i 7 8 DISCOVERY REPORTS 



Philine cf. kerguelensis Thiele 



Philine kerguelensis Thiele, 1925, p. 279 (245), pi. 32, figs. 22, 22a. 



Type locality. Kerguelen I. 

 St. WS 219. North-west of Falkland Is., 47 06' S, 62 12' W, 3 June 1928, 116-114 m. 



Height 2-8 mm. ; diameter 2-0 mm. (holotype). 

 Height 6-o mm. ; diameter 4-2 mm. (St. WS 219). 



The shells from St. WS 219 seem to represent fully grown examples of Thiele's species, which is 

 rather distinctive with its planorbid spire, finely spirally punctate surface striations and rather deep 

 posterior sinus. 



The animal exhibits the usual Philinid characteristics of a large, oblong, head disk without eyes or 

 tentacles, and three large lozenge-shaped calcareous gizzard plates. These plates have a sharply raised 

 cigar-shaped external central area surrounded by a rounded rim ; the inner surface is plain and convex. 

 The plates are enormous for the size of the animal, 4 mm. long in an animal with a shell of 6 mm. 

 height. 



Dentition. Fig. M, 95, p. 195. The radula consists of the first lateral only, which is claw-shaped with 

 minute serrations on the concave side. These laterals are very similar in form and detail to those of the 

 genotype. Some species of Philine have the addition of up to six marginals. 



Philine falklandica n.sp., PI. VII, fig. 24 



Shell small, white, semi-pellucid, ovate-rhomboidal with a very large aperture; outer lip slightly 

 taller than the spire and reaching the sunken inrolled apex by a broadly convex but deeply sinused 

 curve ; basal lip broad and flattened. Dorsally there is a slight constriction just below the shoulder. 

 The surface is delicately sculptured with dense, very regular, minutely granulated, axial lirations. 



Height 4-9 mm.; diameter 3-9 mm. (holotype). 



Type locality. St. WS 219. Between Falkland Is. and Patagonia, 47 06' S, 62 12' W, 3 June 



1928, 116 m. 



St. WS 210. North of Falkland Is., 50 17' S, 6o° 06' W, 29 May 1928, 161 m. 

 St. WS 215. North of Falkland Is., 47 37' S, 6o° 50' W, 31 May 1928, 219 m. 

 St. WS 225. Between Falkland Is and Patagonia, 50 20' S, 62 30' W, 9 June 1928, 162 m. 



The distinctive axial sculpture should make this species easily recognizable. The calcareous gizard 

 plates are minute, irregularly oval bodies only 0-4 mm. long in a shell measuring 5-4x3-9 mm. 



Dentition. Fig. M, 94, p. 195. There is no central tooth but a massive hooked lateral with minute 

 serrations along the median section of the upper cutting edge and two moderately large marginals 

 shaped like conventional finger-pointers. 



Family SCAPHANDRIDAE 



Genus Kaitoa Marwick, 1931 



Type (o.d.) : Kaitoa haroldi Marwick 



Apart from much weaker spiral sculpture the South Georgian species described below has the 



essential shell characteristics of the New Zealand Miocene Kaitoa. The dentition shows that it is not 



far removed from the Boreal Bullinella alba (Brown). 



Both genera are cylindrical with an involute spire, but Kaitoa resembles Scaphandra in having 

 a smooth, concave columella, margined by a deep groove, and Bullinella ( = Cylichna) has a slightly 

 twisted, more or less vertical columella bearing a single oblique plait. 



