54 ProL xviii. protozoa. [1905] 
and Heliozoa from deep-lakes, interesting remarks on, Murray (306) 
& Penard (334). 
Xenophyophora nom. nov. for a remarkable new group, placed by 
Schulze (431) among the Rhizopods and allied with the Foraminifera. 
It includes (so far) the families Psamminidce and Stannomidce of 
Hckl., in a modified sense. Classification, pp. 46-50. (All from 
“Valdivia” Material, Deep-Sea Expedition.) 
Psamminidce, with no “ linellae.” 
Cerelasma, p. 21, C. gyrosphcera , p. 21, pi. 2, figg. 5-11, pi. 3, figg. 1 & 2, 
G. lamellosa , p. 24, pi. 3, fig. 3, described, Schulze (431). 
Holopsamma , p. 25, H. crelaceum , p. 26, pi. 3, figg. 4-6, H. argillaceum, 
p. 27, described, Schulze (431). 
Psammetta n. g, p. 6, P, erythrocytomorpha n. sp., p. 6, pi. 1, pi. 2, 
figg. 1—4, described, Schulze (431). 
Psammina globigerina , p. 18, P. plakina , p. 20, P. nummulina , p. 20, 
described, Schulze (431). 
Psammopemma calcareum, p. 28, P. radiolarium, p. 27, notes on occurrence, 
Schulze (431). 
Stannomidce , with “linellae.” 
Stannarium alatum , p. 45, S. concretum , p. 46, notes on occurrence, 
Schulze (431). 
Stannoma coralloides , p. 35, pi. 4, fig. 4, S. dendroides , p. 32, pi. 4, figg. 
1-3, 5-10, described, Schulze (431). 
Stannophyllum , p. 36, JS, zonarium , p. 37, pi. 5, pi. 6, figg. 1 & 2, S. radio- 
larium, p. 41, pi. 7, fig. 1, S. reticulatum, p. 44, pi. 6, figg. 3-5, S. 
globigerinum, p. 43, pi. 7, figg. 2 & 3, described, Schulze (431). 
(a) Lobosa : — 
Amoeba, existence of a true genus (comprising numerous species), well- 
characterized if somewhat difficult to diagnose, and quite distinct 
from the host of amoeboid organisms collectively included in the term 
“Amoebae,” Penard (336) pp. 401-409; A. angulata Mer., p. 322, 
text-figg. 1-5, A. humilis n. sp., p. 331, text-figg. 9-11, A. penardi 
n. sp., p. 329, text-figg. 6-8, described, Schouteden (417) ; A. blattce, 
pp. 6-23, pi. 1, figg. 1-10, pi. 2, A, proteus, pp. 23-39, pi. l,figg. 11-13, 
general description of, Schubotz (427); A. dofleini n. sp., mode of 
nutrition, etc., and trophic nuclear changes in, described, Nere- 
sheimer (312) pp. 147-165, pi. 7, 13 text-figg. ; A. Umax , structure, 
nuclear division, and biology, described, also artificial cultivation of, 
Vahlkampf (492) pp. 167-220, pi. 6 ; A. salina n. sp., with peculiar 
pseudopods, occurrence and diagnosis, Hamburger (172) pp. 1 26— 
128, pi. 6, figg. 18-22 ; A. terricola, structure and properties of 
membrane, cytoplasm, and manner of locomotion in, pp. 176-195, 
figg. 1-8, A. t., effects on, produced by the attack of Nucleophaga 
amoebcea, p. 195, figg. 9-12, A. t ., p. 199, fig. 13, A. papyracea n. sp., 
p. 201, fig. 14, A. similis , p. 201, fig. 15, A. sphceronucleolus , p. 202, 
fig. 16, A. fibrillosa, p. 202, fig. 17, A. alba , p. 203, fig. 18, A. striata , 
p. 204, fig. 19, and A. vesiculata, p. 204, fig. 20, occurrence and 
diagnostic characters, Penard (335). 
Arcella rota n. sp., p. 9, pi. 1, figg. 1-5, A. marginata n. sp., p. 11, pi. 1, 
figg. 6-8, Paraguay, described, v. Daday (99) ; A. vulgaris , process of 
encystment. degeneration appearances, and formation of secondary 
nuclei in, described, Martini (282) pp. 574-619, pis. 28-30 ; A. v. var. 
compressa n. var., occurrence and diagnosis, Cash & Horkinson (63) 
p. 138, text-fig. 28. 
Centropyxis aculeata var. spinosa n. var., occurrence and description, 
Cash & Hopkinson (63) p. 135, pi. 16, fig. 15, text-fig. 26. 
Cochliopodium crassiusculum n. sp., p. 592, pi. 13, fig. 7, C. longispinum, 
