156 '-TERRA NOVA" EXPEDITION. 



Contiiied to the X.Z. area. Frequent and typical, the best at Station G. 

 ■J'he marginal keel is very often thick. At Station 8, in addition to the type, a 

 variety occurs in which the central area is raised abruptly so that the marginal 

 edge projects as a sharp flange round an ol)long box. It is very near the form 

 recorded by Millett from the :\Ialay Archipelago (FM. 1001, pi. viii, fig. 18). At 

 Station (i the very long parallel-sided type figured by Sidebottom (S. 1910. EFBP. 

 ]). IS. ])!. ii, fig. 8), from Palermo was found. 



33(i. Lagena forficula, Heron- Allen and Earland. 



Lagena forjicula, Heron-Allen and Earland. 1913, CI.' p. 87, pi. vi, fig. 11. 



Station 36. 



Two specimens from this Station. The remarkable depth (2.216 fms.) con- 

 trasts strongly with the shallow water British record. 



337. Lagena sdilichti (Silvestri). 



Fismrma carinata (pare), Reu,s.s. 1870, FSP. p. 469. (See Schlicht. 1870, F8P. pi. v, fig,s. 1-3.) 

 Fissurina schlichti Silvestri. 1902. LMT. ]). 143. Text-figs. 9-11. 

 Lar,e»a .. Chapman, 1909, SNZ. p. 337, pi. xv, figs. 7, a, h. 



Stations 6. 9, 10. 12, 16-18, 20. 



Typical and often abundant in the N.Z. and deep-water areas, especially at 

 Stations 6, 10, 12 and 17. 



338. Lagena marginata (Walker and Boys). PL V, fig. 23. 



Serpula {Lagena) marginata. Walker and Boys, 1784, TMR. p. 2. pi. i. fig. 7. 

 Lagena margivntn. Heron-Allen and Earland, 1914, etc., FKA. 191-5, p. 663. 



Stations 2. 3. 5, 6, 7. 10-12, 17-19, 22, 23, 26, 27, 31, 36, 38, 4.5, 48, 

 53, 55 {+ K.I., D.). 



Universally distributed. In the N.Z. area most abundant at Station 6, where 

 every variation in the rotiuidity of the test and the breadth of the keel occurs. 

 In the deep-water area, best at Station 17, characterized by botli Inoad and 

 medium keels, but very good at all the deep-water Stations. In the Antarctic, 

 best at Station 27, where the specimens are abundant and varied, including 

 large individuals, without keel ; these are also noted from Kerguelen Island in our 

 Appendix B. Trigonal and quadrigoiial specimens at Station 27. At Station 31 

 very good specimens, but many showing clearly parasitic borings. At Station 36 

 one broken specimen of enormous size ; at Station 38 the specimens are all very 

 large with narrow keels. In the circum-polar Stations all the individuals are 

 comparatively small but typical. 



At Station 36 a specimen -12 mm. long is recorded (pi. v, fig. 23) exhibiting 

 a l)road keel brok'en up into a serrate edge extending over the basal half of the 



