634 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Perispira stropliosoma bears a ciliated ridge-like spiral elevation 

 across the anterior part of body. Lacrymaria teres differs from L. 

 truncata chiefly in the possession of complex contractile vacuoles, of 

 which there are two spherical ones, connected by a narrow tortuous 

 canal ; also in the absence of the convoluted nucleus. 



Lcucophrys curvilata contains no chlorophyll found in L. emarginata 

 Stokes. 



Strombidinopsis acuminata has at the posterior end of the body a 

 pointed process ; the anterior ciliary wreath is circular. 



Vorticella jloridensis has a campanulate body which can change 

 its form by elongation or compression. 



Cothurnia canthocampi differs from C. astaci in the absence of tho 

 eversion of the anterior border, and in the very short distance to 

 which the expanded zooid extends beyond tho lorica. 



Fresh-water Infusoria.* — Eeferringto the encystment of Rotifers 

 during the slow drying up of ponds, merely for protection, Dr. D. S. 

 Kellicott remarks that the same " protective " encystment in Infusoria 

 must not be confounded with " dujdicative " or with " sporular " 

 encystment, previous to fission or to division into spores. The 

 author considers that Vorticella brevistyla d'Udekem, V. rhabdostyloides 

 Kell., are synonymous with Spastostyla sertularium. Geza Enty 

 formed the genus for Vorticellids in which the upper part of the 

 stalk is flexible. The cyst of the species is oval. 



AmpMlepAus meleagris forms its cyst upon the stalk of Opercularia 

 nutans after devouring it ; and he also found numerous cysts on the 

 thick pedicels of 0. rugosa. While encysted Ampliileptus divides 

 into two bodies, which escape as ciliated forms, similar to but smaller 

 than the parent. 



He notices the internal budding of Podophrya quadripartita, but 

 was unable to confirm Biitschli's account of the change in the nucleus 

 from a granular to a fibrillated condition. 



In another communication f Dr. Kellicott mentions the peculiar 

 Vorticellid Epistylis ophidioidea in which, besides the ordinary 

 individuals, there are, in a colony, a few elongated snakelike forms, 

 which he regards as having some relation to reproduction. This 

 species has been recently taken in the deep water of Niagara. 

 Amongst the Tentaculifera, the following new forms are described : — 



Acineta cuspidata has a spheroidal body which does not quite 

 fill the shortly-pedunculated lorica. There are only a few tentacles, 

 which are long, flexible, and slightly thickened at the extremity. 

 The edge of the lorica is raised up into a point on each side between 

 the two groups of tentacles. This species is closely allied to the 

 marine A. dibdalteria. 



A. flava has a triangular compressed lorica, with a slender 

 pedicle, which is flexible just below the lorica. The body is not 

 adherent. The tentacles are few, short and distinctly capitate. 



* The Microscope, vi. (18SG) pp. 53-8 (4 figs.). 



t Proc. Anier. Soc. Micr., 8th Arm. Meeting, 1885, pp. 38-47 (1 pi.). 



