i 3 8 DISCOVERY REPORTS 



Falsimohnia albozonata (Watson) 



Buccinum albozonatum Watson, 1882, p. 358. 



Buccinum albozonatum Watson, 1886, p. 212, pi. 13, fig. 7. 



Mangelia antarctica Martens & Pfeffer, 1886, pi. 1, figs. 5 a, b. 



Lachesis? australis Martens & Thiele, 1903, p. 62, pi. 5, fig. 18. 



Pareuthria albozonata Thiele, 191 2, p. 244. 



Pareuthria albozonata L. David, 1934, p. 128. 



Type localities. Royal Sound, Kerguelen I., 28 fathoms {albozonatum) ; South Georgia {antarctica) ; 

 Kerguelen I. {australis). 



St. 123. Off mouth of Cumberland Bay, South Georgia, from 4-1 miles N 54 E of Larsen Point to 1-2 miles S 



62 W of Merton Rock, 15 Dec. 1926, 230-250 m. 

 St. 140. Stromness Harbour to Larsen Point, South Georgia, from 54 02' S, 36° 38' W to 54° 11' 30" S, 



36 29' W, 23 Dec. 1926, 122-136 m. 

 St. 149. Mouth of Cumberland Bay, South Georgia, from 1-15 miles N 764° W to 2-62 miles S 1 1° W of Merton 



Rock, 10 Jan. 1927, 200-234 m. 

 St. WS 25. Undine Harbour (north), South Georgia, 17 Dec. 1926, 18-27 m - 



Dentition. Fig. K, 59 (St. 149); Fig. K, 60, p. 193 (after Marten's (1903) for Lachesis} australis). 

 Operculum. Fig. N, 127, p. 196. 



The shallow-water St. WS 25 example has the typical colour pattern — brownish with a median pale 

 spiral band, but material from the deeper water stations is uniformly buff. 



Genus Glypteuthria Strebel, 1905 

 Type (s.d. Tomlin 1932): Euthria meridionalis Smith 



The shells of this genus differ from those of Pareuthria in having more obvious sculpture, composed 

 of equally well-developed spiral and axial ribs. Thiele (1929, pp. 311-18) associated Glypteuthria and 

 Probuccinum, but disassociated them from Pareuthria, which he made a subgenus of Northia. I cannot 

 understand Thiele 's action in doing this, for there is no evidence against the view that Glypteuthria is 

 a strongly sculptured relative of Pareuthria, apart from the fact that the lateral teeth in Glypteuthria 

 are not strictly bicuspid. In Pareuthria the laterals are bicuspid, but in Glypteuthria meridionalis 

 bifurcation of the inner cusp results in a third incipient cusp, but this condition is not comparable with 

 that of Probuccium, in which there are three strongly developed and evenly spaced cusps. 



The distribution of Glypteuthria, previously considered Magellanic, is now known to extend to 

 South African waters, i.e. capensis (Thiele, 1925, p. 179) capensis* and solidissima (Tomlin, 1932, 

 pp. 164-7). The Magellan species are meridionalis Smith, 1881, kobelti Strebel, 1905, and acuminata 

 Smith, 191 5. 



Glypteuthria meridionalis (Smith) 



Euthria tneridionalis Smith, 1881, p. 29, pi. 4, fig. 6. 



Euthria meridionalis Rochebrune & Mabille, 1889, p. 61. 



Euthria {Glypteuthria) meridionalis Strebel, 19056, p. 627, pi. 21, fig. 1 1 a, h. 



Glypteuthria meridionalis Thiele, 1912, pi. 13, fig. 6 and pi. 16, fig. 17. 



Type locality. Portland Bay, St Andrew's Sound, 10 fathoms, Patagonia. 

 St. WS 834. Near eastern entrance to Strait of Magellan, 2 Feb. 1932, 27-38 m. 



Dentition. Fig. K, 58, p. 193 (after Thiele, 1912, loc. cit.). 



* Renamed Glypteuthria sculftturata, Tomlin (1945). 



