394 
MB, W. K. PARKER AND PROFESSOR T. R. JONES ON SOME 
Pulvinulina repanda , Fichtel and Moll, sp., Yar. punctulata , D’Orbigny,*sp. Plate XIY. 
figs. 12, 13 (Arctic). 
Though flatter, this is essentially the same as Pulvinulina punctulata, D’Orb., sp., 
Modele, No. 12. When smaller, more limbate, and less compact in growth, it passes 
into more ordinary varieties, such as P. repanda , Fichtel and Moll, sp. (Rotalina conca- 
merata, Williamson, Monogr. pi. 4. figs. 101-103). 
In our former description of the Norwegian Foraminifera, we mistook this large variety 
for a large growth of Biscorbina vesicular is, Lam., sp. It is represented, in Messrs. 
Mac Andrew and Barrett’s dredgings, by one specimen from sand at West Fiord 
(Nordland) from 60 fathoms depth, and eight specimens that occurred on sponge from 
100 fathoms at Yigten Island, Inner Passage (Drontheim). 
It lives also in the Adriatic (D’Orbigny) and at Orotava (Canaries) ; and is abundant 
and large off Sicily, and in the Levant, and in many other parts of the world at mode- 
rate depths. The huge specimens from the Crag, larger than our Norwegian specimens, 
lean more to the looser and few-celled type figured by Williamson. 
Pulvinulina repanda , Fichtel and Moll., Var. Menardii , D’Orbigny, sp. Plate XVI. 
figs. 35-37 (North Atlantic). 
Pulvinulina Menardii , D’Orb., Modeles, No. 10, is a deep-sea form of P. repanda ; it 
is in best condition at from 100-500 fathoms, but lives well at even three miles depth ; 
in shallow water (algal belt) it becomes either conus-shaped, or much depressed with a 
large keel (P. pauperata, Parker and Jones, Plate XVI. figs. 50, 51); whilst P. repanda 
(the type) becomes vermiculate, abounding in the Mediterranean as Pulvinulina vermi- 
culata , D’Orb., sp. ( Planorbulina vermiculata, D’Orb., Ann. Sc. vii. p. 280, No. 3; after 
Soldani). At from about 30-100 fathoms in the Mediterranean the typical P. repanda 
abounds ; and in the same sea the obtusely conical P. Micheliniana represents the species 
abundantly at from 500—1500 fathoms on muddy tracts, whilst the flatter form (P. Me- 
nardii) common in the depths of the great oceans seems to be wanting there. P. Miche- 
liniana is also potent in the Arctic seas and North Atlantic; and is fossil in great 
numbers in the Chalk. 
P. Menardii is generally limbate and granulo-aciculate ; the specimens before us are 
more or less limbate and have roughish shells. They are not numerous, nor have they 
attained the fulness of size and beauty that belong to the species in lower latitudes ; the 
further north, the poorer they are ; for those in the Mid-Atlantic (Dayman) are generally 
somewhat larger than those in the North Atlantic (Wallich’s Collection) ; and this is the 
case with other species and varieties. In the Atlantic the proportion of Pulvinulince to 
the Foraminiferal fauna is perhaps not ygfh of what will be found in the deep water of 
tropical and subtropical seas. 
In the North Atlantic Pulvinulina Menardii is widely distributed. On the marginal 
plateau off Ireland it is rare and small in the shallow, less rare and larger in the deeper 
part. It is of middle size and common in the “Celtic” portion, and rather rare 
