LAGENIDA. 33 
fact, corresponding to the occurrence of equally large individuals of this variety at very 
great depths (1080 fathoms) in the tropical Atlantic (lat. 2° 20’ N., long. 28° 44’ W.). 
Professor Reuss has it fossil from the Chalk of Maestricht and of Lemberg, from the 
Oligocene Septarium-clay of Pietzpuhl, the Salt-clay of Wieliczka, and the Crag of 
Antwerp (‘ Monogr. Lagen., p. 318) ; and in other Tertiary deposits it is not uncommon. 
The Crag specimens are generally above the average size; and the number of examples 
in the Cardita senilis bed and the bed with Cyprina Islandica is considerable. 
2. Lacuna tavis, Montagu. Plate I, fig. 28. 
Serpula (Lagena) levis ovalis, Walker and Jacob, 1784. Test. Minut., p. 3, pl. 1, 
fig. 9. 
VERMICULUM Lave, Montagu, 1803. ‘Test. Brit., p. 524. 
SerpuLa La&vis, Maton and Rackett, 1807. Trans. Linn. Soce., vol. viii, p. 247. 
== — Turton, 1819. Conch. Dict., p. 157. 
LacenuLa — Fleming, 1828. Brit. Anim., p. 235. 
— —  Macgillivray, 1843. Moll. Anim. Aberd., p. 38. 
— — Thorpe, 1844. Brit. Mar. Conch., p. 234. 
Lacuna — Williamson, 1848. Ann. Nat. Hist., 2nd ser., vol. i, p. 12, pl. 1, figs. 1, 2. 
CuNCHRIDIUM DAcTYLUM, Ehrenbd., 1854. Mikrogeologie, part 2, p. 22, pl. 24, 
figs. 1, 2. 
MILIOLA LAVIS, Id. Ib., p. 23, pl. 32, fig. 2 @ (not pl. 26, fig. 2). 
OVULINA CLAVA, Td. Ib., fig. 2 6. 
PHIALINA OVIFORMIS, Costa, 1854—1856. Paleont. Napoli, pl. 11, fig. 9. 
AMYGDALINA CALABRA, Id. Ib., p. 124; figs. 6, 8. 
Lacuna L&vIS, Parker and Jones, 1857. Ann, Nat. Hist., 2nd ser., vol. xix, p. 279, 
pl. 11, figs. 22—24. 
—  vuLe@aRIs, Will., 1858. Ree. For. Br., p. 4, pl. 1, figs. 5, 5 a. 
MixioLa sTYLIGERA, Ehrend., 1858. Mikrogeologie, part 2, p. 23, pl. 31, fig. 6. 
LAGENA SIPHONIFERA, Reuss, 1858. Zeitschr. Deutsch. Geol. Ges., vol. x, p. 433. 
—  sULCATA, var. LAVIS, P. and J., 1859. Ann. N. Hist., 3rd ser., vol. iv, p. 341, &c. 
— vuLeGarts Reuss, 1862. Sitz. Akad. Wiss., vol. xlvi, p. 321, pl. 1, fig. 15; 
pl. 2, figs. 16, 17. 
PHIALINA PROPINQUA, Seguenza, 1862. For. Mon. Mioc. Messin., p. 43, pl. 1, fig. 13. 
— OVATA, Id. Ib., p. 44, pl. 1, fig. 14. 
-- LONGIROSTRIS, Id. Ib., p. 44, pl. 1, fig. 15. 
— AFFINIS, Id. Ib., p. 44, pl. 1, fig. 16. 
— CLAVATA, Id. Ib., p. 49, pl. Litigula. 
Lacena Lavis, Brady, 1864. Trans. Linn. Soc., vol. xxiv, p. 472. 
—  svuLcata, var. Lavis, P. and J., 1865. Phil. Trans., vol. elv, p. 349, pl. 13, 
fig. 22; and pl. xvi, fig. 9 a. 
Characters.—Shell flask-shaped, with elongated neck; smooth and destitute of orna- 
ment. Neck frequently thickened at the mouth, so as to form a sort of hp. Colour 
white; very transparent. Length ith to xth. 
