2 PROCEEDINGS OP THE NATIONAL, MUSEUM vol.80 



It seems to represent Podofhora here much as Golobocentrotus^ also 

 with two species, represents it in the Bonin Islands. The genus 

 Podophora itself also includes two species, one of which, P. atrata^ 

 ranges from Zanzibar and Mauritius to the Hawaiian Islands but is 

 very local in its occurrence and has been reported only from volcanic 

 regions ; while the other, P. yedifera^ is definitely known only from 

 the Tuamotus, although it has been reported from the western coast 

 of South America and from the West Indies. 



In addition to the sea urchins and sea stars listed in the following 

 pages, the collection includes a number of ophiurans and holo- 

 thurians. 



I am greatly indebted to Dr. Hubert Lyman Clark, of the Museum 

 of Comparative Zoology at Cambridge, Mass., for his kindness in 

 examining for me and commenting upon the tj^e specimen of 

 Zenocentrotus paradoxus^ and for his further kindness in revising 

 the manuscript of the present paper. 



Class ECHINOIDEA 

 Family CENTRECHINIDAE 



CENTRECHINUS SETOSUS (Leske) 



One small' specimen. 



ECHINOTHRIX DIADEMA (Linnaena) 



One small specimen. 



Family STOMOPNEUSTIDAE 



STOMOPNEUSTES VARIOLARIS (Lamarck) 



Six specimens, all but one of which are small. 



Very small specimens much resemble similarly small individuals 

 of Echinometra ohlovga. They may easily be distinguished, how- 

 ever, by the milled ring at the base of the primary spines, which is 

 only slightly developed and not sharply differentiated from the spine 

 itself, is very fine, and is of the same color as the spine. In small 

 examples of Echinometra ohlonga the milled ring is strongly devel- 

 oped and stands out abruptly from the spine itself, is coarse, and is 

 brilliant white, or pinkish or grayish white, in sharp contrast to the 

 deep olive or blackish color of the spine. 



The United States National Museum possesses a fine series of 83 

 specimens of this species collected by Owen Bryant at Pelaboean 

 Ratoe, Wynkoops Bay, western Java. 



