144 PKOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



RosTANGA EvANsi, n.sp. PI. XIV, Figs. 6a-6c. 



Mr. Crossland's notes on the living animal are as follows : — 



"Of a light violet grey. Back covered with minute papillae. 

 Numerous round darker spots, edged with a whitish line, looking 

 exactly like pits, but, when touched with a needle, seen to be in same 

 plane as rest of surface. These are largest where the mantle passes into 

 the visceral hump. A few papillae are longer than the rest, and opaque 

 white. Rhinophores also largely white, and a row of white dots is 

 placed round the mantle-edge Gills simply pinnate and of fair size, 

 9 in number, of same colour as the body, with pointed ends. They are 

 symmetrically placed round the anus. 



"Rough and rather stiii. May be flat in shape, or may take on 

 a high form with flat back. Mantle ample. Foot moderately broad ; 

 grooved and notched ; very strongly adhesive ; whitish in colour. 



"Aug. 11th. A small damaged specimen presumably of same 

 species. 



" Aug. 17th. St. Vincent. Small specimen from the bottom of the 

 lighter." 



The specimen dissected is 1 4 mm. long, 9 broad, and very flat. 

 The ample mantle completely covers the foot, and is in some places 

 3-5 mm. wide. Tlie foot, as preserved, is not very distinctly grooved, 

 and has expanded lateral margins. No tentacles were found. The 

 texture is fragile and spiculous. The back is covered with papillae 

 about a quarter of a millimetre high, generally slightly broader at the 

 top than at the base. Each papilla is supported by a bundle of 

 spicules, set within it vertically, three or four of which project from 

 the top. The intervening dorsal surface is also crowded with spicules. 

 The spicules are all colourless straight rods. 



The labial armature consists of yellowish rods, somewhat curved, 

 with thickened ends. The radula is fragile and difficult to keep 

 together. It seems to consist of 18 rows, with a formula of 20 . . 20 

 or less. Tlie innermost teeth are comparatively small ; those in the 

 middle of the half-rows are taller (Fig. 6a). Near the end of the row 

 are about five long and very thin teeth (Fig. 6b), but the tw^o or three 

 outermost are shorter, though thin, and bear 2-3 longish denticles 

 below the tip (Fig. 6e). 



No armature was found in the i-eproductive organs. 



The largest specimen (15mm. long by 9mm. broad) looks somewhtit 

 different, as the dorsal papillae are relatively much longer and more 

 conspicuous in the smaller specimens. But though the back of this 

 larger specimen appears to be merely minutely granulate, the 

 structure of the granulations and spicules is the same as in the others. 



Cadlina Clar^, von Ihering, juv. PI. XIV, Figs. 7a-f. 

 Cadlina Clarce, von Ihering: Malac. Blatt., 1880, vol. ii, pp. 107-110. 



Mr. Crossland's notes on the living animal are as foUows : — 



" Dorid, minute white. 



" Among washings of Nullipore nodules and coal, 5 fathoms or 

 thereabouts. Oblong shape, narrow mantle, and high foot like 

 Chromodoris. 



