RHIZOPODA. 
Frot. 9 
Subfam. v. Cycloclypidai{^x>eidoe\ {Heterostegina, Cyclo- 
clypeus, Orhitoides] subg. Discocyclina^ &c.,of Giimbel ; 
Tinoporus appended). 
GenerAj Species, &c., referred to. 
Radiolaria. 
Euchitoma, Spongocyclia, Spongasteri^cus, referred by Kent, (1) p. 226, 
to new Order, liadio-jflagellata, among the Flagellate Infusoria. 
Dictyocysta cassis^ W. S. Kent, Tr. Birmingham Soc. 1 880, pi. iv. figs. 1 
& 2 . 
Acanthocystis fava, Greef, Atti Soc. Ital. xxii. p. 46, pi. i. The normal 
method of reproduction is by spores, which result from the fission of the 
nucleus. 
Acanthocystis viridis, Korotneff, (5) p. 481, pi. xxxv. figs. 10-16. Ovoid 
bodies with nuclei and contractile vacuoles are developed, as in A. acu- 
leata, beneath the surface skeleton, and issue as flagellated embryos. 
Actinosphoirum eichhorni, Am. Micr. J. i. p. 41, figs. 11 & 12. H. 0. 
Everts figures and describes this Rhizopod. The appearances and 
behaviour of the axes of the pseudopodia are explicable by supposing 
them to consist of a dense form of protoplasm. 
Actinophrys sol, observations on the physiology ; J. Fullagar, Sci. Gos. 
xvi. p. 206, fig. 130. 
Foraminifera. 
Polystomella, (6) p. 103. P. craticulata separated as g. n. (Helicoza), 
and the genus redefined. F. crispa, 1. c. p. 101, pi. xi. figs. 4 <§: 7, pi. xii. 
A var. crassa described from the Adriatic and Mauritius. 
Testamcehiformia. New group of Foraminifera formed by Carter, 
(4), to contain the new genera Holocladina and Cysteodictyina, with the 
characters “ amoebiform, testaceous.” 
Rotalia spiculotesta, (4) p. 452. Abundant in Gulf of Manaar. Some 
young specimens have the test apparently almost entirely composed of 
foreign bodies. 
Amphistegina, D’Orbigny, (4), represented by two or three species in 
the Gulf of Manaar. 
Amphistegina lessoni, D’Orb., (6), p. 99, pi. x. figs. 10-14, pi. xi. figs. 1-3. 
The walls of all chambers after the second from the centre, end laterally 
in finger-like processes which in younger chambers branch or form net- 
works. The chambers are lined by chitin. Near the centre of the 
dorsal and ventral faces there are spaces free from pores ; the ventral 
halves of the septa are also devoid of pores. Tests of Amphistegina form 
the chief part of the calcareous sand of the coral reef off the south-east 
of Mauritius. 
Calcarina calcar, (4) p. 453. A new var., hispida, described by Carter, 
from Gulf of Manaar. 
Calcarina defrancii, D’Orb., (6) p. 104, pi. xiv. — Rotalia, and includes 
C. calcar, D’Orb. Both simple and branched canals distinguishable in 
walls. 
