THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[FOURTH SERIES.] 

 No. 29. MAY 1870. 



XXXIII. — On two new Species of the Foraminiferous Genua 

 Squamulina; and on a new Species of D'lfWng'ia. By H.J. 

 Carter, F.R.S. &c. 



[Plates IV. & v.] 



The genus Squamulina, according to Dr. Carpenter, was in- 

 stituted by Prof. Scliultze (Ueber den Organismus der Polytha- 

 lamien, &c., 1854) for " a minute Monothalamion of which he 

 found several specimens at Ancona, adhering to the surface of 

 Algaj and to the sides of a ghxss vessel in which sea-water 

 had been long kept. The shell, whose largest diameter is 

 about l-3()0th of an inch, has the form of an irregular plano- 

 convex lens, being usually flat, or nearly so, on its attached 

 side (which accommodates itself to the surface whereon it 

 grows) and convex on its free side, on some part of which, 

 usually about halfway between the centre and the periphery, 

 is a wide orifice from Avhich the pseudopodia issue. The shell 

 is calcareous and opaque, and is destitute of pores ; its adhe- 

 rent layer is very thin, and is with difficulty detached from 

 the sm-face to which it is attached. The substance of the ani- 

 mal is of a brownish -yellow colour, as in Gromia ; its pseudo- 

 podia, however, seem fewer and less disposed to subdivide 

 and inosculate." (Carpenter, ' Introduction to the Study of 

 the Foraminifera,' Ray Soc. Pub., p. 67, pi. 1. fig. 22; also 

 Pritchard, ' Infusoria,' p. 5.58, ed. 1861.) 



Two arenaceous forms of this genus live in the laminarian 

 zone at Budleigh-Salterton, as their presence on certain fuci 

 cast upon the beach during storms indicates : — one like Squa- 

 mulina Ifevis, the type species of Schultze's genus just de- 

 scribed ; the other, also discoidal, but bearing a little, erect, 

 brush-like eminence on its convexity. 



For the former I w^ould suggest the specific name varians, 

 and for the latter scopiila, from the resemblance of the emi- 

 nence to a little brush or broom. 



Ann. i!c Mag. N. Hist. Ser. 4. Voir. 22 



