THE NAUTILUS. 75 



may be of interest. One of the most exhaustive treatises dealing 

 with molluscan life in these waters may be found in the proceedings 

 of the Zoological Society of London, 1891, part iii. In this paper 

 Mr. E. A. Smith lists the collections made at Aden by Major 

 Yerbury and the Rev. Mr. Baynham. Mr. Smith also gives a 

 review of the principal collections previously recorded from Aden. 

 Signor Caramagna, Dr. Jousseaume and the Rev. A. H. Cooke 

 reported on mollusks from the vicinity of Aden. After the appear- 

 ance of Mr. Smith's paper Commander E. R. Shopland was appar- 

 ently the next person who collected extensively at Aden. His field 

 work was accomplished between 1892 and 1901. An account of the 

 results may be found in the Proceedings of the Malacological Society 

 of London (Vol. 5 page 171"). 



My best thanks are due Mr. Eagle Clarke of Edinburgh and Mr. 

 E. A. Smith of London for their kindness in supplying data, with- 

 out which it would have been impossible to prepare this paper. 



Sepia rouxii D'Orb. According to Tryon this cephalopod in- 

 habits the Red Sea and Indian Ocean. It is thus natural to find it 

 in the Gulf of Aden, which connects the two. 



Conus amadis Auct. 



Conus betulinus L. 



Conus cuvieri Crosse. As Mr. E. A. Smith writes, this species 

 is not identical with C. cervus. In my opinion cuvieri is a distinct 

 species. 



Conus nussatella L. 



Conus taeniatus Hwass. 



Conus textile L. 



Te.re.bra cafrulescens Lk. 



Terebra cinerea Born. 



Terebra clarkei n. sp. Plate IV, fig. 18. 



Shell slender, shining, suffused irregularly with golden brown ; 

 whorls 9-10, somewhat gradually increasing, distinctly rounded ; 

 apex acute, darker in color; surface closely plicated, forming on the 

 earlier whorls slightly crenulated sutures, plications extending to 

 the base ; distinctly three banded, the two lower bands closer 

 together ; aperture long. 



This species comes in the same section of the genus as T. nitida 

 Hinds. From Terebra celidonota Melvill & Sykes it differs in being 

 more slender. The aperture is also longer and there are three spiral 



