358 
ME. W. K. PAEKEE AND PEOFESSOE T. E. JONES ON SOME 
Lagena sulcata , Walker and Jacob, Var. ( JEntosolenia ) apiculata, Reuss, et caudata , 
D’Orbigny. Plate XIII. figs. 38, 39 (Arctic) ; Plate XVI. figs. 6, 7, 8, 9 (North 
Atlantic). 
The distomatous condition of Lagena also obtains in the globular forms (included in 
the Oolince of D’Orbigny), which frequently have the neck-tube lengthened inwards and 
free (the characteristic of JEntosolenia, Ehrenberg), see figs. 38 & 39. Among these the 
base of the shell is frequently drawn out or apiculate (as in fig. 39, and in the figures of 
L. apiculata, Reuss, above mentioned), and sometimes perforate, as it is in fig. 38. 
This also holds good in the compressed varieties ( L . marginata). Also among the flask- 
like Lagence we have apiculate forms, as in Oolina (Amphorina) caudata , D’Orb., whether 
striated, as that is, or smooth ; such also are L. apiculata , Reuss, L. globosa , var. lineata , 
Williamson (Monogr. pi. 1. fig. 17), L. strumosa, Reuss, L. mucronata, Reuss, &c. Any 
of these may be perforate. See also Plate XVI. figs. 6, 7, 8, 9. 
Excepting, then, that the globular and lenticular Lagence are frequently Entosolenian, 
none of these characters, whether of elongation, apiculation, and perforation, or of being 
smooth, striated, sulcated, honeycombed, or reticulate (as we shall see with the orna- 
mented forms), are confined to one or another set of Lagence. No specific distinctions 
can be based on any of these features ; but, for convenience sake (as among other spe- 
cies of Foraminifera), several subspecies and varieties take binomial appellations. To 
avoid, however, too great an accumulation of such names we must adopt the published 
names whenever it is possible ; and in this case D’Orbigny’s Oolina caudata will serve 
as a point around which the apiculate and distomatous Lagence , of the flask-shaped and 
more or less globular varieties, may be conveniently grouped. The large sub cylindrical 
and fusiform specimens, like a little rolling-pin in shape, well represented by fig. 20, 
will stand as a distinct variety. 
Fig. 38 (Plate XIII.) differs from L. globosa (fig. 37) in being more elongate or olive- 
shaped, and in having a subsidiary tubular aperture at its base. Fig. 39 has also the 
fundus drawn out or apiculate, but not pervious. A large number of these apiculated 
forms, varying much in outline and in ornament, sometimes distomatous (as fig. 38), 
are not at all uncommon, and may be grouped under the name “ caudata ” given by 
D’Orbigny to one of his Oolince. Sometimes they are Entosolenian (as is seen in 
fig. 39 a), and often they are Ectosolenian, as in D’Orbigny’s 0. caudata , Foram. de 
l’Amer. Merid. pi. 5. fig. 6, a striated form. Compare also the smooth, amphora- 
shaped, distomatous Lagena , fig. 21, above described. 
From 30 to- 40 fathoms at the Hunde Islands (Dr. P. C. Sutherland) ; not common, 
small. World- wide. Fossil in the Tertiary formations. 
Plate XVI. figs. 6, 7, 8, 9 (North Atlantic). 
Allied closely to fig. 21 of Plate XIII., but more swollen ; fig. 8 being more lanceolate 
in outline, and fig. 9 more flask-like, than fig. 21 ; whilst figs. 6 & 7 are striated also. 
These are rare and small at abyssal depths in the North Atlantic. 
A very interesting group of ten Lagence from the Falkland Isles was figured and 
