28 ROYAL SOCIETY OF CANADA 
ture Island, Gaspé. A particularly large and well preserved specimen 
from Upernavik, Baffin Bay, in the present collection, extends the range 
of the species much farther north. The writer has also recorded the 
occurrence of S. protectum at Boat Harbour, near Nanaimo, Vancouver 
Island, B.C. (vide Ottawa Naturalist, vol. xiii., p. 262.) 
The Upernavik specimen is irregularly ovate in shape, very hispid 
and attached by the centre of the base; its dimensions are :—height 
including the oscular fringe 25 mm., greatest breadth 17 mm., length 
of oscular fringe 10 mm., width of the same at the osculum 4 mm. 
The spicules are, as already mentioned in the original description, 
gastral quadriradiates, tubar triradiates, triradiates, near the dermal sur- 
face, with a bent basal ray protecting the entrances to the inhalent 
canals, oxea at the distal ends of the chambers projecting far beyond 
the dermal surface, slender linear spicules associated with the oxea, and 
the oxea of the oscular fringe. | 
There are apparently triradiates occurring with the gastral quadri- 
radiates, differing from the latter only in the absence of the apical ray. 
The sections obtained from the specimens in the present collection are 
better than those used for the original description and from them it is 
seen that the bent rays of the triradiates near the dermal surface con- 
verge toward and serve to protect the entrances to the inhalent canals 
and are directed away from the distal ends of the chambers. The oxea 
of the dermal surface reach a length in the Upernavik specimen of 
4-07 mm. 
Localities—Strait of Belle Isle, off Norman’s Light, 60 fathoms, 
rocky bottom, A. M. Rodger, 9th of April, 1892, one specimen; Baffin 
Bay, Upernavik, west coast of Greenland, 1892, one large and well- 
preserved specimen. 
SYCON MUNDULUM. (Sp. nov.) 
(Plate III, figs. 7, Ya-e.) 
Sponge solitary, erect, tubular, broadest at or near the base, dimin- 
ishing in size gradually to the osculum above which is without a spicular 
fringe. Texture not very firm. Surface hispid. Length of specimen 
19 mm., breadth a little above the base 3°75 mm., width of osculum 
1:25 mm. 
The radial tubes are arranged regularly round a rather narrow 
cylindrical gastral cavity. Length of radial tubes, not including the 
dermal tufts of oxea, ‘75 mm., breadth of the same ‘137 mm. . 
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