ZOOLOGY AND BOTANY, MICROSCOPY, ETC. . 477 



and " chromidia-containing." The last become Crithidium-forms, the 

 chromidia condensing into a nnclens. The Crithidia differentiate aa 

 males and females, conjugation occurs, and the result is a Trypan osome. 



New Type of Suctoria on a Copepod.* — E. Chatton and B. Collin 

 describe Rhabdophrya trimorpha g. et. sp. n., a very interesting new type 

 of Acinetaria, which they found growing on a Harpacticid Copepod 

 (Cletodes longicaudatus) at Banyuls. The new genus must find its place 

 in the family of Trichophryidae, beside Dendrosoma and Dendrosomides, 

 but it is very distinctive. Tt is trimorphic, there being tentaculate, 

 vermiform, and reduced unciform individuals. 



New Trichonympha.t— Max Hartmann gives a fine description of 

 Trichonympha hertwiyi sp. n. from the hind-gut of Termites. He gives 

 an account of the striking peculiarities of Trichonymphidse, such as the 

 unique " head-organ," which seems to be a complicated blepharoplast . 

 He describes young stages, the males and females, the division and the 

 formation of gametes. The nucleus is a " poly-energid " nucleus — that 

 is to say, it is made up of many individualized single nuclei, which have 

 arisen by repeated division of a primarily single element within the 

 original nuclear cavity. The author inquires whether the ordinary 

 Metazoan nucleus is not a " poly-energid " nucleus. The Trichonymphidre 

 are so peculiar, he says, that they may require a. class like Ciliata for 

 themselves. 



Leucocytozoon in Fish-Eagle. J — A. Laveran and L. Nattan-Larrier 

 describe L. audieri sp. n. from the fish-eagle, Haliaetus vocifer. The 

 parasites occur mainly in elements which appear to be altered red blood- 

 corpuscles. The macrogametes and microgametes are described. Allied 

 species occur in Parus major, Syrnium aluco, and Meleayris yallopavo. 



New Hssmogregarine from the Horned Asp.§ — A. Laveran and 

 A. Pettit once more illustrate the common experience that when you tap 

 a new host you find a new parasite. They describe Hsemoyregarina 

 seurati sp. n. from Cerastes cornutus. 



Distribution of Myxosporidia.|| — M. Auerbach gives a list of the 

 known forms with their localities and hosts. Most of them are parasites 

 of fishes, but one has been reported from Nais, and another from a 

 butterfly (Tortrix). Amphibians and Chelonians are also infected. The 

 author discusses their occurrence in fresh-water and marine fishes, and 

 their geographical distribution in general. Further investigations are 

 urgently required. 



Lankesteria.il — B. Swarczewsky gives an account of a species of this 

 Gregarine which he found in the gut of Turbellarians in Lake Baikal. 

 He describes the formation of gametes, their conjugation, the formation 

 of sporocysts, and the process of schizogony. 



* Arch. Zool. Exper., v. (1910) Notes et Revue, No. 5, pp. cxxxviii-cxlv (3 figs.). 

 t Festschrift Richard Hertwig, i. (1910) pp. 351-96 (1 pis. and 3 figs.). 

 J C.R. Soc. Biol., lxx. (1911) pp. 6S6-8 (6 figs.). 

 § C.R. Soc. Biol., lxx. (1911) pp. 95-6). 

 || Zool. Jahrb., xxx. (1911) pp. 471-94. 

 1 Festschrift Richard Hertwig, i. (1910) pp. 637-74 (4 pis. . 



Aug. 16th, 1911 2 i 



