[LAMBE] SPONGES FROM COAST OF NORTHEASTERN CANADA 29 
Skeleton — The skeleton is composed of gastral quadriradiate, gas- 
tral triradiate and tubar triradiate spicules, dermal oxea projecting from 
the distal ends of the radial tubes and linear spicules occurring with 
the oxea. 
1. Gastral quadriradiates—Comparatively few in number with long 
apical rays; all rays slender, terminating in fine points ; facial rays 
straight, not quite in the same plane but inclined a little toward the 
apical ray, length about ‘117 mm., with a diameter at midlength of -003 
mm.; apical ray up to ‘229 mm. in length and :005 in diameter. 
2. Gastral triradiates—In three or four layers parallel to the gas- 
tral surface. Rays lying in the same plane, slender, sharply pointed, in 
size about +124 by ‘003 mm. 
3. Tubar triradiates—Sagittal; the three rays of the same thick- 
ness; basal ray tapering to a sharp point, straight, ‘131 mm. long and 
‘006 mm. thick at midlength; lateral rays curved toward the basal ray, 
sharply pointed, -078 mm. long; oral angle 134°. 
4. Dermal oxea.—Occurring in tufts at the distal ends of the radial 
chambers in which their inner ends are embedded and beyond which 
they project by about two-thirds of their length. Sharply pointed, gen- 
erally slightly curved, reaching a length of ‘506 mm. with a midlength 
diameter of ‘013 mm. 
5. Linear spicules.—Scattered among and lying in the same direc- 
tion as the dermal oxea, over ‘262 mm. in length and about ‘0016 mm. 
in diameter. These spicules, on account of their slenderness, are 
generally broken. 
Localities —Davis Strait, Exeter Harbour, 10 fathoms, stony bot- 
tom, A. M. Rodger, 9th of September, 1892, one specimen; Davis Strait, 
off Cape Raper, 4 miles S., 60 fathoms, bottom of stones and sand, A. M. 
Rodger, 13th of September, 1892, two specimens. 

Sycon EGLINTONENSIS. (Sp. nov.) 
(Plate II, figs. 6, 6a-e.) ® 
Sponge solitary, in the form of a long, curved subcylindrical tube 
narrowing slightly toward either extremity, attached by the base, with 
a single, terminal naked osculum. Surface hispid from the projecting 
oxea. Texture firm. The only specimen in the collection is 32 mm. 
long, 4°5 mm. broad at midheight and 1°5 mm. broad at the osculum ; 
the gastral cavity is 2°5 mm. wide surrounded by the wall 1 mm. thick. 
Skeleton.—The skeleton consists of gastral quadriradiates, gastral 
triradiates, tubar triradiates, large oxea and linear spicules. 
