342 Mr. E. Diiprey vn Jersey Littoral Shells. 



Littorina obtmahx, L. Of all colours, and sometimes with bands. 

 In a small aquarium I have kept a specimen for some mouths 

 which has three tentacles and three eyes. The middle tentacle 

 is bifid ; and the eye bchiud it is double or formed of two little 

 black dots adhering to each other ; the two other or normal eyes 

 are simple. 



nerituides, L. 



riuUs, Matou. Of all colours, with and without bands. 



, var. tenebrosa, Mont. Living with Lascta ruhra amongst 



Lichimt, and not more than about ^L. of an inch long. When 

 kept with L. riulis of the same size, it was soon outgrown by the 

 latter. 



Utorea, L. This edible species is now more rare in Jersey 



than liissoa ladea. 



Jiissoa striatnia, Mont. Under stones, not uncommon. 



ladta, Michaud. Xot uncommon in Jersey in stony ground. 



I liave found it living at Pointe des Pas, Samares Bay, and La 

 Koccjue ; its habitat is peculiar — adhering to the under surface of 

 stones Avhich are buried several inches, and often very firmly, in 

 clayey sand. Rissoa striatnia and Adeorbis suhcannatus are also 

 found with it, and rarely Area lactea. It seems difficult to under- 

 stand how they can live there ; for often the stones, although 

 weighing but a few pounds, are difficult to turn over, so tightly 

 are they imbedded. 



— — coslaia, Adams. Not common. 



jjarva, Da Costa. Abundant. 



, var. interrtipta, Adams. Rare. 



memhranacea, Adams. 



violacea, Desm. Two very distinct sizes. 



costulata, Alder. Two distinct sizes and three different types : — 



(1) Entirely white. Eare. 



(2) Brown nearly all over (except a white rib near the 

 mouth), of different shades and forming zigzag streaks. 



(3) White, Avith the mouth and longitudinal furrows between 

 the ribs brown. Common. 



striata, Adams. 



scmistriata, Mont. Rare. 



cingillus, Mont. 



• , var. riipestris, Forbes. 



Barleeia rubra, Mont. 



-^ , var. unifasciata, Mont. 



, var. pallida. 



Skenea planorhis, Fabr. Gregarious in shelly gravel, with Astarte 



triangidaris, at La Rocque. 

 Hornalorfi/ra atomus, Phil. 

 Scalaria communis, Lam. Lining amongst sand and Zostera ; lower 



part of the shell often buried in the sand. Coloured bands some- 

 . times absent. 



Odostomia pallida, Mont. Under stones. 

 acuta, Jeff. Under stones. 



