>iome new and peculiar MoUusca. 337 



Dorididse. 



Doris repanda, Alder and Hancock. 



Doris repanda, A. & II. in Ann. & Mag. Nat. Hist. ser. 1, ix. p. 32 

 (1842). 



Body oblong, lemon-coloured : mantle thickly covered with 

 small romid tubercles of different sizes : dorsal tentacles retrac- 

 tile, short, elegantly convoluted or fluted in an obliquely spiral 

 direction, one on each side near the front ; they are of a light 

 brown colour : eyes not discoverable : foot oblong : vent or 

 anal opening small, fringed. Floats on its back. Spawn 

 deposited on the stalks and fronds of Fucus nodosus. 



Godhavn, 5 fms. From Spitzbergen (KxojQx^fide Morch) 

 to Calvados in the North of France (Fischer). 



According to Loven this is the D. obvelata of O. F. Miiller. 



Doris hilamellata, Linne. 

 Doris bUamellata, Linn. Syst. Nat. ed. 12, p. 108-3 (1767). 



Body yellowish-white : mantle thick, streaked or blotched 

 with brown, and covered with numerous tubercles of different 

 sizes : head of the same breadth as the foot, and semicircular : 

 tentacles retractile, pale orange, laminated in two unequal divi- 

 sions : eyes^ none observable: foot large, rounded in front, and 

 bluntly pointed or angulated behind : vent encircled by nume- 

 rous tentacular processes which vary in size and length and are 

 retractile. Floats in a supine position. Spawn semiconvo- 

 luted. 



Station 4, 20 fms, ; Waigat Strait, at low water. Green- 

 land and Iceland to the north-west of France, and on the 

 eastern coasts of the United States. 



For the synonymy see the late Mr. Alder's remarks in 

 ^ British Conchology,' vol. v. p. 90 ; to which may be added, 

 on Morch's authority, D. muricataof M. Sars, not of Miiller. 



PTEROPODA. 



Shells of these oceanic " butterflies " were found every- 

 where during the expedition in deep water ; and a few species 

 were taken alive in the tow-net. Among the former I may 

 mention Limacina reticulata^ D'Orbigny {Spirialis clathrata, 

 Sou\ejetj = Peracle pJiysoides, Forbes, = aS'. recurvirostra, A. 

 Costa), L. haleoj Moller, L. retroversa, Fleming, and L. 

 hdimoides, Souleyet, besides well-known species of Cavo- 

 lina {Hyal(ea) and Clio (Cleodora). The only Pteropod 

 which I consider new to science will be now described ; and 



