106 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
Station 5164, Observation Island (lat. 5°01’40’’ N., long. 119°52’20” 
E.) ; 88 meters; February 24, 1908. Two broken tests and one live 
specimen of irregular outline. 
Station 5212, east of Masbate (lat. 12°04’ N., long. 124°05’ EB.) ; 198 
meters; April 17, 1908. Three dead tests. 
Station 5218, between Burias and Luzon (lat. 18°11’35”’ N., long. 
123°03’ E.) ; 87 meters; April 22, 1908. One young specimen. 
Station 5242, Melampaya Sound, Palawan Island; 26-46 meters; 
December 238, 1908. One broken test. 
Station 5408, between Cebu and Leyte; 290 meters; March 18, 
1909. One broken test. 
Remarks.—These specimens call for no comment, except one from 
station 5159 that is unusually elongate, 32 mm. long, but only 25 mm. 
broad. The one live specimen from station 5164 is abnormal, of quite 
irregular outline. 
The depth of 159 fathoms (station 5408) is quite unusual for this 
species, otherwise it is not known from greater depths than about 45 
fathoms. But since the specimen taken from this station is an old, 
broken test, it does not count; there is no certainty that it has actually 
been living in the place where collected. 
LAGANUM FUDSIYAMA Déderlein 
Laganum fudsiyama DOpreRLEIN, Arch. fiir Naturg., vol. 51, p. 82, 1885.—A. Agassiz 
and H. L. CiarK, Bull. Mus. Comp. Zool., vol. 50, p. 249, 1907.—H. L. Crarx, 
Hawaiian and other Pacific Echini, Clypeastridae ... Scutellidae, p. 46, 
pl. 124, figs. 18-16; pl. 127, figs. 7, 8; pl. 140, figs. 3, 4; pl. 141, figs. 4-9, 1914; 
Catalogue of the Recent sea-urchins in the British Museum, p. 158, 1925. 
Laganum solidum pE Mrisere, Siboga Echinoidea, p. 121, pl. 6, figs. 64, 66, 1904. 
Laganum conicum p& MEVWERE, Siboga Hehinoidea, p. 120, pl. 6, fig. 68; pl. 18, figs. 
325-328, 1904. 
Laganum diploporum A. Agassiz and H. L. CLarkK, Bull. Mus. Comp. Zool., vol. 51, 
p. 129, 1907.—H. L. CLuarK, Hawaiian and other Pacifie Echini, Clypeastridae 
... Scutellidae, p. 46, pl. 127, figs. 9-12; pl. 142, figs. 2-4, 1914. 
Locality—Station 5592, northeastern Borneo (lat. 4°18’ N., long. 
118°28’ K.) ; 558 meters; September 29, 1909. One large, somewhat 
fragmentary, dead test, 56 mm. long. 
Femarks.—Though in poor condition this specimen may with a fair 
degree of certainty be referred to the species ZL. fudsiyama, with which 
I think, in agreement with H. L. Clark, de Meijere’s two species Z. 
solidum and L. conicum are identical. Moreover, I must likewise re- 
gard L. diploporum A. Agassiz and H. L. Clark as identical with Z. 
judsiyama, the only essential character distinguishing it from the 
latter species, the doubling of the posterior genital pore, being not at 
all constant (as already realized by Clark), and there are no other 
reliable characters by which to distinguish them. 
