^89 



JOURNAL OF CONCHOLOGY. 



Vol. 14. APRIL, 1915. No. 10. 



NOTE ON MARGINELLA PERLA Marrat 

 and PUSIONELLA RECURVIROSTRIS Marrat. 



By J. R. LE B. TOM LIN, M.A. 



(Read before the Society, Feb. 6th, 1915). 



Marginella perla Marrat. 

 On p. 44 of the present volume I gave notes on several species 

 of Marginella described by Marrat. At that time the Curator of 

 the Liverpool Museum was unable to find the type of M. perla^ 

 a species described in \h& Journ. of Couch., i, p. 136. He has, 

 however, recently come across it and very kindly forwarded it 

 for my inspection. 



It proves to be identical with Af. hiplicata Krauss, described 

 from the Cape in Archiv fiir Nahirgeschichte, 1852, p. 37. 

 Watson also described this species as M. chrysea, in the " Challenger" 

 Gasteropoda Rep. (1886), from Sea Point, Cape Town, but both his 

 name and Marrat's are long subsequent to that of Krauss. Marrat 

 was unaware of the locality of his specimen. 



^Pusionella recurvirostris Marrat. 



I have also had an opportunity of comparing the unfigured type 

 of this species with the series of Pusionella in the British Museum, 

 and have no doubt that -Tryon was correct in his surmise as to 

 its identity with P. aaileiformis Lam. This species seems subject 

 to very coiisiderable variation in the extent and character of the 

 longitudinal ribbing on the upper whorls^ and forms exist with the 

 lower whorls more or less acutely shouldered i^Fiisits cateliyii Petit). 

 The dimensions of Marrat's type are — length 32 mm., diam. max. 

 12 mm. 



1 Journ. of Conch., i, p. i8o. 



2 Man. Conch., vi, p. 236. 



3 Journ. de Conch., ii, p. 75, pi. i, f. 2. 



