ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 469 



but gradually diminishes, and finally the rate of division falls below that 

 of the control, followed by fluctuations above and below the rate of the 

 control. (3) An increase (doubling) of the amount of alcohol administered, 

 however, will again cause a more rapid cell-division for a limited period. 

 But again the effect is not constant, since the rate of division falls below 

 the control, and is followed by fluctuation above and below the division 

 rate of the control. The amount of alcohol was doubled three times, 

 always with the same result. (■!) Treatment with alcohol lowers the 

 resistance of the organisms to copper sulphate. 



Trypanosome in European Bison.* — K. J. Wrublewski describes a 

 trypanosome from the bison (Bos bonasus) in the forest of Bielovege 

 (Bielowesch). It may be noted that only two species of pathogenic 

 trypanosomes are known in Mammals of temperate zones, viz. : 

 T. rougeti and T. theileri, but there is no evidence that this form in the 

 bison, which is quite distinct, is pathogenic. A. Wladimiroff and W. 

 Yakimoff f testify to the newness of the bison trypanosome, for which 

 the name T. wrubleivskii sp. n. is suggested. 



Balantidum coli in Macaque Monkey4 — F. Noc describes a case of 

 dysentery in Macacus cynomolgus, which seemed to be due to Balantidium 

 coli, an Infusorian known to occur in some forms of human dysentery. 



Hsemogregarines of the Lizard.§ — C. Franca describes several species 

 of Hsemogregarina from Lacerta ocellata — H. schaudinni France, a new 

 variety, afrkana, of the same, H. curvirostris Billet, H. biretorta Nicolle, 

 H. akollei sp. n., and H. minuta sp. n. 



Studies on Sarcosporidia.fl — A. Negri has studied Sarcocystis muris, 

 and finds evidence that a definite and regular process of division goes 

 on in the spores. The significance of this division is obscure. 



Parasites from Lobster's Intestine.il — L. Leger and 0. Duboscq 

 describe Anoplophrya minima sp. n., a mouthless Ciliate ; Aggregate/, 

 vagans Leg. et Dub. ; Porospora gigantea E. van Beneden ; and Seleno- 

 coccidium intermedium g. et sp. n. The schizozoites of this new genus 

 are like the young vermiform stages of Porospora, but there is a schizo- 

 gony cycle quite different from that of the Porospora. The chief interest 

 of Selenococcidium is that its vegetative stages are those of a Schizogre- 

 garine (Selenidium, Siedleckia), while its sexual process is that of a 

 Coccidian. 



Costia as a Trout-parasite.** — Louis Leger discusses the disastrous 

 results due to Costia, which so frequently attacks trout-fry. It is very 

 important to avoid feeding the larva3 on material from infected waters. 

 Hofer recommends treating the infected fry for half an hour with salt 

 water (20-25 gr. of sea-salt in 1000), but this is difficult when there 



* Centralbl. Parasitenk., xlviii. (1908) pp. 162-3 (1 pi.). 

 t Tom. cit , p. 164. 



% C.R. Soc. Biol. Paris, lxiv. (1908) pp. 878-80 (1 fig.). 

 § Arch. R. 1st. Bacter. Camara Pestaua, ii. (1909) pp. 339-60 (1 pi.). 

 || Centralbl. Parasitenk., xlvii. (1908) pp. 56-61 (2pls.). 

 f Cornptes Rendus, cxlviii. (1909) pp. 363-5. ** Tom. cit., pp. 1284-6 



