350 
ME. W. K. PAEKEE AND PEOEESSOE T. E. JONES ON SOME 
shire and Cambridgeshire, and in the Grignon sands (Eocene) ; it occurs also in the 
Vienna Tertiaries, and (according to Reuss, Monogr. Lagen. p. 322) in the Crag of Ant- 
werp, the Septarium-clay of Pietzpuhl, and the Tertiary beds of Taranto (Costa). It is 
rare in the English Crag. 
Plate XVI. fig. 9 a (North Atlantic). 
This figure represents a specimen of L. Icevis from the North Atlantic, where this 
variety is very rare and of middling size at 329 fathoms, lat. 49° 26', long. 49® 48', and 
rare and large at 223 fathoms, lat. 52° 11', long. 13° 45'. 
Lagena sulcata , Walker and Jacob, Var. semistriata , Williamson. Plate XIII. fig. 23 
(Arctic). 
This beautiful little Lagena connects the smooth with the striated varieties. Like the 
others, it varies much in shape and in the strength of its riblets ; the specimen figured 
by Professor Williamson (pi. 1. fig. 9) is much more decanter-shaped than ours, and has 
a very long neck, with a neatly turned rim or lip ; our specimen is deficient as to this 
latter character. We quite agree with Professor Reuss in grouping Williamson’s 
L. vulgaris, var. perlucida (Monogr. p. 5, pi. 1. figs. 7, 8), with this variety. Montagu’s 
L. perlucida is a six-ribbed L. sulcata. We found this specimen (fig. 23) in the shelly 
sand from the Hunde Islands, Davis Straits, 50 to 70 fathoms. Dr. Wallich figures 
L. semistriata in ‘The North -Atlantic Sea-bed,’ pi. 5. fig. 17. 
It is very common to meet with Lagence, both recent and fossil, taking on striae and 
riblets to greater or less extent, as in this instance. Reuss figures finely striated speci- 
mens from the Crag of Antwerp in his paper on the Laqenidce, Sitzungsb. Wien Akad. 
vol. xlvi. pi. 2. figs. 18-21. 
Lagena sulcata. Walker and Jacob, Var. striatopunctata, nov. Plate XIII. figs. 25-27 
(Arctic). 
We have long known this variety from the Indian Ocean on Clam shell, and at 
2200 fathoms, the Red Sea (372 fathoms), South Atlantic (2700 fathoms), and from 
the Eocene deposits of Grignon, but it has not been hitherto figured nor described. 
It is a relatively small Lagena, and is one of the most delicate. It varies in shape, 
from forms more delicately elongate than the tear-shaped specimen represented by 
fig. 25, to those having the usual flask-shape, with longer neck than in fig. 27. The 
ribs are comparatively strong ; they range in number from four to twelve, and in one 
recent specimen we have seen them spiral. The thickened base of the ribs is neatly 
perforated on each side by pseudopodian foramina, which also occasionally pass through 
the rib itself, from within outwards. 
L. striatopunctata occurs rather common at the Hunde Islands, 30 to 40 fathoms, 
in shelly sandy mud, and here attains a size greater than those in the Indian Ocean, or 
those from the inside of a Grignon shell (p. 419, note); the specimens from the Red 
Sea, however, are as large as those from Davis Straits. 
