12 Prof. 
PEOTOZOA. 
Cysteodictyinaj Carter, (4) p. 448. Differs from Holocladina only in 
being lobate and membraniform, not branched, in the thinness of the 
tost and its freedom from roughnesses, and in the largo size of the pores. 
C. compreasa, id. ibid. pi. xviii. fig. 5. 
Ceratestina, Carter, (4) p. 448. Characterized as having the test horny, 
of dark amber colour and translucent. C. globularis, id. ibid. pi. xix. fig. 6, 
in cavities of Melobesian nodules, Gulf of Manaar ; on Stylaster sanguineus^ 
South Pacific. C. tessellata, id. ibid. p. 450, pi. xix. fig. 7, in cavities of 
Melobesian nodules. Gulf of Manaar. 
A Iveolina simiosa, Carter, (4) p. 454, mentioned as a new species or 
variety from the Gulf of Manaar and South-west Coast of Australia. 
Carpenteria microscopica^ Carter, (4) p. 449. Embryonic form of C. 
monticularisj described Ann. N. H. (4) xix. p. 213, pi. xiii. fig. 11. 
Carpenteria rhaphidodendrum^ Mobius, (6) p. 81, pi. v. figs. 6-10, pi. vi. 
figs. 1-6 ; contributes to the building up of coral reefs off Mauritius, also 
from Marshall Archipelago, Pacific. Observed in the living state : the 
test is thickened by means by means of the pseudopodial protoplasm ; the 
chambers are not spirally arranged. Originally named by the author 
[MS.] Rhaphidodendrum album. 
Entosolenia alata, Mobius, (6) p. 89, pi. viii. fig. 5, E. perforata, id. ibid. 
p. 90, pi. viii. fig. G, Mauritius. 
Bolivina ambulacrata, Mobius, (G) p. 95, pi. ix. figs. 14 & 15, Mau- 
ritius. 
Tretomphalus, Mobius, (6) p. 98. Based on Rosalina bulloides, D’Orb.; 
differs from Discorbina in the possession of pores opening on papilla3, 
as well as the ordinary pores. 
Rhaphidohelix, Mobius, (6) p. 76. Based on R. elegans, id. ibid. pi. ii. 
fig. 2, Mauritius. Composed of spheroidal chambers, spirally aggregated; 
the test of the single specimen consisted chiefly of sponge-spicules ; 
perhaps perforate. 
Shepheardella, Siddall [also named in the description of the plates, 
Shepheardia\ (7) p. 130. Based on S. tceni\i\formis, sp. n., id. ibid. pis. xv. 
& xvi. figs., sea off Tenby ; [also named Shepheardella tcenia, evidently 
unintentionally]. Of flat, ribbon-like form, and comparatively large 
size, provided with a flexible integument, body consisting of yellowish 
granular protoplasm, with oval nucleus and sometimes with scattered non- 
contractile vacuoles ; the integument is perforated at each end for the 
egress of two masses of protoplasm, which emit filiform pseudopodia, and 
from which a coat of protoplasm, also emitting pseudopodia, extends 
over the exterior of the test. The sarcode circulates rapidly, and the 
nucleus has the power of independent movement. At certain times, con- 
centration of the body takes place, after which it leaves the test, divides 
into four pieces ; the pieces then reunite ; amoeboid masses, with lobose 
pseudopodia, become detached from this mass. A tri-nucleate specimen 
occurred. The nucleus consists of a lenticular body and two external 
coats ; the inner of these is incomplete at one side, and its edges move 
alternately to and from each other in life. 
Nebela retorta, Leidy, P. Ac. Philad. 1879, p. 162, Swamp, New Jersey, 
U. S. 
