REPORT ON THE ASTEROIDEA. 327 
the diagnosis of the new genus Anthenoides, that the abactinal skeleton is reticulated,’ and 
other alliances to Anthenew are remarked on;—Anthenoides, according to its author, 
differing in the more feeble development of the abactinal membrane and the smaller size of 
the pedicellarize, which are confined to the plates adjacent to the ambulacral furrows. The 
present form certainly does not conform to Anthenoides in these respects. Furthermore, 
on some important points Perrier is silent, which I hardly think would have been the case 
if the structures had been present in his form, whilst in others the description is not 
sufficiently definite or specifically pertinent to allow a comparison to be made. 
Relying, therefore, on Perrier’s accuracy of observation, I cannot consider that the form 
under notice and Anthenoides belong to one and the same genus. The polygonal plates 
of the abactinal skeleton of Leptogonaster can in no way be called reticulate, the valvate, 
tubercle-like pedicellariz of the actinal area can scarcely be said to resemble those of 
Anthenea in their character, and the two forms of pedicellariz on the abactinal area are 
also noteworthy. The alliances of Leptogonaster would on the whole seem to be nearer 
the Pentagonasteride. 
Chorology of the Genus Leptogonaster. 
a. Geographical distribution :-— 
Eastern ARCHIPELAGO: One species between the parallels of 10° and 20°N. 
Leptogonaster cristatus, off the Philippine Islands, 
8. Bathymetrical range: 100 to 115 fathoms. 
y. Nature of the Sea-bottom: Green mud, 
Chorological Synopsis of the Species. 
Ocean. Range in Fathoms. | Nature of the Sea-bottom. 
Leptogonaster cristatus  , ‘ . | Eastern Archipelago 100 to 115 Green mud. 
1. Leptogonaster cristatus, n.sp. (Pl. LIV. figs. 1-7). 
Rays five R=66mm.,r=24mm. R=27571. Breadth of a ray between the 
fifth and sixth supero-marginal plates, 11°5 mm. 
General form flat and depressed. Disk large and pentagonal, slightly inflated. Rays 
1 Loc. cit., p. 246. 
2 In the description of the species, however, Perrier (Joc. cit., p. 248) speaks of “les ossicules du squelette 
qui sont polygonaux comme chez les Pentagonaster,” so that I am at a loss to understand what is meant by the 
diagnosis. 
