128 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
BRISSOPSIS BENGALENSIS Koehler 
Brissopsis bengalensis KorHLER, Echinoderma of the Indian Museum, Echinoidea, 
pt. 1, p. 230, pl. 15, figs. 1-11; pl. 20, figs. 63, 64, 1914. 
Localities —Station 5587, Sipadan Island, northwestern Borneo (lat. 
4°10’ N., long. 118°37’ E.); 759 meters; September 28, 1909. One 
large specimen, 85 mm. long, in a very fine state of preservation except 
that part of the oral side is lacking. 
Station 5603, Gulf of Tomini (lat. 0°24’ N., long. 123°04’ E) ; 1,469 
meters; November 15, 1909. One large complete specimen, 70 mm. 
long, one nearly complete, and two very fragmentary specimens. 
Remarks.—It is of considerable zoogeographical interest that the 
Albatross found this species, hitherto known only from south of Ceylon 
and the Bay of Bengal, in the waters of Borneo and Celebes. It may 
thus be expected to be more widely distributed in the Malay region. 
The identification of these specimens of B. bengalensis meets some 
difficulty, because of the fact that they have five ambulacral plates 
(four tube feet) reaching within the subanal fasciole, while the type 
would seem to have only four ambulacral plates (three tube feet) 
included. But a specimen from near the type locality of bengalensis, 
which I have received from the Indian Museum, has five ambulacral 
plates (four tube feet) within the fasciole, like the Albatross speci- 
mens. It would seem thus that Koehler has made some confusion of 
bengalensis and oldhami. That bengalensis should vary so much in 
this important character as to have sometimes four and sometimes five 
plates is highly improbable. 
BRISSOPSIS LUZONICA (Gray) 
Kleinia luzonica Gray, Catalogue of the Recent Echinida of the british Museum, 
p. 49, 1855. 
Brissopsis luzonica A. AGASSIZ, Revision of the Echini, p. 593, 1873.—pE MEIJERE, 
Siboga Eechinoidea, p. 188, pl. 5, figs. 44, 45; pl. 23, figs. 469-476, 1904.— 
KoEHLER, Echinoderma of the Indian Museum, Echinoidea, pt. 1, Spatang- 
idés, p. 207, pl. 18, fig. 16; pl. 14, figs. 4, 5, 7, 12, 13; pl. 20, figs. 51-54, 1914.— 
H. L, Crark, Hawaiian and other Pacific Echini, Echinoneidae ... Spat- 
angidae, p. 204, pl. 152, figs. 5-8; pl. 155, figs. 2, 8, 1917; Catalogue of the 
Recent sea-urchins in the British Museum, p. 213, 1925. 
Brissopsis duplex KorH Ler, Echinoderma of the Indian Museum, etc., p. 212, 1914. 
Locality. Station 5161, Tinakta Island (lat. 5°10’ N., long. 119°53’ 
K.) ; 29 meters; February 2, 1908. Six specimens. 
Remarks.—One of these specimens is most interesting in having 
two different kinds of globiferous pedicellariae, viz, the form with 
very slender valves figured by de Meijere in his Siboga Echinoidea, 
pl. 23, fig. 474, and another form with shorter and coarser valves, but 
hkewise terminating in two long, diverging teeth. 
That Koehler’s Brissopsis duplex, characterized by having two 
different kinds of ophicephalous pedicellariae, is identical with luzon- 
