272 REVIEWS GEOLOGlCAl, SURVEY OF CANADA. 



species met witli by Mr. Bell in the course of his expedition.* 

 Although necessarily an incomplete enumeration of our terrestrial, 

 fresh-water, estuary, and marine species, taken together, it may help 

 to direct attention to the subject, and serve as a groundwork for 

 future additions. 



CANADIAN MOLlirSCA, INCLCTDINa A TEW SPECIES EEOM lABEADOE : 



Cephalopoda. — [Mr. Bell does not enumerate any examples of this 

 class; but Prof. Dawson (Canadian Naturalist, vol. iii, p. 329) has 

 obtained Loligo illecehrosa from the coast of Gaspe j and examples of 

 the following genera may probably be looked for, in addition ; — Octo- 

 pus, CirroteutMs, Onychoteutliis, and OmmasfrepTies. A species of the 

 latter genus certainly occurs in the Grulf of the St. Lawrence. It is 

 the " flying squid " or " sea-arrow " so abundantly used as bait by the 

 Newfoundland fishermen.] 



G-ASTEEOPODA. 



Helicid^ : — Selisc liortensis (imported) ; S. alternata / H. laby- 

 rintJiica CSay) ; H- egena (Say) ; JS. lucida (Drap.) ; H. striatella 

 (Ant.) ; H. pulcJiella ; H. harpa ; [JT. albolahris (Say) ; H. ononadon f 

 (Backet).] Succinea obligua (Say) ; S. vermeta (Say). Vitrina pel- 

 lucida (Drap). [The latter species was found by Mr. Bell, near the 

 movith of the Magdalen Biver. Unless introduced, its occurrence iS' 

 of some interest, as the genus Vitrina belongs almost exclusively to 

 the Old "World. It forms a connecting link between the Selicidce 

 and the Limacidce'\. 



LiMN^iD^ : — Limncea catascopium (Say) ; Z. umlrosa (Say) ; L. 

 apacina (Lea) ; X. modicella, and two new species. [The well known 

 L. stagnalis, L. gracilis, and several other species, likewise occur in 

 Canada]. Physa aurea (Lea) ; P. heterostropha (Say) ; P. ancillaria 

 (Say); P. elliptica (Lea). [^Ancylus rivularis (Say).] Planorbis 

 trivolvis (Say) ; PL parvus (Say) ; [jPZ. deflectus ; PI. companulatus ; 



* The shells collected by Mr. Bell were subsequently examined, and their specific determi- 

 nations confirmed, by the distinguished conchologist Prof- Lea of Philadelphia. A few of the 

 species mentioned in our list were obtained by Mr. Bell in a previous expedition to the mouth 

 of the St. Lawrence ; and some are added from personal observation and other sources, espe- 

 cially Professor Dawson's paper " A "Week in Gaspfe," published in the third volume of the 

 Canadian Naturalist. 



t We have found the shell of this species, in great profusion, imbedded in the " flats " of 

 the Grand Eiver, in "Western Canada. A compressed " parietal " tooth extends into its 

 somewhat contracted aperture. 



