Section IV, 1892. t 67 ] Trans. Roy. Soc. Canada. 



V. — On some Sponges from tlie Pacific Coast of Canada aiifl Behrhig Sea. 

 By Lawrence M. Lambe, F.G-.S., F.G-.S.A., of the G-eological Survey. 



(Presented by J. F. Whiteaves, and read June 1, 1892.) 



The sponges referred to in the present paper were collected by Dr. George M. Dawson 

 in 1885, at several localities on the coast of British Columbia, and in 1891 in Behring 

 Sea. It will be convenient to consider the collections nuade in each of these years, 

 separately, as they appear to belono' to two distinct faunas. 



The writer i.s under great obligations to Mr. Whiteaves for much kindly assistance 

 in the preparation of this paper, and to Mr. Martin J. G-rifEn, Parliamentary Librarian, 

 for the loan of books that are not in the library of the Geological Survey. 



A.— Species Collected in 1885 from the Pacific Coast of Canada. 



Before describing these it will be as well to note that the other invertebrata collected 

 by Dr. Dawson in 1885 have already been reported upon by Mr. Whiteaves in a paper, 

 entitled " On some Marine Invertebrata dredged or otherwise collected by Dr. G. M. 

 Dav\'son in 1885, on the coast of British Columbia, with a supplementary list of a few 

 land and fresh water shells, fishes, birds, etc., from the same region," which was read be- 

 fore Section IV. of this Society in 1886, and published in its ' Ti-ansactious.' 



All the sponges referred to under this heading were obtained by dredging. 



MONAXGNIDA. 



Halichondria panicea, Johnston. 



(Plate III, figs. 1 and 2, and Plate V, figs. 1, la, and 2, 2a, 2b.) 



I l.Uu 

 Halichondria panicea, Johnston. 1842. British Sponges, p. 114, pi. x. and pi. xi., lig. 5. 



Amorpldna panicea, Schmidt. 1870. Spong. Atlant. Gebiet., p. 77. 



Amorphina megalorhaphis, Carter. 1881. .'\^nn. and Mag. Nat. Hist., ser. 5, vol. vii. p. 3G8. 



Amorpldna megalori-haphis, Ridley. 1884. Zool. Coll. H.M.S. " Alert," Brit. Mus., p. 41G. 



Aiiioriiliinameijalirrlmplds. Ridley. 188.5. Narr. f'liall. Exp., vol. i. pt. ii. p. .571. 



1. — An encrusting form (Plate III, fig. 2) with an average thickness of 5 mm., found 

 growing on rocks. The oscula are raised above the general level and occupy the summits 

 of conical projections. The size of the spicules varies from 0403 by 0013 mm. to 0-176 by 

 0006 mm. (Plate V, figs. 2, 2a, 2b). One specimen. 



Locality. — Seymour Narrows, Discovery Passage, Vancouver Island, in shallow water. 



2. — A massive variety sometimes growing round portions of the fronds of fucoids, 

 represented in the collection by two specimens, the larger of which (Plate III, fig. 1) is 



