334 MESSES. MELVILL AND STANDEN ON [June 18, 



1896. Smith (Edgar A.). — Descriptions of new Deep-Sea Mollusca. 

 Ann. Nat. Hist. [6] xviii. p. 367 sq</. 

 \_Natica abymcola described from Cutch.] 

 1899. In. — Natural History Notes from H.M. Indian Marine 

 Survey Steamer ' Investigator,' Commander T. II. Heming, 

 B.N. — No. I. On Mollusca from the Bay of Bengal and 

 the Arabian Sea. Ann. Nat. Hist. [7] iv. pp. 237-251. 

 [Mostly from South Indian Ocean.] 

 1894. Sowerby (George B.). — Descriptions of nine new Species of 

 Shells. Proc. Mai. Soc. Lond. i. pp. 214-217. 

 [C'onus elegans from Persian Gulf, Pecten toivnsendi and Shmetta 

 fcwachensis from Karachi, all collected by Mr. F. W. 

 Townsend, described.] 



1894. In. — Descriptions of four new Species of Shells from the 



Persian Gulf and Bay of Zaila. Op. cit. i. pp. 160-161, 

 1 plate. 

 \_CanceUaria paucicostata, Donax town$endi.~\ 



1895. Id. — New Species of Shells from Karachi and the Mekran 



Coast collected by Mr. F. W. Townsend. Op. cit. i. 

 pp. 278-280, 1 plate. 



\_Alangilia townsendi, Bullia nitida, Niso venosa, Enida toivns- 

 endi, Minolia gradata, Spondylus e.vilis, and Meretrix tumida.~\ 

 1856. Woodwaed (S. P.). — A Catalogue of Mollusca collected at 

 Karachi by Major Baker, 1850; numbering about 100 

 species. Manual of the Mollusca, ed. ii. p. 73. 



[This catalogue is also given in full by P. Fischer (Man. de 

 Conchyliologie, p. 100, 1887.] 



We have restricted the area embraced in these investigations to 

 the entire Persian Gulf, Gulf of Oman, and that portion of the 

 Arabian Sea lying north of an imaginary line running obliquely 

 from Ras-el-Hadd, S.E. of Maskat. to Panjim on the Indian coast '. 

 This will include not only Bombay and Eatnagiri, but also the 

 Anurias Bank and that portion of the Eastern Telegraph Co.'s Cable 

 that was examined by Mr. Townsend and Captain Tindall in 1899, 

 with such very successful results. Since the coasts of Arabia, from 

 Ach-n to Ras-el-Hadd, with its contiguous seas, have not yet been in 

 the least explored scientifically.it seems useless to propound Lat.l5° 

 N. as the boundary, as we had at one time contemplated. 



We would further, for the sake of convenience, propose three 

 subdivisions, as follows : — 



(i) P.G. The whole Persian Gulf, including the Gulf of Oman, 

 with Maskat and Jask, bordered to the East by Loug. 59° 

 48' E. 

 (ii) M.C. The Mekran Coast of Persia and Baluchistan, between 



Long. 59 48' E. and the River Hab. 

 (iii) I. The Coast of Continental India, from East of River Hab, 

 abutting on Karachi, sav, Long. 66° 40' E., S.E. to Panjim, 

 Lat. 15° 50' N., Long. 74 E. 



1 From Lat. 22° 34' N., Long. ol° 48' E. v, Lat. 1.3 .V)' N., Long. 74° E. 



