32 ROYAL SOCIETY OF CANADA 
GRANTIA INVENUSTA. (Sp. nov.) 
(Plate VI, figs. 14, 14a-f.) 
Sponge solitary, erect, in the form of a subcylindrical tube, attached 
by the base, attenuated below and broadest above midheight, with a single 
naked osculum at the upper end. Wall of tube ‘65 mm. through, leaving 
a gastral cavity about as wide as the wall is thick. Surface with a regu- 
lar reticulation of low ridges. Texture moderately firm. Length of the 
only specimen in the collection 9°5 mm., maximum breadth 2°25 mm., 
width of osculum :*8 mm. This sponge was growing on a hydroid to 
which also was attached a specimen of Leucosolenia cancellata, Verrill. 
Skeleton.—Composed of gastral quadriradiate, gastral triradiate, 
tubar triradiate and dermal triradiate spicules. | 
1. Gastral quadriradiates.—With slender, gradually tapering and 
sharply pointed rays; facial rays curved very slightly toward the apical 
ray; ‘085 mm. in length and ‘003 mm. in diameter at midlength; apical 
ray generally slightly curved, longer and a little stouter than the facial 
rays and sometimes rather obtusely pointed, ‘098 mm. in length and 
‘0049 mm. thick. 
2. Gastral triradiates.—Differing from the quadriradiates only in 
the absence of an apical ray. In an average sized spicule the rays are 
‘104 mm. long and ‘003 mm. in diameter. 
3. Tubar triradiates—Sagittal, graceful in shape, rather slender, 
with rays of the same thickness; basal ray ‘150 mm. long with a diameter 
at midlength of ‘0049 mm.; lateral rays straight or with their extremi- 
ties slightly curved toward the basal ray, ‘078 mm. long. 
4. Dermal triradiates—Sagittal, with sharply pointed rays of the 
same thickness, that are not in the same plane but are inclined slightly 
inward; basal ray straight, ‘072 mm. long, lateral rays, straight, -058 
mm. long and ‘0049 mm. in diameter at midlength. 
Locality—Davis Strait, off Cape Raper, 4 miles S., 60 fathoms, 
bottom of stones and sand, A. M. Rodger, 13th of September, 1892, one 
specimen. 
LEUCANDRA VALIDA. (Sp. nov.) 
(Plate IV, figs. 10, 10a-e and Plate V, figs. 11, 11a-e.) 
Sponge solitary, erect, subcylindrical, broadest near the base, nar- 
rowing gradually upward, terminating above in a single osculum pro- 
vided with a short fringe. Surface bristly. Wall about 1:02 mm. thick 

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