FOSSIL RHIZOPODA. 
Prot. 17 
probably occurring throughout the group. The group consists entirely 
of unicellular organisms. A genetic tree is given. 
Pelagic Foraminifera, (4) p. 292. List of 17 known species ; Glohi- 
gerince from the surface have the long surface spines more often .than those 
from the bottom. Surface specimens are generally smaller and thinner 
than the best developed bottom specimens. Facts tend to show that 
some species actually live at the surface and some at the bottom ; possibly 
some surface Glohigeririfc and Orhulinm may live at the bottom as well. 
The tow-net used behind the trawl brought up many Foraminifera-iQ^is 
containing the sarcode, 1. c. p. 297. 
Character of tubulation in branched Foraminifera, (5) p. 411. 
Pores present in tests of the porcellanic Foraminifera, (4) p. 413. 
H. G. Sorby finds the shells of Foraminifera to consist generally of 
calcite, some probably contain arragonite or phosphate of lime in addition ; 
J. G. Soc. XXXV. pp. 60 & 64. 
On this subject, cf. also Brady, supr^, Hyperammina^ under “ Genera, 
Species, &c., referred to,” and Cyclammina, among “ Now Species.” 
Fossil Rhizopoda. 
9. Moller, V. VON. Die Foraminiferen des Russischen Kohlenkalks. 
M^m. P^tersb. xxvii. No. 5, pis. i.-vii. 
H. A. Nicholson & R. Etheridge, jun., in a Monograph of the 
Silurian Fossils of the Girvan District, in Ayrshire, &c. (Edinburgh and 
London : 1878, fasc. i., 9 pis.), treat of the Rhizopoda and other groups. 
They discuss the affinities of Nidulites, and place it near ReceptaculiteB. 
Jschadites, 1. c. p. 19, has, perhaps, similar affinities. 
Fossil Saecammina. Cf. H. B. Brady, in the preceding work, p-. 21. ' 
Fusulina, Moller, (9) p. 3. Notes on several fossil species from 
America. 
Schwagerina, 1. c. p. 6 ; Cribrospira, p. 11. 
Bradyina, Von Moller, 1. c. p. 9. Diagnosis modified ; a number of 
small openings occur in the end- plate, besides the two semicircles of 
perforations. 
Endothyra, Philipps, 1. c, p. 12. Structure elucidated ; new and other 
species described and figured. 
Fusulinella, 1. c. p. 21. New species described and figured. 
Spirillina, Ehrenberg, 1. c. p. 26. Four new species described and 
figured. 
TetraxiSf Ehrb., 1. c. p. 68, characterized. A new variety from the 
Russian carboniferous limestone. 
Nodosinella, Brady, L c. p. 73. Two spp. nn. from the Russian carbo- 
niferous limestone. 
Archcediscus, Brady, 1. c. p, 76. Variations of shell ofA.carreri, Brady, 
occur according to age. 
Ovulites. E. P. Wright, Q. J. Micr. Sci. xix. p. 442, enumerates the 
latest arguments for the Algal affinity of this organism. 
1879. [voL. XVI.] D 6 
