258 SUMMARY OF CURRENT RESEARCHES RELATING TO 



EpistiiUs vag inula n. sp. owes its name to the peculiar formation of 

 a sheath over the end of the footstalk by the extremity of the con- 

 tracted body, which is characteristic and of diagnostic value. 



Euplotes plumipcs n. sp. is characterized by the finely fringed 

 extremities of the anal styles. The dorsal surface is often orna- 

 mented by longitudinal rows of minute prominences in stellate 

 clusters. Conjugation takes place and reproduction, in which there 

 are some points of unusual interest, by transverse fission. 



Cifcliditim litomesutn n. sp. is distinguished from all other members 

 of the genus by the extreme length of the posterior setce, and by the 

 unclothed central region of the zooid. 



New Choano-Flagellata.* — A. C. Stokes describes new forms of 

 these Infusoria from ponds in Western New York. 



Monosiga ohovata n. sp. — The body bears a remote resemblance to 

 that of M. angiistata S.K., but the creature conspicuously difiers in 

 being elevated on a long pedicel, in the relative shape of the body, 

 and in its much greater size. 



Codosiga utriculus n. sp. has the zooids attached in clusters of four 

 to the summit of a straight rigid footstalk. This arrangement leads 

 the author to discuss Kent's Codosiga umhellata, and to state his belief 

 that the typical form of this latter species has the quadripartite 

 pedicel, whilst the bitripartito is the variety. 



In C. magnifica n. sp. the main stem is considerably longer than 

 that of C. umhellata, and bears just twice as many primary branches, 

 each of these being furcated, and each of the secondary branches 

 giving origin to four branchlets, every one of whicii usually sujiports 

 two zooids. The entire formation is easily distinguishable under a 

 1 in. objective. 



Salpingoeca spTicencola n. sp. and S. lag en a n. sp. — The latter differs 

 from all known pedicellate species in the evenly rounded contour of 

 the lorica base. 



Flagellata (Dinobryon) as Members of the Pelagic Fauna of 

 Lakes. I — 0. E. Imhof has found two new forms of Dinobryon, 

 D. calyculatum,a.xii one provisionally named D. petiolatum ; he con- 

 siders that the identification, attempted by Kent, of D. petiolatum 

 Dujard. with Poteriodendron petiolatum Stein is not correct. The 

 form of the chambers of each individual and their arrangement in 

 colonies is entirely different in the two species. He has foimd species 

 of Dinobryon (the descriptions of which are promised) in numerous 

 lakes in Savoy, Upper Italy, Switzerland, the Tyrol, Upper Bavaria, 

 Salzburg, and Styria, and he contemplates shortly publishing his 

 results on the extension of the pelagic fauna, according to his personal 

 researches, over sixty-five lakes in the countries named, as well as the 

 results relating to the deep fauna of a great number of them. 



Calcituba polymorpha.J — This is a new genus and species of 

 imperforate Foraminifera from the Adriatic, discovered by Dr. Zoltau 



* Amer. Mon. Micr. Journ., vi. (1885) pp. 8-12 (7 figs.). 



t Arch. Sci. Phvs. et Nat., xii. (1884) pp. 442-3. 



X SB. K. Akad.'Wiss. Wien, Ixxxviii. (1883) pp. 420-32 (1 pi.). 



