238 Dr. J. Gwyn Jeffreys on 



Cod ! ISTova Scotia, Xe\Yfoiindland, and Gulf of St. Law- 

 rence ! Wellington Channel, 78 fnis. (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. 

 (MMndrew) ! Fossil: Greenock (Ker,j^6?e Brown); Udde- 

 ^-alla (Crosskej and Robertson) ! 



Height of spire variable. The minute spiral sculpture was 

 not noticed by Brown or Moller. 



This is the Margarita ay-^entoto of Gould (1841), il/. ^Zauca, 

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

 two from the types. 



Trochus Vahli, Moller. 

 Margarita Vahlii, Moll. Ind. Moll. Grcenl. p. 8, 



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

 (Moller, Amondsen). Spitzbergen (Torell) ! 

 " One of sea's rich gems." 



Littorinidse. 



Littorina ohtusata, Linne, var. littoralis or limata. 



Godhavn and Holsteinborg. 



Nerita littoralis, L., Littorina palliata^ 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 Burton's work on Iceland. Nerita littoralis^ var. 

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

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

 morphous than L. ohtusata. 



Rissoa arenaria, Mighels and Adams. 



Cingula arenaria, Migli, & 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- 

 sha])ed, 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 Finraark (Verkriizen) ! Spitzbergen (Torell) ! 

 Bohuslan, 30—40 fms. (Lov^n, as Bissoa Jeffreysi) ! 



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



