348 
ME. W. K. PAEKEE AND PEOEESSOE T. E. JONES ON SOME 
Scheme of the Lagex^e. 
/-egg-shaped 
smooth j flask-shaped 
Lamphora-shaped . 
f partly . . 
delicately 
strongly . 
ribbed 
Single- , 
mouthed ' 
coarsely 
square meshes 
reticulate 6 - sided meshcs 
I both 4- and \ 
Lfl-sided meshes J 
rough- 
(_ ened 
J spines . . 
1 granules 
f smooth . . 
compressed 
striate 
r 
reticulate 
l_3-keeled 
f short . . 
Passing 
from 
appendi- 
culate or <( 
caudate 
to disto- 
matous 
smooth 
lorn 
L 
h 
(■ short, 
ribbed { i ong . 
f short, 
granulate j , _ 
globosa, Montagu; Williamson, Monogr. p. 8, pi. 1. figs. 15, 16. 
. I avis, Montagu ; Williamson (A. vulgaris), Monogr. p. 3, pi. 1. fig. 5. 
clavata, D’Orb. Eor. Poss. Yien. p. 21, pi. 1. figs. 2, 3. 
semistriata, Williamson, Monogr. p. 6, pi. 1. figs. 7, 9. 
striata, D’Orb. Eor. Amer. Mer. p. 21, pi. 5. fig. 12. 
sulcata, Walker and Jacob ; Williamson (A. vulgaris, var. striata), Mo- 
nogr. p. 6, pi. 1. fig. 10. [The typical Lagena.'] 
acuticosta, Eeuss, Sitz. Ak. Wiss. Wien, vol. xliv. p. 303, pi. 1. fig. 4. 
Melo, D’Orh. For. Amer. Mer. p. 20, pi. 5. fig. 9. 
Tiexagona, Williamson, Monogr. p. 13, pi. 1. fig. 32. 
squamosa, Montagu; Williamson, Monogr. p. 29, pi. 1. fig. 29. 
Tiispida, Eeuss, Sitz. Ak.Wiss.Wien, vol. xlv. p. 335, pi. 6. figs. 77-79. 
aspera, Eeuss, Sitz. Ak. Wiss. Wien, vol. xliv. p. 305, pi. 1. fig. 5. 
marginata, Montagu ; Williamson, Monogr. p. 10, pi. 1. figs. 19-21. 
racliato-marginata, Parker and Jones (var. nov.), Plate XVIII. fig. 3. 
squamoso-marginata, Parker and Jones(var. nov.), Plate XVIII. fig. 2, 
trigono-marginata, Parker and Jones (var. nov.), Plate XVIII. fig. 1. 
apiculata, Eeuss, Haid. ges. nat. Abhandl. vol. iv. p. 22, pi. 1. fig. 1 ; 
and Sitz. Ak. Wiss. Wien, vol. xlvi. p. 318, pi. 1. figs. 4-8, 10, 11. 
distoma-polita, Parker and Jones (var. nov.), Ann. Xat. Hist. 2 ser. 
vol. xix. p. 279, pi. 11. fig. 23, Plate XVIII. fig. 8. 
caudata, D’Orb. Eor. Amer. Med. p. 19, pi. 5. fig. 6. 
distoma, Parker and Jones (var. nov.), Ann. Xat. Hist. ib. fig. 24. 
distoma-aculeata, Parker and Jones (var. nov.), Plate XVIII. fig. 5. 
distoma-margaritifera, Parker and Jones (var. nov.), Plate XVIII. fig. 6. 
The family Lagenida (comprising Lagena , Nodosarina , Orthocerina, Polymorfhina , and 
Tlvigerina) may be said to have its central home (bathymetrically speaking) at about 
from 50 to 100 fathoms. Of these, Polymorphina is almost exceptional, however; for it 
is, of this group, the most inclined to seek and flourish in shallow water, always avoiding 
abyssal depths. Tlvigerina and Lagena are more capable even than Nodosarina of 
living in deeper water than 100 fathoms, and of existing even at very great depths (2000 
fathoms). Tlvigerina has its feeblest representatives in shallow water; but Lagena 
attains as fair a size in shallow water as it does at 100 fathoms ; and at 1000 fathoms 
it is often in good condition. Nodosarince are, as to their habitat, intermediate between 
Polymorjphince and the others. They are of large size at 100 fathoms ; and are found 
occasionally, but small a,nd rare, at 1000 fathoms; and in shallow water they are more 
abundant than in the abyssal depths, and attain a larger size. 
Lagena sulcata , Walker and Jacob, Var. ( Entosolenia ) globosa, Montagu. Plate XIII. 
figs. 37 a, 37 b (Arctic) ; Plate XVI. figs. 10 a, 10 b (North Atlantic). 
This is the simplest of the Lagence , subspherical and Entosolenian, that is, having an 
intus-suscepted mouth-tube. It is entirely devoid of ornament, and generally thin- 
