ZOOLOGY AND BOTANY, MICKOSCOPY, ETC. 417 



Aspidisca hipartita is a new species remarkable for tlie absence of book-like 

 appendages, and tbe apparent conversion of tbe posterior stylets into cirri 

 or cilia. Glaucoma pyriformis and Euplotes Charon are followed by tbe 

 description of E. gabrieli sp. n. ; tbis is distinguisbed from E. longipes by 

 tbe presence of a frontal tootb, tbe lengtb of tbe frontal cirri, and otber 

 cbaracters, and from E. harpa by tbe absence of longitudinal stride, tbe 

 size of tbe posterior stylets and frontal cirri, and tbe form of its nucleus, 

 wbicb is a large spberical mass. 



(5) Flagellate Infusoria. — Cercomonas crassicauda, C. longicauda, Poly- 

 toma uvella, OxyrrMs marina, Sphseroplu-ya pusilla (witb wbicb S. sol, S. para- 

 mseciorum, S. urostylse, and S. magna are united) are next noticed ; S. 

 massiliensis is a new species in wbicb it is interesting to study tbe pbeno- 

 mena of division ; in it, and probably in otber species of tbe genus, tbere is 

 an external limiting membrane, wbicb takes a sbare in tbe fission ; tbis 

 membrane is identical witb tbat of tbe Acinetae. After a sbort account of 

 Acineta foetida, A. contorta and A. parroceli complete tbe paper ; tbese last 

 are botbnew species, tbe former is large, and botb it and A. parroceli some- 

 wbat recall A. crenata ; tbey are botb very remarkable in tbe fact tbat tbe 

 orifice of tbe test, tbougb wide, is very narrow in proportion to tbe dimen- 

 sions ; tbe arrangement of tbe tentacles in A. contorta is normal, but in A. 

 parroceli tbese appendages are more like tbose of Podophrya elongata wbere 

 they are ranged along tbe body ; tbey are very fine, sbort, and comparatively 

 numerous. A. contorta feeds on Euplotes. 



New Protozoa.* — Mr. W. Milne describes and figures a new form, 

 belonging to the Tentaculifera, to which he gives tbe name Stylostoma 

 Forrestii no v. gen. et sp. It is marine, and was attached to a Cyclops. The 

 new genus is founded on tbe fact that the capitate tentacles do not spring 

 directly from tbe body, but arise in groups at tbe extremities of three arms. 

 Vermiform zooids are described, but were not traced to tbe adult form. 



A new species of Slrombidinopsis is described, to which tbe specific 

 nsime prohoscidifer is given. The truncate end carries numerous "tentacle- 

 like cilia, finely feathered with minute cilia all round their whole length." 

 Inside tbis ring is a membranous collar, and within tbis is a protrusible 

 proboscis. The author compares tbe ring of cilia to tbe membrane of 

 Torquatella, and shows bow it could be derived from tbe latter. A peculiar 

 method of reproduction is noted. A new species of Oxytricha is described 

 as 0. tricornis, Botb tbese forms are marine. Some observations are made 

 on Ophridiiim sessile S. Kent and Amphisia multiseta Sterki, and of tbe latter 

 certain doubtful stages in development are described. 



New Fresh-water Infusoria.f — Dr. A. C. Stokes gives definitions of a 

 number of new genera and species of fresh-water infusorians. Trentonia 

 (T. fiagellata sp. n.) is allied to Baphidomonas ; one flagellum is trailing 

 and one vibratile, and the frontal border is slightly bilabiate ; no tricbocysts 

 were observed; the trailing flagellum is best seen when tbe creature is 

 rendered uncomfortable and sluggish by prolonged confinement beneath 

 the cover, or partially poisoned by iodine ; the author suggests that Baphi- 

 domonas semen may have two flagella ; if not, T. fiagellata will form the 

 type of a new family of Trentoni[i'\d8e. Cyclonexis is a new genus which 

 differs from Uvella in the lateral instead of the posterior union of the con- 

 stituent animalcules, in tbe annular rather than spheroidal form of the 

 colony, and in the very diverse length of the two flagella. G. annularis 

 sp. n. was found with Sphagnum, 



* Pioc. Phil. Soc. Glasgow, 1886, 8 pp. (1 pi.). 

 t Proc. Amer. Phil. Soc, 1886, pp. 562-8 (1 pi.). 



