386 DISCOVERY REPORTS 



The occurrence of this species so far from its original, and, as far as we know, its only 

 recorded habitat, is noteworthy. 



Largest specimen (of two chambers) was 0-35 mm. long, and o-i6 mm. at its greatest 

 breadth. The four-chambered specimen was 0-52 mm. long, and o-i6 mm. broad. 



259. Nodosaria lepidula, Schwager (Plate XII, fig. 5). 



Nodosaria lepidula, Schwager, 1866, FKN, p. 210, pi. v, figs. 27-8. 

 Nodosaria {Sagriiia}) lepidula, Schubert, 1911, FFB, p. 75, figs. 5 a-f. 

 Nodosaria lepidula, Cushman, 1921, FP, p. 203, pi. xxxvi, fig. 6. 



One station: WS 90. 



A small specimen 0-28 mm. long, clearly referable to Schwager's species. A^. lepidula 

 appears to be merely a straight form of the earlier dentaline N. adolphina of d'Orbigny. 



Genus Lingulina, d'Orbigny, 1826 



260. Lingulina biloculi, Wright. 



Lingulina carinata var. biloculi, Wright, 1910-11, ECM, p. 13, pi. ii, fig. 10. 

 Lingulina biloculi, Heron-Allen and Earland, 1913, CI, p. 94, pi. viii, figs. 5-7. 



Five stations: 388; WS 71, 83, 88, 92. 



Occasional specimens only. At WS 71 and 83, they are of the sharp-edged L. qiiad- 

 rata type. At 388 and WS 88, of the rounded-edged Lagena malcomsonii type. At 

 WS 92, both forms occur together. 



261. Lingulina quadrata, Heron- Allen and Earland. 



Lingulina quadrata, Heron-Allen and Earland, 1913, CI, p. 95, pi. viii, fig. 11. 

 Lingulina quadrata, Cushman, 1918, etc., FAO, 1923, p. 94, pi. xvii, fig. 12. 



Three stations: 388; WS 93, 408. 



Very rare ; at WS 93 some of the specimens are very narrow and hardly separable 

 from L. biloculi. 



262. Lingulina falcata, sp.n. (Plate XII, figs. 6-8). 

 Four stations: 388; WS 83, 88, 93. ' 



Test hyaline, highly compressed, bilocular. The first chamber nearly circular in plan, 

 furnished with a thickened edge. The second chamber varying in shape from an 

 irregularly quadrate to an almost obtusely rounded chevron. The broad, curving anterior 

 edge is solid and furnished at the outer extremities with a recurved hook, and is 

 perforated with a fissurine aperture, sometimes connecting with a short entosolenian 

 tube. 



Length, about 0-22 mm.; breadth, 0-14 mm. 



Occasional specimens at each station. This is a very distinctive little form. It may 

 perhaps be a linguline and compressed development of Lagena falcata. Chaster {vide ante 

 No. 220), which normally has a broad solid neck very similar in appearance to, though less 

 extensive than, the final chamber of Lingulina falcata. In a single abnormal specimen. 



