

PHILINE. 13 



4, 5. Scaphander catenatus LEACH, Synops. Moll. G. B., p. 40. 

 Bullcea catena and B. catenulifera MACGILLIVRAY, Hist. Moll. Anim. 

 Aberdeen, Kincardine and Banff, p. 68, (1843). Bullcea dilatata 

 SEARLES WOOD, olim, see Crag Moll., i, p. 181, pi. 21, f. 12a-c. 

 ? Bulla angmtata Bivona, Phil., Enum., i,p. 121, pi. 7, f. 17c. ? B. 

 punctata PHIL., 1. c. ii, p. 95. (See under next species). Scaphander 

 patulus Risso, Hist. Nat. Eur. Merid., iv, p. 51. Bullcea granulosa 

 M. SARS, Beskriv. og lagttagelser, p. 75, pi. 14, f. 36, (1835). 



Some of the earlier names quoted above are more or less doubtful. 

 It is allied to P. catena, but readily distinguishable. 



P. CATENA Montagu. PI. 5, figs. 23, 24, 25. 



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 ; color 

 as in the last species ; spire extremely small, but prominent ; whorls 

 2-3, similar (except in size) to those in the last species ; suture nar- 

 row, 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) base; 

 outer lip flexuous, slightly indented or concave in the middle ; the 

 top is level with the spire, the shell being placed mouth downwards ; 

 inner corner cloven and producing the same partial disconnection 

 of the body-whorl as in the last species ; inner lip forming a broad 

 and thickened glaze. (Jeffr.). 



Alt. 2J to 4 mill. ; the larger forms from northward. 



Lofoten, Norway and British Seas south to Gulf of Gascony and 

 Canary Is.; Mediterranean and Adriatic Seas; laminarian zone. 

 Coralline Crag ; Post-pliocene of Calabria. 



Bulla catena MONT., Test. Brit., p. 215, pi. 7, f. 7. Phil ine catena 

 FORBES & HANLEY, Hist. Brit. Moll., ii, p. 545, pi. 114E, f. 6, 7 ; 

 pi. uu, f. 4. JEFFREYS Brit. Conch., iv, p. 449 ; v, p. 224, pi. 96, f. 

 2. SARS, Moll. Reg. Arct. Norv., p. 294, pi. 26, f. 6a-c. BUQ., 

 DAUTZ. & DOLLF., Moll. Rouss., i, p. 543, pi. 64, f. 21, 22. Bullcea 

 catina BROWN, Illustr. Conch. G. B., p. 57, pi. 19, f. 33, 34. Bui- 



