RHIZOPODA. Prot, 21 
this Order are given, unaccompanied by oven the slightest diagnosis, and 
with a reference to SB. Ges. Jena, 1879, where also no diagnosis is given 
of the new forms. (See Zool. Rec. xvi. Prot. p. 8.) The new genera still 
remain uncharacterized, and are therefore not mentioned here.] 
Order VI. SYMBELARIA. 
Fam. CoLLOSPH.(ERiDA : Acrosphmra, Tribonosphcera (p. 471), Clathro- 
sphcera, Xanthiosphcera (p. 472). 
Order VII. SYNCOLLARIA. 
Fams. Sph^rozoida and Collozoida (none new). 
Aulosphcera pourtalesi, Duncan, J. R. Micr. Soc. (2) i. p. 174, pi. hi. 
figs. 1-3, Caribbean Sea, 280 fath., in calix of Lophohelia. 
Ccelothamnus davidojffi, Biitschli, (21) p. 486, pi. xxxi. figs. 1-5, Ville- 
franche Bay. Diameter 1| centim. 
Zygocircus, Biitschli, (21) p. 496. Name proposed for the bilaterally 
symmetrical species of Lithocircus. 
JSphccrozoum neapoUtanum, Brandt, (19) p. 390, figs. 14-18, Gulf of 
Naples. The colonies exceed in size all other Radiolaria except Collo- 
zoum inerme. It is doubtful whether the constrictions exhibited by the 
vacuoles ever lead to fission of the colony. The individuals which pro- 
duce the two kinds of spores — crystalline and non-crystalline — are 
simply two different stages of development of the same species ; the 
same is the case with SphoRrozoum punctatum, and there appears reason 
to believe in a similar plurality of methods of development, or alternation 
of generations, in all species of the Sphcerozoidce. 
Foraminifera. 
BilocuUna comata, Brady, (16) p. 45. 
Miliolina insignis, cultrata, transverse-striataj separans, rupertiana^ 
parkeri, incrassata, id. (16) pp. 45 & 46. 
Hauerina borealis, North Atlantic, circinata, id. (16) pp. 46 & 47. 
Orbitolites laciniatus, id. (16) p. 47, Friendly Islands and Fiji. 
Astrorrhiza crassatina, angulosa, id. (16) pp. 47 & 48. 
Rhabdammina discreta, id. (16) p. 48. 
Botcllina labyrinthica, id. (16) p. 48. 
Rheophax ampullacea, bacillaris, rudis, dentaliniformis, guttifera, distans, 
id. (16) pp. 49 & 50. R. arctica^ id. (17) p. 405, pi. xxi. fig. 2, West of 
Novaya Zemlya. 
Discorbina wrighti, id. (17) p. 413, pi. xxi. fig. 6, = D. parisiensis, 
Wright, pt.. West of Novaya Zemlya, and N.E. coast of Ireland, and 
deeper water, N. Atlantic. 
Ilolophragmium foliaceum^ rotulatum, scitulum^ turbinatum, nanum, id. 
(16) p. 50. 
Placopsilina bulla, id. (16) p. 51. 
Ammodiscus tenuis, spectabilis, id. ibid. 
Hormosina carpenteri, monile, normani, id. (16) pp. 51 & 52. 
Trochammina galeata,nitida, id. (16) p. 52. 
Cyclammina orbicularis, pusilla, id. (16) p. 53. 
