EURETID. 
141 
Euretid (?) from Station 4685. 
There are in the collection three small, flat, lamellar fragments about 1 mm. 
thick, the largest of which is 16 mm. long, trawled in the southeastern Pacific at 
Station 4685 on 10 December, 1904; 21° 36.2' S., 94° 56' W.; depth 4033 m. 
(2205 f.); they grew on dark brown clay; the bottom-temperature was 35.3°. 
These lamellae are skeleton-nets composed on one face of longitudinal and 
transverse beams, mostly 40-50 m thick, which enclose square, rectangular 
meshes, generally 300-500 n long and 200-250 ^ broad; on the other face of 
considerably thinner beams, which enclose smaller, irregularly triangular meshes. 
The beams are mostly spined. The spinulation is more developed in the irregu- 
lar than in the regular part of the network. Numerous hexactines, 100-150 ^ 
or more in diameter, are attached by one ray to the beams of this network. 
These skeleton-nets probably belonged to a euretid. 
Euretid (?) from Station 4695. 
There are in the collection four fragments of skeleton-nets of this sponge 
trawled northeast of Eastern Island, at Station 4695 on 23 December, 1904; 
25° 22.4' S., 107° 45' W. ; depth 3694 m. (2020 f.); they grew on fine, light 
brown ooze. 
The largest and least incomplete is 32 mm. high, and appears as a tubular 
stalk, extending above to a thin-walled funnel 22 mm. in diameter. The stalk 
is about 10 mm. long, and in the middle, where it is somewhat attenuated, of 
oval, transverse section, 6.5 mm. broad and 4.5 mm. thick. 
The skeleton-net of the stalk is irregular, composed of longitudinal and oblique 
spined beams, the former about 90 m thick, the latter 15-50 n. In places the 
stout longitudinal beams of this part of the net bear numerous, vertically arising 
thorns, 6-10 m thick at the base, and of varying length. The meshes of this 
network are irregular, generally 50-200 ^ wide. The skeleton-net of the funnel 
is more regular, chiefly composed of longitudinal and transverse beams. Oblique 
beams, however, also occur in it, particularly in its outer zone. The beams of 
this network are smooth and 50-130 m thick, the meshes in the inner zone 
square, rectangular, in the outer zone more frequently triangular. The rec- 
tangular meshes of the inner zone are mostly about 600 n long and 300-400 u 
broad. Verticil thorns, directed towards the funnel-cavity, arise from the nodes 
of the inner part of this network. 
