PHILINE. 449 



Turton) gave it the name of S. catenatus; it is the 

 BuIIcea granulosa of Sars, partly the Bullosa angustata 

 of Philippic Bullcea catena and Bullosa catenuliftra of 

 Macgillivray, and Bulla dilatata of S. Wood. 



P. lima ( Utriculus Lima) of Brown is stated by him 

 to have been fonnd by Mr. Stewart Kerr at Greenock ; 

 and it would therefore be a glacial fossil of the Clyde 

 beds. It is allied to P. scabra, but differs from that 

 species in having a smaller and compact crown, a more 

 produced spire, and a less patulous mouth. It is the 

 Bulla lineolata of Couthouy, and probably the Bullcea 

 punctata of Moller (not of Clark), its existing distribution 

 being confined to the eastern coasts of North America 

 and to Greenland. 



2. P. cate'na*, Montagu. 



Bulla catena, Mont. Test. Br. (i.) p. 215, t. 7. f. 7. P. catena, R k H. 

 iii. p. 545, pi. cxiv. e. f. 6, 7, and (animal) pi. UU. f. 4, as Bullcea catena. 



Body on the upper part yellowish-white ; the shield or 

 anterior portion, and the lateral lobes caused by the reflexion 

 of the foot on the back, are sprinkled with close-set very 

 minute reddish-brown points ; the posterior part of the body 

 is divided into one or two digitations. (Clark.) 



Shell oval, compressed and expanding outwards, of delicate 

 but not fragile texture, semitransparent and glossy : sculpture, 

 numerous and close-set spiral rows of minute links, arranged 

 in a chain-like fashion, which vary in shape from roundish- 

 oval to oblong, besides occasional intermediate lines as in 

 P. scabra ; the edge of the mouth (especially at its base and 

 on the upper part of the outer lip) is finely scalloped by the 

 continuation of the spiral sculpture: colour as in the last sj>ecies : 

 spire extremely small, but prominent : ivhorls 2-3, similar 

 (except in size) to those in the last species : suture narrow, 

 deep, and channelled : mouth equalling about three-fourths of 

 the circumference of the shell, broadly oval, contracted above 

 by the periphery, with a bluntly rounded (or almost truncated) 



* From its chain-like sculoture. 



