-[2 Protista. 



alljährlich Setzlinge von Hecht, Aal und ev. auch Barsch dem Kanal zugeführt werden, 

 da in diesem die Laichverhältnisse ungünstig sind und die Möglichkeit zur Wanderung 

 sehr erschwert ist. Loeser (Dillingen a. d. Saar). 



Hierzu: Nr. 37, 41, 77, 101. 



Protista. 



32) Douyllle, H., Les Foraminiferes de l'ile de Nias. In: Sammlgn. des geolog. 

 Reichsmuseums in Leiden, A'III, S. 253—278, 1912. 



33) Douville, H., Quelques Foraminiferes de Java. Ibid. S. 278—293. 



Systematische Beschreibung fossiler Formen beider Inseln. 



J. C. H. de Meijere (Hilversum). 



34) Ross, E. H., The Development of a Leucorytosoon of Guinea- 

 Pigs. In: Proc. Roy. Soc. London, Vol. B. 85, S. 67—72, 1912. 



Kurloffs bodies in the large on nuclear leucocytes of the guinea-pig are 

 identified as a Lmcocytosoon, for which the name Lympliocytosoon cohayae is pro- 

 posed. The young stages contain a double dot of chromatin. The dots increase 

 in nuniber, and elongate to rods, which develop a stout flagellum at each end. 

 The flagellate rods divide by longitudinal fission, until the parasite contains "a 

 conglomerate mass of worm-like spirilla". At maturity the parasite becomes free 

 in the plasma, and bursts, liberating the spirillum-like bodies. By dark ground 

 Illumination they were seen as free-swimming spirochaete-like bodies. In the 

 blood of newly-born guinea-pigs, these lymphocytozoa are not to be seen. 



Lew in (Cambridge). 



35) Fantham, H. B., Herpetomonas pedicxili nov. spec, Parasitic in 

 the Alimentary Tract of Pediculus vestimenfi, the Human Body 

 Louse. In: Proc. Roy. Soc, London, Vol. B. 84, S. 505—517, 1912. 



This flagellate is transmitted from louse to louse by an encysted stage which 

 is voided with the excrement of the host. When another louse feeds at a spot 

 on the skin fouled by excrement, the cysts are drawn iuto the fore gut. The 

 cysts give rise to the "preflagellar" form, provided with nucleus and blepharo- 

 plast, but aflagellate. 



By the growing out of a Single flagellum (anterior) the flagellate stage is 

 reached, during which multiplication occurs by simple longitudinal division or 

 rarely by division rosettes. 



Aggregation rosettes are common. When the parasite passes into the hind 

 gut, the encysted stage appears. Lewin (Cambridge). 



36) Robertson, Muriel, Notes on some Flagellate Infections found 

 in Certain Hemiptera in Uganda. In: Proc. Roy. Soc. London, Vol. B. 85, 

 S. 234—240, 1912. 



In Leptoglossus mcmbranaceus a flagellate of the herpetomonad type was 

 found in the gut and in the salivary glands. Dysdercus casiatus shews infection by 

 typical Herpetomonas in the gut, Carhula jipensis rare und slight infections with 

 a Herpetomonas. In a Reduviid and in a Capsid bug crithidial and herpetomonad 

 forms were found. The authoress is inclined to consider it most probable that 

 only one species is concerned in each case, tlie herpetomonads being the adult 

 form, and the crithidia transitory growth forms. Lewin (Cambridge). 



37) Duke, H. L., The Transmission of Trypanosoma waww w (Laveran). 

 In: Proc. Roy. Soc. London, Vol. B. 85, S. 4—9, 1912. 



