MALACOZOA. GASTEROPODA. CIRROBRANCHIATA. 199 



the colour yellowish-white. Length nearly an inch, breadth 

 nearly half the length. 



The above description from two specimens found by Mr. 

 Leslie on the coast of Kincardineshire. 



Doris bilamellata. Linn. Syst. Nat. 1083. Doris fusca. Larak. 

 Syst. vi. 1. 312 ; Ed. 2. vii. Doris verrucosa. Penn. Brit. Zool. 

 iv. 43. PI. 21. f. 23 ? Doris verrncosa. Flem. Brit. Anim. 282. 

 Doris bilamellata. Johnst. Ann. of Nat. Hist. i. 53. 



4. Doris dspera. Rough Doris. 



Body ovato-elliptical, very convex above, and covered with 

 rather large, nearly equal, round tubercles ; the margin of the 

 mantle thick, not extending far beyond the foot, and at its 

 fore part crenate ; the foot ovato-oblong, somewhat repand 

 before, obtusely pointed behind ; the two upper tentacula dis- 

 tant, subcylindrical, obtuse, rugoso-granulate ; the two lower 

 very small, approximated ; the space over the mouth granu- 

 lated ; the mouth transversely oblong, small, close to the edge 

 of the foot; branchial tufts of about ten small pectinated 

 laminae, disposed in a circle and retractile ; the space between 

 the mantle and the foot minutely granulated ; the colour 

 hyaline-white ; the upper tentacula with a faint tinge of a red- 

 dish-yellow. Length of an individual nearly half an inch, 

 breadth two-and-a-half twelfths, height two-twelfths and a 

 fourth. 



Found by me in September, 1842, n fuel cast on the 

 sands, near Don mouth, and at the Black Dog of Belhelvie. 



Doris aspera ? Alder and Hancock. Ann. and Mag. Nat. Hist. 

 ix. 30. 



ORDER IX. GASTEROPODA CIRROBRANCHIATA. 



Respiratory apparatus composed of tufts of tentacular 

 filaments situated on the sides of the neck. 



FAMILY I. DENTALIINA. 



Animal much elongated, conical, covered with a conico- 

 tubular shell, open at both ends. 



GENUS 1. DENTALIUM. TOOTH-SHELL. 



Animal much elongated, conical, covered with a long 

 tapering, slightly curved shell, the dorsal surface of the 



