EASTERN TROPICAL PACIFIC ASTEROIDEA. 81 
There is little color left in these specimens, which are nearly white, only 
the disk and the cribriform organs being more or less brownish. 
Station 4658. Eastern Tropical Pacific, 8° 30’ S., 85° 35’ 36” W., 2,370 fms. Bott. temp. 35.3°. Fne. 
gn. m., mang. nod. 
Two specimens. 
Albatrossia nuda. 
Plate 2, fig. 5, 6. 
Albatrossaster nudus Lupwic, 1907. Zool. Anz., 31, p. 318. 
The very small starfish upon which this species is based is unquestionably 
congeneric with the two somewhat larger specimens upon which A. semimargin- 
alis was founded by Ludwig, but the reduction of the inferomarginal plates 
has not gone so far, and since the disk is almost completely bare of spines, it is 
probably best to consider the present specimen representative of a different 
species. But Ludwig’s proposed change of the generic name from Albatrossia 
to Albatrossaster is quite unjustifiable for Albatrossia is a different word from 
Albatrossa with which Ludwig feared it might be confused. The confusion 
does not seem probable, but in any case, the International Commission on 
Nomenclature fully settled the matter in their Opinion 25 (July, 1910), dealing 
with the identical case of Damesella vs. Damesiella. Albatrossaster must 
therefore be considered as a synonym of Albatrossia. 
The holotype of A. nuda is very well-preserved, save for the breakage or 
loss of the large spines on the terminal plate. R = 7 mm. andr = 4.5. The 
terminal plate is 1 mm. long and 2 mm. broad, with a deeply concave proximal 
margin; it carries three spinelets, nearly or quite a millimeter long, one at the 
middle of the upper margin and one at each of the lower distal corners. The 
cribriform organ is more than a millimeter wide and the anal tube is nearly a 
millimeter long. The adambulacral armature consists of two flat, wide, pointed 
spinelets, subequal or the distal one larger. Two similar spinelets occur on the 
free lateral margins of the much swollen and conspicuous oral plates; at the 
inner end of these plates, situated on the suture between them is a single, large, 
oral spine. Ventrolateral plates, like disk, smooth and without spinelets. 
Color of disk pale dull reddish; marginal plates nearly white; lower surface 
tinged with dull reddish. 
Station 4647. Eastern Tropical Pacific, 4° 33’S., 87° 42’ 30” W., 2,005fms. Bott. temp. 35.5°. Lt. gy. 
and br. glob. oz. 
One specimen. 
