II2 DISCOVERY REPORTS 



St. WS 750. North-east of Falkland Is., 50 50' S, 57 15' 13" W, 18-19 Jan. 1932, 95 m. 



St. WS 824. Off East Falkland Is., 52° 29' S, 58° 27' W, 19 Jan. 1932, 146-137 m. 



St. WS 865. Between Falkland Is. and Patagonia 50 03 S, 64 14 W, 29 Mar. 32, 128-126 m. 



Range. Patagonia, Burdwood Bank (Melvill & Standen, 1912) and Falkland Is., 8-196 m. 



Genus Cerithiella Verril, 1882 



n.nom. for Lovenella Sars, 1878, non Hincks, 1869 



Type (monotypy) : Cerithium metula Loven 



Strebel (1908) and Thiele (191 2) have placed a number of small Antarctic species in this Recent 



European genus. These shells conform to the genotype in having a stout, bulging, smooth proto- 



conch of about two whorls and similar apertural features, but two series are represented : ( 1 ) astrolabiensis 



Strebel, 1908, erecta Thiele, 191 2, similis Thiele, 191 2, and seymouriana Strebel, 1908, all of which 



have plain spiral keels without axials; and (2) superba Thiele, 1912, and werthi Thiele, 1912, which, 



like the genotype, have the spiral keels crossed and beaded by axials. 



The two empty shells recorded below provide no additional information concerning the relation- 

 ships of these southern groups, so Thiele 's placing is retained. 



Cerithiella seymouriana (Strebel) 



Bittium seymourianum Strebel, 1908, p. 47, pi. 4, fig. 5oa-c. 

 Cerithiella seymouriana Thiele, 1912, p. 261. 



Type locality. South-east of Seymour I., 64 20' S, 56 38' W, 150 m. 



St. WS 33. Off South Georgia, 54 59' S, 35 24' W, 21 Dec. 1926, 130 m. 



One example, 8 x 2-4 mm., compared with 8-2 x 2-9 mm. for Strebel's type. 



Cerithiella astrolabiensis (Strebel) 



Bittium astrolabiensis Strebel, 1908, p. 48, pi. 4, fig. S^a-c. 

 Cerithiella astrolabiensis Thiele, 1912, p. 261. 



Type locality. Astrolabe I., 63 ° 9' S, 58 17' W, 95 m. 

 St. 363. 2-5 miles S 8o° E of South-east point of Zavodovski I., South Sandwich Is., 26 Feb. 1930, 329-298 m. 



Strebel's type was a juvenile of five post-nuclear whorls and measured 3-3 x 1-3 mm. The St. 363 

 example, which I judge to be the adult of this species, has 9^ post-nuclear whorls and measures 

 11-5 x 3-9 mm. The species differs from seymouriana only in being proportionately broader and more 



tightly coiled. 



Family TURRITELLIDAE 



Genus Turritellopsis Sars, 1878 

 Type (monotypy) : Turritellopsis acicula Stimpson 

 Recent, North Atlantic 

 Turritellopsis thielei n.sp., PI. VII, fig. 26 



Shell with an attenuated spire of slowly increasing whorls, sculptured with prominent flat-topped 

 spiral cords, four to five per whorl. The spiral cords are separated by interspaces of about \\ times their 

 width, except for the uppermost, which has a double space between it and the suture, and the lowest, 

 which is almost joining the suture below. The body-whorl has the addition of six cords on the base, 

 but the lower two or three are weak. In the paratype, which is a young shell, the subsutural space is 

 occupied by two subsidiary linear-spaced cords, which are much weaker than the rest. Aperture 

 subcircular, the columellar-basal portion of the peristome split in two by a deep median groove. Both 

 examples have the early whorls missing. 



