[TAYLOR] MARINE MOLLUSCA 79 



ME8ALIA, Gray. 



271. Mesalia reticulata, Mighels and Adams, s]). 



TurrUclla reticulata, M, & A., Proc. Bost. Soc. Nat. Hi.st., vol. i., p. 50 (November, 1841); 

 and Bost. Jour. Nat. Hist., vol. iv., no. 1, p. .5(), pi. iv., fig. 19 (.January, 1842).' 

 = T. lactea, Moller (1842). 

 = M. lacteola, Cpr. (1864). 



A very common shell in sand in ten to thirty fathoms. It has been 

 dred,;^ed in nearly all Ihe localities where dredging has been carried on 

 from Victoria to the Queen Charlotte Islands. 



LITTORINA, Ferussac. 



272. Ltttorina sitchana, Philii^pi. 

 Proc. Zool. Soc. London, 184.5, p. 140. 



This shell is most probablj^ only a form of the Atlantic L. rudis, 

 and if so has an extensive range and also a very extensive sj'nonj'my. 



It is an abundant and variable littoral shell occurring throughout 

 our province. 



273. LiTTORiNA scutulata, Gould. 



Proc. Bost. Soc. Nat. Hist., vol. iii., p. 83 (March. 1849); and U. S. Expl. Exped., 

 Mollusca, p. 200, figs. 241, 241a (1852). 



Quite as abundant as L. sitchana, and occurring with it on all our 

 coasts. 



LACUNA, Turton. 



274. Lacuna vincta, Montagu, sp. 



Turbo vincta, Mont., Test. Brit., p. 308 (1803). 

 = carinata, Gould. 

 = solidula. Loven. 

 = divaricata, O. Fab. 

 vars. = effusa, excequata and porrecta, Cpr. 



This is a very variable shell occurring on Zostera at low water on 

 ail our coasts. 



275. Lacuna variecjata. Carpenter. 



Kept. Brit. Assoc, 1863, p. 6.56 (August, 1864); and Ann. Mag. Nat. Hist., series 3, 

 vol. xiv., p. 428 (December, 1864). 



This sjjecies occurs with the last named at Victoria and Saanich, 

 but is not so common as is Jj. vincta. 



L. variegata has not been noticed so far in other parts of the pro- 

 vince, though no doubt it will be found when more carefully looked for. 



