1901.] MOLLUSKS FROM THE PERSIAJST GUIiP. 415 



Ctllejste geati Eve. 



M.C. Charbar Bay. Sand, 4-8 fathoms, with C. fuscata. 

 These two species, indeed, may be only varietal forms, the latter 

 (grayi) being as a rule longitudinally plicate, while the former is 

 nearly smooth, the tessellated painting being in both identical. 



Fam. BucciNiD^. 

 PiSANiA iGNBA G-mel. 



M.C. Not abundant, but locally found at Charbar, Gwadur, 

 and Ormara. 



Teitonidea EAwsoiiri Melv. 



Sistrum raivsoni Melv. Mem. Manch. Soc. vol. xli. partiii. no. 7 

 (1897), p. 5, p]. 6. fig. 3. 



P.G. Shaikh Shuaib I. On telegraph-cable, lat. 2T N., long. 

 52° E. From 30 to 50 fathoms, amongst shell-growth. 



This is one of those species on the border-line of at least three 

 other genera: e. g., Engina, Sistrum, and Cantharus (Tritoniclea). 

 We follow the arrangement by Mr. Edgar Smith in our National 

 Collection. It was named after the late Sir Eawson W. Eawson, 

 K.C.M.G., a friend of both Mr. Townsend and the authors, who 

 took a very great interest in the results of the dredging of the 

 Persian Gulf and Arabian Sea. 



Teitonidea EUBiGnsrosA Eeeve. 

 I. Bombay (Ahercrombie). 



Teitonidea spiralis Gray. 



M.C. Abundant everywhere between tide-marks, usually 

 amongst loose muddy rocks. 



I. Bombav {Ahercrombie). Karachi, common. Near Goa 

 (Lt.-Col. H. D. Olivier). 



Teitonidea tissoti Petit. 



I. Karachi. Bombay (Ahercrombie as Purpura). 



Yery common on rocks at low tide : the generic position of this 

 species being much contested. By some authors it is included in 

 Purpura, while Pisania and Tritoniclea {Cantharus) present almost 

 equal claims to it. 



Teitonidea undosa L. 



M.C. Abundant amongst loose muddy rocks from half-tide to 

 low-water mark, along the whole range of the W. coasts of India 

 proper and Baluchistan, to Persia. We, however, have no exact 

 records from the Persian Gulf. 



I. Karachi. Not mentioned in Melvill and Abercrombie's 

 Bombay Catalogue. 



Metula teijfasciata Sowb. 



P.G. A very elegant shell, -Dop^weZZa-shaped, finely decussate, 

 stramineous, thrice-banded on the body-whorl with reddish brown. 

 The type was described from China. 



