A Week in Gaspe. 331 



Ophiocoma bellis (aculeata). — Abundant, eight to ten fathoms. Often 

 inhabits interior of dead shells of Pecten magellanicus. 



Asteracanthion rubens. — Very abundant in Gaspe Basin, where it was 

 seen feeding on Mya arenaria. 



A. glacialis. — Some small specimens, probably young of this species. 



Psolus. — A small animal of this genus, perhaps the young of P. phan- 

 topus, on stones, ten fathoms. 



Actinia dianthus. — Abundant on stones in ten fathoms. The speci- 

 mens observed differ somewhat from the European in range of colour- 

 ing and form, but probably are referable to this species. I have not 

 seen any notice of the occurrence of A. dianthus on the American coast, 

 except in Stimpson's Marine Invert, of Grand Manan, where it is stated 

 that a specimen supposed to be of this species was obtained by dredging, 

 but lost before it could be examined. 



A. . — A species resembling in some respects A. Carneola (Stimp- 



son), but much larger. It has 150 tentacles in three rows, an elevated 

 disk, red and purple, with two rows of white spots at the base of the 

 tentacles. Exterior finely lined with red or crimson. (These Actinia 

 will be described and figured in next number.) 



Cyanea Postelsii. — Gaspe" Basin. 



Aurelia aurita. — Specimens cast on shore probably of this species. 

 Multitudes of Medusae and small Crustaceans were observed to cause a 

 brilliant phosphorescence in the waters of the Bay at night ; but not 

 having a proper towing-net we did not obtain specimens. 



Tubularia larynx. — Abundant on shells in deep water. 



Sertularia argentea. — Same habitat. 



Pinnularia falcata. — Same habitat. 



In addition to the above species, I find in our collection ten or 

 twelve species of Bryozoa, all apparently identical with those described 

 by Johnston and others ; two or three sponges ; and six species of Fo- 

 raminifera, four of which at least are identical with European species, 

 and three with those found in the Post Pliocene clays at Montreal. I 

 hope at some future time to notice these specimens more fully, in con- 

 nection with fossil Bryozoa and Foraminifera recently found at Montreal 

 and Beauport, and with a sufficient amount of explanation to render the 

 subject interesting to the readers of the Journal. 



J. W. D. 



ART. XXV1IL— The Fresh Water Alga of Canada. A Paper 

 read before the Natural History Society of Montreal, by the 

 Rev. A. F. Kemp. 



In the year 1840, when Hassall undertook his researches into 

 the British Fresh-Water Algse, this department of Cryptogamic 

 Botany was in a very unsatisfactory condition. There were few 

 works on the subject, and the descriptions and figures which they 



