LAGENIDAE 145 



with a dense pile of very fine hairs, the flattened ends of which constitute the smooth 

 outer covering of the test. The " minute pores " to which Sidebottom refers are probably 

 the spaces between the hairs when the outer layer has been broken. My specimens 

 show all stages in the disintegration of this outer spongy layer. 



Millett's species was originally described from shallow water in the Malay Archi- 

 pelago, and I know of many records from shallow water in the Indo-Pacific region. 

 Sidebottom records it from deep water in the south-west Pacific {ut supra), and from 

 thence its passage to St. 386 can be directly connected with the Pacific current passing 

 through the Drake Strait. But the occurrence of the species in genuinely Antarctic 

 surroundings at St. WS 505 and WS 507 b above 70° S latitude is somewhat surprising, 

 and points to an influx of Pacific water into the Bellingshausen Sea. 



320. Lagena clathrata, Brady (F 243) (SG 206). 

 One station: WS 205. 



Only a single specimen, quite typical in form but with finer and more numerous 

 costae across the face of the shell than is usually the case. The varieties found in the 

 Falklands and South Georgia areas were not met with in the Antarctic material. 



321. Lagena clavata (d'Orbigny) (F 178). 

 Two stations: 170; WS 482. 



Only a single specimen at each station. 



322. Lagena clavulus, Heron- Allen and Earland. 



Lagena aspera var., Sidebottom, 1912, etc., LSP, 1913, p. 167, pi. xv, figs. 12, 13 (only). 

 Lagena clavulus, Heron-Allen and Earland, 1922, TN, p. 145, pi. v, fig. 7. 



One station: 386. 



A single specimen only from 4773 m. and outside the Antarctic convergence line. The 

 original type, with which it conforms, was from 951 fathoms off Oates Land in the Ross 

 Sea, but the specimens from the south-west Pacific (subtropical) figured by Sidebottom 

 {ut supra) appear to be identical with our species. 



323. Lagena clowesiana, nom.n. (Plate VI, figs. 41, 42). 



Lagena semicostata, Sidebottom {noii Seguenza), 1912, etc., LSP, 1912, p. 427, pi. xxi, fig. 13. 



Three stations: 384, 385 ; WS 403. 



Test compressed, irregularly ovate, wedge-shaped ; central and upper portion of the 

 test hyahne; fine, parallel costae encircle the sides and basal half of the test. At the 

 base the two sets of curving costae are separated by a slight median bar. 



Very rare. Two quite typical specimens at Sts. 385 and WS403, and a good but 

 worn example at St. 384. All the stations are in deep water in the Drake Strait and 

 Scotia Sea, inside the Antarctic convergence line. 



Sidebottom's species is quite distinctive in its markings. It was based on a single 

 specimen from 1425 fathoms in the south-west Pacific (28° 43' S, 154° 11' E). As his 

 specific name semicostata was preoccupied by Seguenza for a form of L. semistriata 

 {Phialina semicostata, Seguenza, 1862, FMMM, p. 45, pi. i, fig. 19), I have renamed the 

 species after A. J. Clowes, M.Sc, A.R.C.S., of the Discovery staff. 



DX >9 



