154 DISCOVERY REPORTS 



secondary aperture. This basal depression and the solid conical neck may indicate 

 affinities with L. stelligera. It was stated in the Falklands report that d'Orbigny's 

 species had been overlooked by subsequent authors. An exception has since come under 

 my notice. Galloway and Wissler [ut supra) record it as rare in the Pleistocene of 

 Lomita Quarry, and very rare in the Pliocene of Timms Point, both in California. Their 

 figure is unmistakable. 



355. Lagena laevis (Montagu) (F 179) (SG 224). 

 Eight stations: 175, 384-6; WS 383, 403, 468, 482. 



The species has a wide range in depth between 100 m. at St. WS 482 and 4773 m. at 

 St. 386. It is never very common, and in the case of dead shells not easily distinguishable 

 from L. hispidula. Every variety of shape is found, sometimes (as at St. 385) at one 

 station. The typical glassy oval form with long neck was found here and at St. 384. The 

 length of the neck is variable, often exceeding that of the flask, but at St. 175 the neck is 

 short and thick, and at St. WS 482 it is practically absent. A very striking variety occurs 

 at Sts. 384, 385, 386 and WS 403, with massive almost globular body surmounted by a 

 broad short neck with reverted lip, the neck being more or less corrugated. It agrees 

 fairly well with Sidebottom's figure (S. 1912, etc., LSP, 1913, pi. xv, fig. 9), but is 

 usually thick-shelled and dull white in colour. A similar but hyaline example at St. 386 

 confirms the assignation of the other specimens to L. laevis. 



356. Lagena lagenoides (Williamson) (F 226) (SG 225). 

 Three stations: 387; WS 468, 482. 



Extremely rare. The single specimens at Sts. 387 and WS 482 are very near William- 

 son's figure, that from St. WS 482 being trigonal in the proximity of the neck. 



357. Lagena lagenoides var. debilis, var.n. (Plate VII, fig. i). 



Lagena lagenoides, Sidebottom, 1912, etc., LSP, 1912, p. 413, pi. xviii, fig. 29; 1913, p. 190. 

 Lagena lagenoides (pars), Cushman, 1932, etc., TPA, 1933, p. 24, pi. vi, figs. 3 a, 6 (only). 



One station : WS 482. 



Among the many varieties of L. lagenoides figured by Sidebottom from the south- 

 west Pacific is one in which the marginal carina is reduced to a mere band, visible only 

 in edge view. In his figure the tubules of the carina show only as a dotted line in the 

 margin of the side view. Describing his figure he says, "the band at the edge is practically 

 flush with the body of the test". 



There is little doubt that Sidebottom's specimens are a degenerate variety of L. 

 lagenoides, but they are sufficiently distinctive for a varietal name. 



A single specimen from 100 m. at St. WS 482 in the Bransfield Strait is unques- 

 tionably identical with Sidebottom's variety, but even more pauperate. It is a trigonal 

 form, and the marginal carina is reduced to a mere ghostlike band in which the tubuli 

 are represented by white spots. It is thin- walled and glassy with a long unattached 

 entosolenian tube, and what is apparently a secondary aperture at the obtusely pointed 

 base. 



Length 0-42 mm.; breadth across each of the three faces 0-20 mm. 



