On Medusa; from British Columbia and Alaska. 71 



ciiulal, 1(3 or 17 between anal and caudal. Broast and belly 

 shielded ; peetoral .scutes numerous, polygonal ; ventials, 9 

 or 10 transversely enlarged ones ou each side and 3 or -i 

 series of" smaller ones in the middle. All the scutes spinu- 

 lose, but not striated. Male with a thick band ot long hair- 

 like bristles on each side of the head from the mouth to the 

 gill-cleft, and another on the occiput and nape, also on the 

 upper surface of the four outer rays of the pectoral fin. 

 Brownish above, with five more or less distinct darker cross- 

 bands, tiie first at \.\w base of the dorsal fin ; fins spotted 

 with blackish. 



Total length 210 millim. 



Several specimens from St. Javier (GO feet) and the Rio 

 Durango (350 feet). 



Allied to L. lanceolata, Gthr. 



XVI. — Preliminary Report on a Collection of Medusoi from 

 the Coast of British Columbia and Alaska. By LOUIS 

 MuKBACu and Cresswell Shearer. 



The material forming the basis of this report was obtained 

 by the junior author during a trip to the coast of British 

 Columbia in the summer of 1900 in company with Professor 

 MacBride, of McGill University. Since then additions have 

 been received from Professor Kincaid, Seattle, Washington. 

 Those additions have enlarged and extended the range of the 

 collection, besides facilitating comparison with forms already 

 at hand. 



The list of species is as follows : — 



CocUniiiim apiculum, sp. n. Thauniantias cuUuIaria. 



Turris brevicouis, sp. u. I'roboscidactyla brevicirrata. 



Gouiuuumus Agassizii, sp. n. Phialidium languidum. 



I'olyorcbis miuuta, sp. n. gro<,airium. 



Mesouema victoria, sp. u. 



Gonionemus vertens. Siphoxopuora. 



Syndictyoii augulatum. 



Dipm-eiia dolicho(.5aster. Mug{^ia;a Kochii. 



Hippocreue Mertensii. 



In addition to the above are the following, whose identity, 

 through imperfect preservation, is somewiiat doubtful : — 



Sarsia exiuiia. Atollia Jiairdii. 

 roiaria. ObeUa polystyla. 



