REPORT ON THE FORAMINIFERA. 
455 
This is an elongate arched variety, occasionally met with in company with Lagena 
globosa and Lagena Icevis, though by no means common. 
The figured specimen was dredged in shallow water off the Cape de Verde Islands ; 
others occur in material from mid-ocean in the South Atlantic, 2350 fathoms, and from 
Station 302, south of Juan Fernandez, 1450 fathoms. 
Lagena Icevis, Montagu, sp. (PL LVI. figs. 7-14, 30). 
“Serpula (Lagena) laevis ovalis,” Walker and Boys, 1784, Test. Min., p. 3, pi. i. fig. 9. 
“Testae oviformes, glandiformes, fusiformes,” &c., Soldani, 1798, Testaceograpbia, vol. ii. 
pp. 16, 17, pi. iii. fig. ee. II. rr. ; pi. iv. fig. ss. 
Vermiculum Iceve, Montagu, 1803, Test. Brit., p. 524. 
Lageuida Icevis, Fleming, 1828, Brit. Anim., p. 235. 
Lagena Icevis, Williamson, 1848, Ann. and Mag. Nat. Hist., ser. 2, vol. i. p. 12, pi. i. figs. 1, 2. 
Miliola Icevis, Ebrenberg, 1854, Mikrogeologie, pi. xxvi. fig. 2 ; pi. xxxi. fig. 5. 
Ovulina clava, Id. Ibid. pi. xxxii. II. fig. 2, b. 
Phialina pyriformis, Costa, 1856, Atti dell’ Accad. Pont., vol. vii. p. 123, pi. xi. figs. 6, 10. 
Lagena vulgaris, Williamson, 1858, Rec. For. Gt. Br., p. 4, pi. i. figs. 5, 5a. 
Phialina propingua, Seguenza, 1862, Foram. Monotal. Mess., p. 43, pi. i. fig. 13. 
ovata, 
Id. 
Ibid. 
p. 44, pi. i. fig. 14. 
longirostris, 
Id. 
Ibid. 
p. 44, pi. i. fig. 15. 
affinis, 
Id. 
Ibid. 
p. 44, pi. i. fig. 16. 
clavata, 
Id. 
Ibid. 
p. 45, pi. i. fig. 17. 
Lagena vulgaris, Reuss, 1862, Sitzungsb. d. k. Ak. Wiss. Wien, vol. xlvi. p. 321, pi. i. fig. 15 ; 
pi. ii. figs. 16, 17. 
,, sulcata, var. Icevis, Parker and Jones, 1865, Pbil. Trans., vol. civ. p. 349, pi. xiii. fig. 22 ; 
pi. xvi. fig. 9a. 
,, Icevis, Jones, Parker, and Brady, 1866, Monogr. Foram. Crag, p. 33, pi. i. fig. 28. 
„ helvetica, Kidder, 1870, Foram. scbweiz. Jura, pp. 24, 33, pi. iii. fig. 1 ; pi. iv. I. fig. 1. 
,, badenensis, Id. Ibid. p. 38, pi. iv. YI. fig. 1. 
„ Icevis, Blake, 1876, Yorkshire Lias, p. 453, pi. xviii. figs. 7, 7a. 
Lagena Icevis represents almost the simplest type of hyaline Foraminifera. The test 
consists of a globular, oval, pyriform, or subfusiform chamber, with a produced tubular 
neck. In the typical condition it is quite smooth externally, and its range of morpho- 
logical variation is confined to mere differences of outline. Specimens from very deep 
water are often opaque, and sometimes have a slightly roughened surface. 
It is perhaps the commonest and most widely distributed of all the Lagence, and 
may be found living in every sea, from the Arctic Ocean, within about ten degrees of 
the North Pole, to the Antarctic Ice-barrier, lat. 64° 18' S. ; and at every depth, from 
the shore-pools of the coast-line down to 2435 fathoms. 
It makes its earliest appearance during the Upper Silurian age, — in the Wenlock Lime- 
stone shales of Sedgley, and in similar rocks at Lincoln Hill, Woolhope (Smith). Its pre- 
sence in the Carboniferous rocks is doubtful ; but it has been found in the Lower Lias of 
