TURTONIA. 85 



tcrior one laminar; pallia! sinus simple. Animal with the mantle 

 widely open anteriorly, a single very slender sii)honal tube at the 

 shorter end, and an ample, angulated foot proceeding from the 

 longer end. 



Turtonia minuta. 



Shell with the beaks near the anterior end, elongated-oval, compressed, um- 

 bones deep purple, becoming pale at margin. 



Vmus minutd, 0. F.vbr. Faun. Gr. 412. 



J/yn piirpiirm, lArosT. Test. Br. Suppl. 21. — Turt. Conch. Diet. 102. — Wood, Gen. 

 Concli. 100. — DiLLW, Recent Shells, i. 46. 



Montacuta? purpurea, Hanl. Br. Mar. Conch. 25, fig. 14. 



Erijcina purpurea, Recluz, Revue Zool. 1844, 329. 



Lasma minuta, Moller, Ind. Moll. Groenl. 20. 



Saxicava purpurea. Brown, 111. Conch. Gr. Br. 103. 



Ci/aim'um ? minutum, Lovex, Ind Moll. fScandin. 42. 



Turtonia miiiufn, Ai^uim, Cat. Northumb. Moll. 95. —Forbes and Haxl. Br. Moll. ii. 

 81, pi. 18, fi.irs. 7, 7 A, and pi. O, fig. 1 (animal). — Stimi-son, Shells of New Eng- 

 land, 16. — MoLLER, Moll. Grwnl. 19. 



Shell very minute, ovate, rather convex, fragile, semi-transparent, 

 beaks at about the anterior third, elevated, inclined forwards, 

 smooth, and somewhat shining ; straw-colored, l^lend- 

 ing into dark purple at the beaks and posterior slope ; ^'°- •^^^• 



depressed in front of the beaks so that the anterior 

 portion is less elevated than the posterior, then pass- 

 ing round in a regular elliptical sweep into the ventral t. mmuta. 

 margin, which is very gently curved ; posterior dorsal 

 margin very nearly straight, towards the end sweeping somewhat 

 more raj)idly than the ventral margin, so that the end is sharper 

 than the front end, and the point below the median line. The an- 

 terior dorsal margin dilates a little so as to form a triangular jut- 

 ting just under the l)eak, and there sometimes a])pears a more mi- 

 nute one l)y the side of it ; and there appears to be a very minute 

 furrow along the posterior edge, not seen without a ])owerful mag- 

 nifier. Colors of the interior like those of exterior ; pallial line 

 without a notch. Length, about one twelfth of an inch ; height, one 

 fifteenth of an inch ; breadth, one twentieth of an inch. 



Found in crevices of shells and rocks, and among the roots of 

 sea-weeds. 



This little shell, so difficult to analyze, is recognized without 

 much difficulty by its color, which is similar to that of KelUa plami- 

 lata^ but the shell is longer and more compressed. Like other 

 shells which adbere to floating ol»jccts, it is found in widely remote 

 localities. It is found e\'erywliere in North Atlantic waters. 



