\^ MKI.VII.t. AND STANKI-N ; MARINK MOLLUSCA OI MAHKAS. 



Sanguinolaria hendersoni n. sp. (PI. I., fig. 7). 



S. testa tenui, fere Levi, si//>>iitida, obscure concentrice inceqnaliier 

 striata ; ra/vis fostiee et antice />au/lu/um hiiilcis : inar^:^ine posiico 

 suhtrapezoide, paullitm producto ; antico prolon^i^ato, totundato, ven trail 

 recti usculo .• dorsali Ic niter utrinqiie declivi ; umbonibiis Ixvibus^ toseis, 

 catera sitperficie pallidt rosea. Lo/i<^. 23, lat. 35 ;/////. 



A beautiful addition to a circumscribed genus. To no known 

 species does it nearly assimilate, save in colour, coming perhaps 

 nearest to the West Indian S. satiguinolejtta Gm., which, however, 

 is far more produced and gaping posteriorly. The type, from Mr. 

 Henderson's collection, is of the dimensions given above, but three 

 other specimens, smaller but quite perfect (long. 20, lat. 32 mm.) 

 exist in J. C. Melvill's collection, which were obtainel at a sale at 

 Stevens' auction rooms, in Dec, 1866, without label of locality. We 

 have much pleasure in naming this species after its discoverer. 



(II.) GENERAb CATALOGUE. 



We have carefully compared the following list with that' compiled 

 by Mr. Edgar Thurston, C.M.Z.S., Superintendent of the Madras 

 Government Museum, when investigating the Zoology of Ramesvaram 

 Island, and the Gulf of Manaar, Ceylon, and find 106 species in 

 common. Probably the very few of Mr. J. R. Henderson's MoUusca 

 collected at Pamban, were obtained about the same time as Mr 

 Thurston's; the majority gathered 250 miles further north show on 

 the whole a great dissimilarity. 



Mr. Thurston's catalogue enumerates about 425 Marine Mollusca, 

 inclusive of a few brackish water or fluviatile forms, such as 

 Tyinpanofonos, Potainides, and AfelaniiB, from Pamban and Tuticorin, 

 which we have not mentioned though ihev occurred in Mr. 

 Henderson's gatherings. Like ourselves, he has not attempted 

 differentiation of the Chitonida^. Our two species, both small and 

 insignificant, are probably new, for as Mr. E. R. Sykes informs us, no 

 Chitonidae are yet recorded from Madras. 



Among>t Mr. Thurston's more interesting records we note Conns 

 /orii^uriojiis Kien., which has lately occurred on the Malabar Coast 

 (i'ownsend), C. peplum Chemn., from Muttuwartu ; Mitra zelmensis 

 Rv., from the same place, this being one of the finest of the genus, 

 also J/, acupicta Rv., Cypnea lentiginosaV.. (also found along the whole 

 \\. Coast of Hindustan) Pterocera scorpio L., Ovnhim formosum Ad. 

 Rv., and others. We should hoi)e that many of these will ultimately 

 be found to reach the vicinity of Madras. 



That portion of Mr. Thurston's preface which gives a glimpse of 

 the appearance of the Madras coasts, is interesting, and well worth 



I Bull. Mus. Matiras, Xo. 3, 1895. 



