256 JOURNAL OF COiN'CHOLOGY, AOL. II, NO. '8, OCTOBER, I905. 



Twenty-three specimens, apparently from Karachi, though the 

 locality is not stated. They vary in length from i cm. to 3.5 mm., 

 and in most the back is strongly arched, perhaps merely as a result ot 

 contraction. The red colour is still visible in a few specimens, and 

 from their all being put together under one heading, it may be 

 assumed that they were all of much the same colour in life. As 

 preserved they are mostly purplish grey, with various lighter and 

 darker mottlings of the same colour. The characters correspond 

 with previous descriptions. The texture is smooth and flabby. The 

 edges of the mantle and foot are thin, moderately wide, and much un- 

 dulated. The branchiae are set very far back, and the pocket as 

 preserved is very shallow. The anterior margin of the foot appears to 

 be indifferently either grooved or entire. 



Doridopsis nigra (Stimpson). 



Alder & Hancock, "Notice coll. Nudibr. made in India," p. 128 ; 

 Bergh, " Mai. Untersuch.," Semper''s Reisen, xvii., p. 964 ; Eliot, 

 " Nudibranchs, from E. Africa and Zanzibar, VI.," i>^r. Zool. Soc, 

 1904, vol. 2, p. 275. 



The collection contains only one individual, but, as it is described 

 as "a small specimen of a common species," the form is probably 

 abundant in these waters, as it is in most parts of the Indo-Pacific. It 

 is II mm. long and 8 mm. broad. The living animal is said to have 

 been black or very deep purple, with a deep crimson line near the 

 the edge. This probably means a line round the mantle margin. If 

 so it has disappeared, but the margins of the foot have a distinct light 

 border. The surface is quite smooth without tubercles and the 

 branchiae are six. The animal should probably be classed under the 

 variety of this polymorphic species known as van atroviridis, although 

 the hitherto recorded specimens of that variety had spotted backs. 



The collection also contains two specimens possibly referable to 

 this form noticed by me {loc. cit.) already. The integuments are 

 extremely thick and tough, and I doubt if the animals are really D. 

 7iigra, but without a fuller account of their characters when alive it is 

 impossible to be certain. 



Faunistic Notes. —I found Spkierinin laciistre in abundance dead on the dried 

 mud of a small pond, on a village green near Coldred, in Kent, on high ground 

 far from water. No other molluscs were seen. The pond seemed too small and 

 too close to houses to have been visited by wild fowl. I have found Stenogyra octona 

 fairly abundant and breeding in the Tropical Fern Houses at Kew. I believe Mr. 

 Sykes exhibited some from the forcing pits there some fourteen years ago. It seems 

 quite established there. The colony of Titrricola tei-resiiis, near Dover, is flourish- 

 ing, though it does not seem to have extended its limits much. — [Rev. Canon] 

 |. W. HORSLEV {Read before the Society, September ijlh, 1905). 



