26 ROYAL SOCIETY OF CANADA 
TETRACTINELLIDA. 
CRANIELLA CRANIUM, Müller. (Sp.) 
Alcyonium cranium, Müller. 1789. Zool. Dan. pl. 85, fig. 1. 
Tethya cranium, Lamarck. 1815. Mem. d. Mus., vol. i., p. 71. 
1 ee Fleming. 1828. British Animals, p. 519. 
+ ey Fristedt. 1887. Sponges from the Atlantic and Arctic 
Oceans and the Behring Sea (translation), Vega-expedi- 
tionens vetenskapliga arbeten, p. 438. 
Craniella cranium, Sollas. 1888. Rep. Tetractinellida, Zool. Chall. Exp., vol. 
XVe D uly 
Lambe. 1900. Notes on Hudson Bay Sponges, Ottawa 
Naturalist, vol. xiii., p. 277. 
«ce “e 
Craniella cranium is a well-known sponge found in North Atlantic 
waters generally. Fristedt in his admirable paper mentions three speci- 
mens from the east and west coasts of Greenland, and the writer in 
recognising in a sponge, dredged by Mr. Low in Hudson Bay, one that 
belongs to this species, extends its known range to a slight extent. As 
in the case of Suberites montalbidus, Carter, C. cranium is not included 
in the collection under examination, but its mention in this paper is 
thought to be desirable. 
Mr. Low’s specimen was obtained in June, 1899, in Richmond Gulf, 
Hudson Bay, at a depth of from 20 to 30 fathoms, soft mud bottom. 
It is somewhat ovate in shape, broadly rounded above and prolonged 
downward below where the basal strands have the appearance of having 
been attached to some foreign object; total height 10 cent., maximum 
breadth 4:5 cent., surface uneven, monticulose. The extreme summit 
is abraded. The measurements of the spicules agree with those given 
by Sollas in his description of the species in volume xxv of the “ Chal- 
lenger ” reports. 
THENEA MURICATA, Bowerbank. (Sp.) 
Tethea muricata, Bowerbank. MS. 1858. Phil. Trans. Roy. Soc., p. 308, pl. 
XV. ES es 
a Ge Bowerbank. MS. 1864. Mon. Brit. Spong., vol. i., pp. 25, 
108, figs. 35, 304, 305. 
i Fristedt. 1887. Sponges from the Atlantic and Arctic 
Oceans and the Behring Sea (translation), Vega-expedi- 
tionens vetenskapliga arbeten, p. 436. 
Thenea muricata, Sollas. 1888. Rep. Tetractinellida, Zool. Chall. Exp., vol. 
XXV. D, 95, Diy wal., fig: 3: 

