Dr. J. E. Gray on the Bitentaculate Slug from Aneiteum. 195 



Haughton, and a large and splendid example of it is in Mr. 

 Theobald's collection. 



Pfeiffer mentions that a small nnbanded variety of my Bulimus 

 Sinensis (' Annals/ April 1851), of which the original specimen 

 was obtained by the lamented Dr. Theodore Cantor * from 

 Southern China, occurs at Mergui. Capt. Haughton obtained 

 the larger 2-banded variety at Sheoay-Gheen in Pegu. 



ChelteDham, July 31, 1860. 



XXVIII. — On the Bitentaculate Slug from Aneiteum, 

 By Dr. J. E. Gray, F.R.S., V.P.Z.S. &c. 



In the 'Annals and Magazine of Natural History/ ser. 2. 

 vol. xviii. p. 41, Mr. J. D. Macdonald describes and figures a 

 bitentaculate Slug from the island of Aneiteum, which Mr. Mac- 

 gillivray thought might be a species of Janella. Mr. Macdonald 

 clearly proves that his Slug can have but very little affinity 

 with that genus. 



The distinction between them has been further proved by the 

 publication of figures of the living Janella, with its jaw, tongue, 

 teeth, and other organs, by Mr. Knight, in the ( Linnsean Trans- 

 actions/ vol. xxii. p. 381, t. 66. 



We have lately received several specimens of a Slug from New 

 Caledonia, which so closely resembles the one described and 

 figured by Mr. Macdonald, that I am induced to believe it is 

 the same species. 



I may state that it has no relation with my genus Janella 

 further than belonging to the same Phytophagous group of the 

 order, and that I am inclined to regard it as the type of a new 

 family nearly allied to Limacina. 



This family (Aneiteadce) may be distinguished from Lima- 

 cina by the small size of the mantle, which is most dilated on 

 the right side, and in the front end being attached to the body, 

 and not a free flap as in the true Slugs ; in the entire absence 

 of tentacles, there being only two elongated retractile eye- 

 peduncles ; in the head being furnished with a deep groove on 

 each side above, arising from the sides of the front end of the 

 mantle, diverging to the outer side of the eye-peduncles, and 

 continued to the swollen upper edge of the mouth. 



It also differs from the Slug (Limasc) in the back having a central 

 longitudinal groove, from each side of which diverge lateral 



* Dr. Cantor died at sea, whither he had been sent from Calcutta for 

 change of air, in March last. He was indefatigable in his profession ; and 

 his researches have added largely to our knowledge of the natural history 

 of Asia. 



