i6o DISCOVERY REPORTS 



382. Lagena quadrilatera var. striatula, var.n. (Plate VII, fig. 9). 

 One station: 385. 



A single specimen only. The variety differs from the type only in the finely striate 

 surface of the test. The striae extend over the keels as well as the faces of the test. 



383. Lagena quadricostulata, Reuss (F 216). 

 Two stations: WS 468, 469. 



Very rare at both stations. The specimens are not typical, the costae being repre- 

 sented only by flush bands of more opaque shell material than the body of the test. . 



384. Lagena reniformis, Sidebottom (F 208) (Plate VII, figs. 12, 13). 

 Three stations: 175, 195; WS 482. 



Very rare; only single specimens except at St. 175. All the stations are in the Brans- 

 field Strait area. 



385. Lagena revertens, Heron-Allen and Earland (F 238) (SG 240). 

 One station : WS 399. 



Only a single typical specimen. 



386. Lagena schlichti (A. Silvestri) (F 225) (SG 241). 

 Nine stations: 170, 177, 200, 383-6; WS 403, 507B. 



Frequent, typical and large specimens at Sts. 384 and 385, rare or very rare at the 

 remaining stations. 



387. Lagena scottii, Heron-Allen and Earland (Plate VII, figs. 14, 15). 



Lagena scottii, Heron-Allen and Earland, 1922, TN, p. 150, pi. vi, figs. 3, 4. 

 Lagena scottii, Heron-Allen and Earland, 1924, FQM, p. 150, pi. ix, figs. 39-41. 



One station: 175. 



A fev^^ large and typical specimens. They are not in such good condition as the types 

 from Terra Nova St. 340 in the Ross Sea, 160 fathoms, the delicate outer membrane 

 covering the reticulate surface being generally denuded. 



388. Lagena seguenziana, Fornasini (Plate VII, figs. 16-18). 



.'' Fissurina marginata, Seguenza (^/o^^ Walker and Boys), 1862, FMMM, p. 66, pi. ii, figs. 27, 28. 



? Lagena orbignyana, Brady, 1884, PC, pi. lix, fig. i. 



Lagena seguenziana, Fornasini, 1886, LP, p. 352, pi. viii, figs. 1-6. 



Pour stations: 385; WS 205, 403, 468. 



Single specimens at Sts. WS 205 and 468, more frequent at the other stations but 

 always very rare. All the stations are in deep water. 



Fornasini's species is very distinctive, and we have no hesitation in assigning our 

 specimens to it. The shell is round or slightly ovate, central area very inflated, then 

 sinking into a channel inside the rim which is very broad and practically flat. There is a 

 gradual increase in thickness from the oral to the aboral end. The aperture is at the 

 extremity of a short neck tapering into the broad rim. Seen in edge view the highly 

 convex faces of the test project beyond the flat rim. 



Length up to 0-30 mm.; breadth 0-22 mm.; maximum thickness 0-13 mm., the rim 

 being o-i of this measurement. 



