334 Yerrill, Notes on Radiata. 



Echinoglycus Stokesii Gray, Panama! etc. 

 Encope occidentalis Vern'll, Panaraa ! etc. 



In this list are 14 species, of which 6 do not appear to have been 

 found on the American coast, and three others are doubtful ; 4 occur 

 at Panama, and are species of wide range along the coast, while He- 

 liaster Cumingii is found at Zorritos and Paita. '•'•Echinus gihhosus^'' 

 if correctly identified, occurs also at Paita and Callao. 



This list, though very incomplete, indicates that the Echinoderm 

 fauna of the Galapagos is of a mixed character, having the closest 

 relations with that of Panama Bay, but at the same time including 

 species belonging to the more temperate waters of Peru, and a large 

 proportion that are peculiar to the group. Most of the peculiar spe- 

 cies resemble Pacific and East Indian forms rather than American. 

 Such are the species of Amblypneustes^ Temnopleurus, Culcita, — 

 genera which have not been found upon either the East or West coast 

 of America. On the contrary, Seliaster, Echinocidaris, Lytechinus, 

 Echinoglycus, Encope are very characteristic American genera. 



List of species found on the coast of Peru, at Paita and southward. 



Ophiurioidba. 



Ophiactis Kroyeri Liitk., Callao! 



Ophiothrix ynagnifica Lym., Peru (Lyman). Paita! 



ASTERIOIDEA. 



Luidia Bellonce. Ltitk., Callao! (Yale Museum). 



Astropecten Peruanus Verrill, Paita ! 



Asleriscus (Faiiria) Chilemis Ltltk., Callao ! (Yale Mus.). Valparaiso ! 



(Ltitken). 

 Stichaster aurantiacus V. (Meyen sp.), Callao ! Valparaiso (Gray), Chili 



(M. and Tr.). 

 Heliaster helianthus Gray, Paita and Callao ! Caldera, Chili ! Valparaiso. 

 H. Cumingii Gray, Paita and Zorritos ! 



ECHINOIDEA. 



Echinocidaris stellata Ag., Paita and northward ! 



E. spatuUgera Ag., Paita and Callao ! Coquimbo (Ag. and Des.). 



Arbacia nigm, Gray, Paita and Callao to Caldera, Chili ! Coquimbo. 



{?) A. grandinosa (Val. sp ), Peru, Carthagenia, (Ag. and Des.). 



Loxechinus albus Ag. and Des., Mejillones! Callao to Chili (Ag. and Des.). 



Euryechinus imbecillis Verrill, Paita and Callao ! 



Boletia viridis Verrill, Callao!* 



Agassizi'i scrobiculata Val., Peru (Ag. and Des). 



* Probably from New Zealand, see footnote, p. 304, — Reprint. 



