VerriU, Notes on Radiata. 331 



Echinaster aculeatus (Gray, sp.) Ltltk., Guacomajo. 

 Heliaster microbrachia Xantus, Cape St. Lucas and Panama ! 



ECHINOIDEA. 



Cidaris Thouarsii Val., Cape St. Lucas to Panama! Galapagos. 



Astropyga venusta Verrill, Panama. 



Echinocidaris stellata Ag., Guayamas to Zorritos and Paita ! 



Lytechinus roseus Verrill, Acapulco and Panama ! 



Echinometra rupicola A. Ag., Acajutla and La Union to Zorritos! 



Encope occidentalis Verrill, Panama and Zorritos ! Galapagos. 



Echinoglycus Stokesii Gray, Punta Arenas ! Panama ! Galapagos. 



Mellita longifissa Mich., Panama, A. Ag.* 



Stoloniclypeus rotundus A. Ag., Acapulco. Boccones. Panama ! 



Metalia nohilis Verrill, Cape St. Lucas and Panama! 



Agassizia ovulum Ltitk., Boccones. Panama ! 



HOLOTHURIOIDEA. 



Holothuria languens Selenka. Panama. 



H. suhditiva Sel., " Panama (Florida?)." 



{?) H. glaherrima Sel., Panama, West Indies. 



{?) H. hotellas Sel., Panama, also Florida, Sandwich Is., Zanxibar, etc. 



(Selenka). 



Pentacta Panamensis Verrill, Panama ! 



Lissothuria ornata Verrill, Panama ! 



Stolus gibber Sel., Panama. 



The above list includes 61 species, of which 6 are known to extend 

 from Cape St. Lucas to Zorritos, Peru, and one of these even from 

 Guayamas to Paita ; 36 species range from Panama northward along 

 the Coast of Central America; 12 at least, extend from Panama 

 southward to Ecuador and northern Peru, but this number will, doubt- 

 less, be greatly increased by farther explorations, for only two Ophiu- 

 rians are known to me from the region between Panama Bay and 

 Paita. 15 species are, as yet, known only from Panama Bay;f and 9 

 have been found only on the coast of Central America. 



These figures must be taken only as an indication of the present 

 state of our knowledge of this fauna, — not as representing the actual 

 condition, for it must be remembered that while the Echinoderms 

 have as yet been but partially collected at any point, the collections 

 from Panama have been most complete, but those from Central Amer- 

 ica have also been much more so than those made south of Panama. 



The Holothuiians, considered by Selenka as common to Panama 

 and the West Indies, or the Indian Ocean, need reexamination, from 



* This species with Encope occidentalis and Echiaomel/ra rupicola were collected at 

 Conn to, Nic, by J. A. McNiel. — Reprint. 



f This number has since been reduced to 9, — Reprint. 



