LAGENIDA. 35 
of neck and general contour of the shell, would have to be chiefly considered ; and these, 
as we well know, are extremely variable. D’Orbigny’s figure of LZ. striatocollis represents 
a poorly defined specimen of this subtype. 
It is very common to meet with Lagene, both recent and fossil, taking on striz and 
riblets to greater or less extent, as in this instance. Reuss figures finely striated spe- 
cimens from the Crag of Antwerp in his paper on the Lagenid@, ‘Sitzungsb. Wien. 
Akad.,’ vol. xlvi, pl. 2, figs. 18—21. Dr. Wallich, in his memoir on the North-Atlantic 
sea-bed, figures LZ. semistriata (pl. 5, fig. 17); and D’Orbigny’s Oolina striaticollis 
(Falkland Isles) belongs to the same variety. It is a common form on our British coast. 
Hgger’s Oolina striatula offers an interesting passage-form (especially his fig. 6) between 
L. semistriata and L. crenata, P. and J. 
Only a single broken specimen has occurred to us in our examination of the Crag 
deposits, and this is from Sutton. 
A, Lacrna srriata, D’Orbigny (not of Montagu and Williamson). Plate I, figs. 
38—40. 
Oona striata, D’Orb., 1839. Foram. Amér. Mérid., p. 21, pl. 5, fig. 12. 
— Harpineerti, Czjzek, 1847. Haiding. Nat. Abhandl., vol. ii, p. 138, pl. 12, 
figs. 1, 2. 
LAGENA SUBSTRIATA, Williamson, 1848. Ann. N. H., 2nd ser., vol. i, p. 15, pl. 2, fig. 12. 
Ovutina sicuLa, Ehrenb’., 1854. Mikrogeologie, part 2, p. 23, pl. 26, fig. 1. 
LaGENA VOLGARIS, var. GRACILIS, Will., 1858. Rec. For. Brit., p. 7, pl. 1, figs. 12, 13. 
— — var. SUBSTRIATA, Id. Ib.,.p- 7, pl. 1, figs 14. 
—  GRaciLicosta, Reuss, 1858. Zeitsch. Deut. Geol. Ges., vol. x, p. 434; 1862, 
Sitz. Akad. Wien., vol. xlvi, p. 327, pl. 3, figs. 42, 43. 
—  sTRiaTA (parte), Id., 1862. Sitz. Akad., vol. xlvi, p. 327, pl. 3, fig. 44 ; 
pl. 4, figs. 46, 47. 
Ovuina stRIATA, Seguenza, 1862. Foram. Monot. Messina, p. 40, pl. 1, figs. 6, 7. 
Puriatina Harpineert, Id. Ib., p. 46, pl. 1, fig. 20. 
—  fTENUIsTRIATA, PH. GeEMELLARII, Po. cytinpRaceka, Jd. Ib., figs. 21, 23, 24. 
LAGENA _ Stachéy 1865. Novara-Exped., Geol. Theil., vol. i, part 2, 
p. 184, pl. 22, fig. 4 (like our fig. 40, Pl. I). 
Characters.—¥lask-shaped Lagene of variable dimensions, ornamented with delicate 
longitudinal and sometimes spiral striz and riblets, come under the denomination of 
L. striata. (See the scheme of Lagene, ‘ Phil. Trans.,’ 1865, vol. clv, p. 384.) Out of 
this, however, as also out of the other groups, we separate the caudate or apiculate forms, 
leading towards the double-mouthed or distomatous, perforate, cylindrical Lagene, with 
which they make another artificial division. 
L. striata accompanies the more common and strongly grown Lagene all over the 
world, and have existed with them in Tertiary times. We have a few specimens from the 
Crag of Sutton and of Sudbourne. 
