238 Dr. J. Gwyn Jeffreys on 



Cod ! Nova Scotia, Newfoundland, and Gulf of St. Law- 

 rence ! Wellington Channel, 78 fms. (Belcher) ! Arctic 

 Expedition, 1875, N. lat. 81° 41', 5^ fms. ; F. Pierce Bay, 

 N. lat. 79° 25' (Feilden) ! Spitzbergen, 25-40 fms. (Torell) ! 

 Norway, 350-400 fms. (Verkriizen). Skye, 20-30 fms. 

 (M' Andrew) ! Fossil : Greenock (Ker, Jide Brown) ; Udde- 

 valla (Crosskey and Robertson) ! 



Height of spire variable. The minute spiral sculpture was 

 not noticed by Brown or Moller. 



This is the Margarita argentataoi Gould (1841), M.glaucay 

 Moller (1842), and M. Harrisoni of Hancock (1846) ; latter 

 two from the types. 



Trochus VakU, Moller. 



Marffarita Vahlii, M(311. Ind. Moll. Groenl. p. 8. 



Station 4, 20 fms. ; Holsteinborg, 12 fms. Greenland 

 (Moller, Amondsen). Spitzbergen (Torell) ! 

 " One of sea's rich gems." 



Littorinidse, 



Littorina ohtusata. Linnd, var. littoralis or Umata. 



Godhavn and Holsteinborg. 



Nerita littoralis, L., Jjittorina jpalliata^ Say, and L. limata^ 

 Loven, may be regarded as local and arctic varieties of the 

 first-named species. I noticed this in the list of shells for 

 Captain BurtonV work on Iceland. Nerita littoralis, var. 

 (/3 in the second edition of the ' Fauna Suecica'), is probably 

 a variety of Neritina fluviatilis. L. rudis is even more poly- 

 morphous than L. ohtusata. 



Rissoa arenaria, Mighels and Adams. 



Cingiila arenaria, Migh. & Ad. in Boston Journ. Nat. Hist. iv. (1842) 

 p. 49, pi. 4. f. 24. 



Body yellowish-white, with a faint tinge of pink: head 

 snout-like, rather long, and cloven vertically : tentacles club- 

 shaped, ciliated at the tips only : eyes placed on the outer base 

 of the tentacles : foot long, slender, rounded and double-edged 

 in front, bluntly pointed behind ; no caudal filament could be 

 detected. 



Godhavn, 5-20 fms. ; Station 4, 20 fms. ; Holsteinborg, 

 10-35 fms. Greenland (Eschricht, and coll. Moller) ! Casco 

 Bay, United States (Mighels and Adams). Newfoundland, 

 and Vadso in Finmark (Verkriizen) ! Spitzbergen (Torell) ! 

 Bohuslan, 30-40 fms. (Loven, as Rissoa Jeffrey si) ! 



Smaller and more conical than R. castanea j the colour is 



