266 THE VOYAGE OF H.M.S. CHALLENGER. 
Magellan, the latter extending to the Atlantic side. *Pentagonaster 
astrologorum, Pentagonaster auratus, and Pentagonaster magnificus, 
off the coast of Australia. 
EAsTERN ARCHIPELAGO: Two species between the parallels of 10° N. and 10° 8, 
Pentagonaster inequalis is supposed to be from New Guinea or 
Amboina. Pentagonaster semilunatus is stated to have been found at 
Celebes ; it extends into the Pacific, Indian, and Atlantic Oceans. 
INDIAN AND SOUTHERN OcEANS: Seven species between the parallels of 0° and 
45° 8. 
The following five species are recorded to be from Australia, viz., 
Pentagonaster grandis, Gray (non Pentagonaster grandis, Perrier), 
Pentagonaster nobilis, Pentagonaster ruber, Pentagonaster tuber- 
cularis, and Pentagonaster australis (= Pentagonaster procyon, Val.). 
Pentagonaster semilunatus, from Zanzibar,and extending to the Atlantic 
and Pacific. Pentagonaster tuberculatus, from Port Natal. 
The species obtained during the Challenger Expedition are marked in the foregoing list 
with an asterisk. 
The locality of the following eight species is unknown, and their names have conse- 
quently not been included in the foregoing lists :— 
Pentagonaster gibbosus, Perrier. Pentagonaster minimus, Perrier. 
Pentagonaster lamarcki, Miiller and Troschel. Pentagonaster ornatus, Miiller and Troschel. 
Pentagonaster luzonicus, Gray. Pentagonaster punctatus, Lamarck. 
Pentagonaster mammillatus, Miiller and Troschel. Pentagonaster regularis, Linck. 
The types of the three following species are not to be found, and the names should 
therefore be discarded in future :— 
Pentagonaster luzonicus, Gray. Pentagonaster regularis, Linck. 
Pentagonaster punctatus, Lamarck. 
Several of the species-names of Gray and of Miiller and Troschel will probably have to 
be discarded ultimately on account of being either duplicate names or synonyms; but as 
most of these doubtful forms are represented only by single examples, and are not con- 
cerned with the present report, I do not consider it desirable to interfere with them at 
present. 
8. Bathymetrical range: 20 fathoms to 1500 or 1930 fathoms. 
The depth of a large number of the species is not recorded, but the 
majority of the older ones are probably from the Littoral zone. Of the 
forms whose depth is known, Pentagonaster placenta and Pentagonaster 
parvus are confined to the Littoral zone; Pentagonaster grenadensis, Penta- 
gonaster arcuatus, and Pentagonaster japonicus to the Continental zone. 
“ue 
