10 Prot. 
PROTOZOA. 
•Plate, L. Ueber die Conjugation der Iufusorien. SB. Ges. Munch, ii, 
pp. 35-37. 
. Ueber eiuiger an den Kiemenbliittern des Gammarus pulex leben- 
den Ectoparasiten. Z. wise. Zool. xliii, pp. 175-241, 2 pis. ; J. R. 
Micr. Soc. vi, pp. 771-773. 
Structure and history of parasites on gills of Gammarus pulex — Den- 
drocometes paradoxus , Spirochona gemmipara , Lagenophrys ampulla , with 
general notes on conjugation, &c. 
Pouchet, G-. Sur Gymnodinium polyphemus , P. C.R. ciii (1886), pp. 
801-803. 
Gymnodinium polyphemus, n. sp., possesses complex eye, with trans- 
parent highly refractive lens embedded in red or black pigment. Both 
“ lens ” and “ choroid ” formed from concentration of elements distinct at 
earlier stage. 
^Railliet, A., & Moul6, L. Notes sur quelques Sporozoaires. Bull. 
Soc. M6d. vdt6rin. 15 pp., 1 pi. 
Roboz, Z. v. Beitriige zur Kenntuiss der Gregarinen. Math. Nat. Ber. 
Ung. iv, pp. 14G & 147 ; J. R. Micr. Soc. v (1887), pp. 769 & 770. 
Gregarina flava, n. sp. in Salpa hicaudata, Three separate divisions in 
body. Longitudinal and transverse muscular fibres. Pores in cuticle. 
Partitions from continuation inwards of cuticle. Karyokinetic changes 
in nucleus. Details of conjugation. 
R(eser, P. [See Gouiuiet, P.] 
Rosseter, T. B. On Trichodina as an Endoparasite. J. R. Micr. Soc. 
. 1886, pp. 929-933, 1 pi. 
New species in Triton (urinogenital organs). 
Rzehak. Bemerkungen fiber einige Foraminiferen d. Oligocanformat. 
Yerh. Yer. Brfinn, xxiii. 
Salensky, W. Die Urform der Heteroplastiden. Biol. Centralbl. vi 
(17), pp. 514-525. 
Primitive form of Heteroplastid, a spherical colony of Flagellates, 
vegetating and reproducing like Volvox. Some reproductive cells become 
endoderm, genitoccel becomes a phagogenitocoel, and a genitogastrula 
arises. The archenteron of Metazoa is homologue of genitoccel. The 
blastoccel is a new formation. The blastopore is the primitive aperture 
of the Volvox colony. Different forms of blastula are not homologous ; 
sohizoblastulse nearest primitive type ; gastroblastulae have arisen by 
acceleration of differentiating process. 
*Schneider, A. Fragments sur les Infusoires. Tablett. Zool. i, pp. 
82-87, 4 pis. 
° . Anoplophrya circulans. T. c. pp. 73-80. 
