20 ROYAL SOCIETY OF CANADA 
It is represented in the present collection by specimens from Davis 
Strait that serve to enlarge the known range of the species but that 
apparently do not present any new structural features. 
Localitves.—Davis Strait, Reef Coal Hill, bearing south-east, 20 
miles, in 30 fathoms, rocky bottom, A. M. Rodger, 30th of May, 1892, 
one specimen; Davis Strait, off Cape Raper, 4 miles S., in 60 fathoms, 
bottom of stones and sand, A. M. Rodger, 13th of September, 1892, two 
specimens. The colour of this sponge may be naturally dark; two of 
the specimens are of a pale yellowish-brown colour, and appear to be 
faded, the third has been protected from the light and is of a brown 
shade. 
In 1897 Mr. A. P. Low whilst dredging in Wakeham Bay, Hudson 
Strait, obtained a fragmentary specimen in 10 fathoms, mud bottom. 
GELLIUS LAURENTINUS. (Sp. nov.) 
(Plate I, figs. 1, 1a.) 
A Gellius that at first was thought to be possibly a variety of Gellius 
flagellifer, Ridley and Dendy, is here described under a new specific name. 
G. flagellifer was referred to by the writer in 1896 (vide Transactions, 
Royal Society of Canada, second series, vol. ii.) as occurring in the Gulf 
of St. Lawrence; the specimens representing the new species are from 
St. Paul’s Island at the southern entrance to the Gulf of St. Lawrence, 
from the Strait of Belle Isle and from Davis Strait. G. Laurentinus 
differs from G. flagellifer principally in the size of the microsclera which 
are small.and of a normal shape quite different to the large sigmata 
characteristic of the latter species. ; 
In G. Laurentinus the sponge is amorphous and forms small, 
rounded masses, that consist of a loose irregular reticulation of oxeote 
spicules without apparently any special dermal arrangement thereof. 
Texture fragile, crumbling easily. Dermal membrane thin, delicate, 
separated with difficulty from the spicules beneath. A few small open- 
ings, flush with the general surface, that are to all appearances, oscula, 
occur irregularly at the surface. 
Spicules—Megasclera; large, rather abruptly but sharply pointed, 
smooth oxea, varying in length from “275 to ‘373 mm., with an average 
diameter of ‘015 mm. WMicrosclera; simple sigmata, with very little 
variation in size, ‘032 mm. in length from curve to curve; in moderate 
numbers in the dermal membrane and apparently also in the body of — 
the sponge. 

