REPORT OF THE ECHINOIDEA—MORTENSEN 109 
E’chinocyamus and Fibularia—a result that Clark, no doubt, would 
have emphatically rejected. 
FIBULARIA OVULUM var. TRIGONA Lamarck 
Fibularia trigona LAMARCK, Histoire naturelle des animaux sans vertébres, vol. 
3, p. 17, 1816. 
Locality.—Station 5134, near Basilan Island (lat. 6°44’45’”’ N., 
long. 121°48’00’’ EK.) ; 45 meters; February 7, 1908. Two small dead 
tests. 
Remarks.—These small specimens, only 2 mm. long, are, I think, 
though with some little doubt, referable to /ibularia trigona Lamarck, 
This species was hitherto not recognizable, but I have recently re- 
ceived photographs of the type specimen in the Paris Museum, which 
show that some specimens in my own collections which I had dis- 
tinguished as a variety of /. ovulum are identical with FP. trigona. 
The two above-mentioned specimens from the Albatross fit fairly well 
with trigona, but as they are evidently quite young, though the genital 
pores have already been formed, it is hardly possible to reach full 
certainty in their identification. So far as can be judged from the 
naked tests alone I do not think /. trigona can rank higher than as a 
variety of /. ovulum. 
FIBULARIA CRIBELLUM de Meijere 
Fibularia cribellum DE MEIsERE, Siboga Echinoidea, p. 112, pl. 6, figs. 53, 54; pl. 18, 
figs. 313, 314, 1904. 
Localities—Station 5143, Sulu Sea (lat. 6°05’50’ N., long. 
121°02’ 15” E) ; 35 meters; February 15, 1908. ‘Ten specimens. 
Station 5144, Sulu Sea (lat. 6°05’50’’ N., long. 121°02’15”” KE.) ; 18 
meters; February 15,1908. Four specimens. 
Station 5148, Sulu Sea (lat. 5°35’40”" N., long. 120°47’30’’ E); 31 
meters; February 16,1908. Three specimens. 
Station 5159, Sulu Sea (lat. 5°11’50’’ N., long. 119°54’ E.); 38 
meters; February 18,1908. Two specimens. 
Remarks.—All these specimens are dead tests, more or less worn. 
None of them exceeds a size of 5 mm. in length; upon the whole this 
small species, well characterized by its few but large round pores of the 
petals, does not appear to grow longer than 7 mm. 
FIBULARIA ACUTA Yoshiwara 
Fibularia acuta YosHiwara, Annot. Zool. Japon., vol. 2, p. 60, 1898; Japanese 
Echini, pl. 14, figs. 3, 4, 1906.—H. L. CLarx, Hawaiian and other Pacific Echini, 
Clypeastridae . . . Scutellidae, p. 58, 1914. 
Locality.—Station 5144, off Jol6 Strait (lat. 6°05’50’’ N., long. 
121°02’15’" E.); 35 meters; February 15, 1908. Four small dead 
tests. 
