EEPORT ON THE ASTEROIDEA. 345 



passing also into the Pacific. Pentaceros belli, Pentaceros sladeni, 

 and Pentaceros grayi, from Mauritius, the last named also from 

 Zanzibar, and extending into the Eastern Archipelago. Pentaceros 

 verrucosus, the type of which was simply recorded as from " Indien," 

 seems to me to embrace Pentaceros nodosus, Gray (non Linne) ; and if 

 this view be correct, it would include also Pentaceros clouei and 

 Pentaceros grayi. Pentaceros affinis, Pentaceros regulus, and 

 Pentaceros westermanni, from India, the last two off the west coast, 

 but the exact locality of the first is unknown. Pentaceros reinhardti, 

 from the Nicobar Islands. Pentaceros gramdosus, Pentaceros nodu- 

 losus, and Pentaceros reticidatus, from the west coast of Australia, 

 the last named extending into the Atlantic (West Indies and Brazil). 

 Pentaceros gramdosus appears to me a doubtful member of the genus. 



Eastern Archipelago : Eleven species between the parallels of 20° N. and 20° S. 

 Pentaceros hedemanni, * Pentaceros productus, Pentaceros de- 

 cipiens, Pentaceros liitkeni, Pentaceros troscheli, Pentaceros miilleri, 

 and Pentaceros grayi, from Billiton, the last named extending into 

 the Indian Ocean to Zanzibar. Pentaceros super-bus, from Sumatra. 

 Pentaceros muricatus, from Timor, Larentuka, and Amboina, and ex- 

 tending into the Indian Ocean. * Pentaceros turritus, from Am- 

 boina, Ceram, Banda, and New Guinea, and extending into the Pacific 

 and Indian Oceans. * Pentaceros callimorphus, from Torres Strait. 



Pacific : Nine or ten species between the parallels of 30° N. and 40° 8. 



Pentaceros alveolatus, Pentaceros caledonicus, and Pentaceros tur- 

 ritus, from New Caledonia, the last named extending into the Eastern 

 Archipelago aud Indian Ocean. Pentaceros chinensis and Pen- 

 taceros orientalis, from China. Pentaceros australis, Pentaceros val- 

 vulatus and Pentaceros gracilis, from Australia, the last from the east 

 coast. Pentaceros cumingi and Pentaceros occidentalis, off the west 

 coast of America, the former from Guayaquil, the latter from Central 

 and Northern America. I believe, however, that the two names are 

 synonymous, and that Pentaceros occidentalis should consequently be 

 disused. 



0. Bathymetrical range : Shallow water ; all confined to the Littoral zone. 



7. Nature of the Sea-bottom : Recorded in very few instances, probably varying con- 

 siderably, but Sand or Mud in most cases. 



The species collected by the Challenger are indicated in the foregoing list by an 

 asterisk. 



(ZOOL. CHALL. EXP. — PABT I.I. — 1888.) 



