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ME. W. K. PAEKEE AND PEOFESSOE T. E. JONES ON SOME 
Eotalia affords ns a good example of the parallelism that may be traced between the 
members of one and another Foraminiferal species (just as occurs in other natural 
groups). Thus, contrasted with Polystomella , we have an interesting series of repre- 
sentative forms. 
Parallelism of Eotalia Beccarii and Polystomella crispa. 
Varieties of Eotalia Beccarii. 
Eotalia Schrceteriana, Parlcer and Jones. 
Beccarii, Linn, (large typical form). 
ammoniformis, IP Orb. (flat var. Bimini). 
Beccarii, Linn, (small smooth var.). 
dentata, Parlcer and Jones. 
Soldanii, IP Orb. 
orbicularis, IP Orb. 
(Calcarina) pulchella, IP Orb. 
(Asterigerina) lobata, IP Orb. 
Varieties of Polystomella crispa. 
Polystomella craticulata, Ficlitel and Moll. 
crispa, Linn. 
macella, Ficlitel and Moll. 
striato-punctata, Ficlitel and Moll. 
strigilata (var. /3), Ficlitel and Moll. 
■ (Nonionina) asterizans, Ficlitel and Moll. 
(Nonionina) pompilioides, Ficlitel and Moll. 
unguiculata, Gmel. 
(Nonionina) stelligera, D'Orb. 
The nearness of the two specific groups is also seen in our new Eotalia craticulata 
(Plate XIX. fig. 12) being separable from Polystomella crispa chiefly by its want of 
symmetry ; and, further, E. Schrceteriana passes into E. craticulata by a greater diffe- 
rentiation of the canal-system, which approaches its most perfect condition in the 
higher Polystomella. 
Eotalia Beccarii , Linn., sp. Plate XVI. figs. 29, 30 (North Atlantic). 
Figs. 29 & 30 present a strongly granular condition on the lower surface, and may be 
said to be passing into the smaller varieties that belong to deep water ; indeed, they are 
intermediate between the common E. Beccarii of shallow water and the variety known 
as E. Soldanii , D’Orb. (Modeles, No. 36), that inhabits deep water. With flattened and 
adpressed chambers on the upper side, and without granules on the lower, figs. 29 & 30 
would be E. Soldanii ; such modifications are common. E. Beccarii passes into E. Sol- 
danii in deep seas everywhere; but in hot seas it also passes into the large, conical, 
craticulate form (E. Schrceteriana , Parker and Jones) with pseudopodial passages, as in 
Polystomella. 
Both in its estuarine and its abyssal varieties E. Beccarii is feeble, being delicate in 
shell and small in size. Its smallest and most abyssal variety is E. orbicularis, D’Orb. 
(fig. 34), which is not abundant. In about 100 fathoms E. Soldanii , with a diameter 
three times as great as that of E. orbicularis , is abundant enough, and is of stronger 
make. The shell becomes larger, more vesicular and more granular in the best habitat 
of E. Beccarii (20 to 40 fathoms in warm seas) ; and in shallow waters it is smaller (of 
the size of E. Soldanii ), less strong in its structure, even more vesicular, and extremely 
abundant (even in some brackish waters). 
Eotalia Beccarii from the Lido (Venice) and Eimini, both on the Adriatic, is very 
smooth and complanate (although large and well-developed), compared with specimens 
