AA FORAMINIFERA OF THE CRAG. 
traversed by pseudopodial tubes, with a somewhat radial arrangement, often giving the 
margin the appearance sometimes of being more or less regular plicated. 
Length 4th inch. 
In fact, we have in this case one of the subvarieties of Zayena marginata mentioned 
in ‘ Phil. Trans.,’ 1865, p. 335, and alluded to above in our account of the last-named 
form. Among the several modifications of the type, this presents one with the radiating 
canals visible only at the margin. Prof. Williamson’s Hntosolenia marginata, var. ornata, 
especially possesses the subtypical character above mentioned; and his 2. marginata, 
var. /agenoides, as represented by the fig. 26 in his ‘ Monograph’ (badly copied in Prof. 
Reuss’s ‘Monograph of the Lagenida, 1862, pl. 2, fig. 27, and misnamed “ appendi- 
culata’ in the plate), has this character plain enough, though not so symmetrically perfect 
as in our specimen from the Crag. Prof. Seguenza has recorded some beautiful spe- 
cimens; his Misswrina trapezoides is almost identically the same as Williamson’s fig. 26 ; 
but his / radiata and F. Reussiana are beautiful developments of the same form ; 
indeed, we regret that the exigencies of zoological nomenclature debar us from keeping 
our highly esteemed German friend’s name permanently associated with so elegant a Lagena, 
L. ornata, with its neatly radiate margin, does not seem to be a very rare form among 
other Zagene (Davis’ Straits and British coast, recent ; Sicily, fossil); besides two or 
three small specimens, we have from the Crag of Sutton one at least as beautiful as 
Seguenza’s LZ. Reussiana. 
10. LaGena apicunata, Reuss. Plate I, fig. 27. 
Oonina apicuLata, Reuss, 1850. Haiding. Nat. Abhandl., vol. iv, p. 22, pl. 1, fig. 1. 
LAGENA — Id., 1862.  Sitz. Akad. Wien., vol. xlvi, p. 319, pl. 1, figs. 
4—8, 10, 11. 
FissURINA ACUTA, Id. Ib., p. 340, pl. 7, figs. 40, 41. 
OVULINA CAUDIGERA, Seguenza, 1862. Joram. Mon. Mioc. Mess., p. 39, pl. 1, fig. 3. 
—  PERFORATA, id. Ib., p. 40, pl. 1, fig. 4. 
AMPHORINA GLOBOSA, Id. Ib., p: 60, pl. 1, fig. 31. 
— TENUICALCAR, Id. Ib., fig. 32. 
— . ELONGATA, Id. Ib., fig. 34. 
LaGENA SULCATA, var. (ENTOSOLENIA) APICULATA et cAUDATA, P. and J., 1865. Phil. 
Trans., vol. clv, p. 358. 
Characters.—Shell oval, subspherical, or flask-shaped ; smooth, with the base either 
merely apiculate, or drawn out into a tubular prolongation. 
Length ;3,th inch and upwards. 
Similar forms are often ornamented with strize and costule, such as Z. caudata, D’Orb. ; 
and the two groups together, as we have already noticed (p. 35), when referring to our 
scheme of the division of the Zagene, may be referred to under that name, as an intermediate 
