ! 



Heliaster sp.={I{. Kubiniji ?). Acapulco and Mazatlan. Dr. Stimpson 



records H. helianthus from Mazatlan, but this is probably an erroneous 



identification. 



ECHINOIDEA. 



Diadema Mexicana A. Ag., Acapulco ! Cape St, Lucas ! 

 Ech'mocidaris stellata Ag., Guayamas and southward ! 

 Lytechinus roseus Verrill, Acapulco and Panama ! 

 Tripneustes depressus A. Ag., Guayamas ! La Paz ! 

 Toxopneustes sp. (Toxocidaris mexicana A. Ag.), Acapulco. 

 Echinometra VanBrunti A. Ag., Acapulco! and Cape St. Lucas! 

 Stoloniclypeus rotundus A. Ag., Acapulco (A. Ag.), Panama! 

 Encope (/randisAg., Head of the Gulf of California! 

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

 {?) Mmra clotho Mich., Mazatlan. 

 Lovenia sp., Gulf of California ! 

 Meoma nigra Verrill, Acapulco 1 



HOLOTHURIOIDEA. 



Stichopus Kefersteinii Selenka. Acapulco. 

 Holothuria lubrica Selenka. Acapulco. 

 Stolns ovulum Selenka. Acapulco. 



This list, which is doubtless very imperfect,* includes 23 species, ol 

 which 9 are found also at Panama ; 5 are found at Cape St. Lucas ; 

 the remaining 9 are, so far as known, peculiar to this district, hut 

 future researches will probably reduce the number, since the coast of 

 Mexico and Central America has been little explored. 



List of species of the West Coast of Central America and the Say 



of Panama. 

 Ophiuroidea. 



Astrophyton Panamense Verrill, Panama and Zorritos. Peru ! 



Ophiura teres Lyman, Cape St. Lucas to Panama! 



0. Pauamensis Lyin., Cape St. Lucas to Pmatna! 



0. variegata Lyin., Realejo and Panama ! 



0. Daniana Verrill, La Union! 



* Many additional species have recently been sent from La Paz by J. Pedersen, 

 lists of which will be found in articles 5 and 8, — Reprint. 



