On some new and jk'CuUui' Mullusca. 231 



\'iir.= 7'. castinwa, Kiencr, /. c. pi. 7. f. 14. 



Var.= 7'. laiiriua. Hinds, Tlitsjiurns Conch, i. pi. 42. f. 27. 



\nr.= T. stylata, Ilind.x, /. c. pi. 44. f. 7'.>. 



Var.= T.jamaiceusis, C. 13. Adauis, Contrib. Conchul. i. p. 58, 



Hub. West Itulies. 



XIX. — Xtw and peculiar MoUusca of the Patellidse and other 

 Families of OiUitropoda procured in the ' Valorous ' Expe- 

 dition. ]jy J, GwYN Jeitkuys, LL.D., F.R.S. 



Patellidse. 



Tectura rubella^ Fabrlcius. 

 Patella rubella, Fabr. Fu. Gr. p. 380. 



Body greyish-white, witli numerous and close-set bro^vnish 

 streaks in front : head semicircular : mouth concave, opening 

 horizontally, and puckered : mantle thick : tentacles awl- 

 s]ia])ed, contractile, with blunt tips : eyes small, black, sessile 

 on the tentacles at their outer base : foot oval. Sluggish. 



Godhavn, 5-20 fms. ; Station 4, 20 fras. ; 5, 57 fms. 

 (dead) ; Holsteinborg, 3-12 fms. Greenland (Fabricius and 

 others). Spitzbergen (Torell) ! Tromso, Norway (M. 8ars). 

 Labrador (Packard, jide Whiteaves) ; Newfoundland (Ver- 

 kriizen) ! 



Young shells have a butotn-shaped (and not a spiral) apex, 

 which turns to the broader and longer end, as in Lejjeta j but 

 in the latter genus the apex is spiral. The apex is strongly 

 striated lengthwise, and resembles that of Ancijlus. 



In a Greenland specimen, which I received from Dr. 

 Murch, I found two fry with perfect shells enclosed in the 

 concavity of the foot. Perhaps T. rubella may be the type of 

 a distinct genus (say Ertjinus, from one of tlie Argonauts). I 

 see no reason for changing tlie opinion which I expressed in 

 the third volume of 'Britisli Conchology,' p. 246, for retaining 

 the generic name Ttctura in preference to tlie later and objec- 

 tionable name Acnuca, although Mr. Dall and the Kov. J. E. 

 Tcnison Woods prefer to use Acmoia. 



Lepeta cceca, O. F. Miillcr. 



Patella caca, O. F. Miiller, Zool. Dnn. Trodr. p. 237. no. 28G(5. 



Body of a pale yellowish colour, pinkisli about the head : 

 mouth round, opening vertically : mantle thick : tentacles awl- 

 shaped, and thick : eyes none : foot oval, stout. 



