H^MOSPORIDIA IN BIRDS, REPTILES, ETC. 105 



species appertaining to the Ophidia, seven to the Saurians, three to the Croco- 

 diles, and nine to the Chelonians. One of these species (from a tortoise; 

 Trionyx indicus} is classified as belonging to the genus H&mamceba 

 ( plasmodium), and has been described by Simond as H. Metschnikowi. 



The Haemosporidia of the amphibians are usually ascribed to the genus 

 Lankesterella ( Drepanidium, Lank., nee Ehrb.). The differentiation of the 

 species has been disputed : the species we have known longest, as well as 

 best (see above, p. 83) is Lank, minima (Chauss), ( Drepanidium ranarum, 

 R. Lank.), from Rana esculenta. Drepanidium princeps, Labbe, is identical 

 with this species, and very probably also Laverania ranarum, Gr. et Fel. (= 

 Hcemogregarina ranarum, Kruse), and Dactylosoma splendens, Labbe. Lank, 

 monilis (Labbe) may be a particular species that certainly resembles Lank, 

 minima in the early stages, but differs from it when fully developed. Perhaps 

 Drepanidium magnum, Grassi and Fel., is also an independent species, as is 

 certainly H&mogregarina Riedyi, Eisen. In this Calif ornian variety Batra- 

 choseps attenuatus is the host ; all other forms are European and live in 

 Rana esculenta. One other form, known formerly as Cytamceba bacterifera, 

 Labbe, from the green frog, is to be entirely eliminated, because what 

 was so termed is not a living organism at all but phases of degeneration 

 in the blood corpuscles induced by long bacteria (Laveran). 1 



Gros (1845) and Wedl (1850) appear to have been the first to see Haemo- 

 sporidia in the blood of fishes. Danilewsky (1889) gives a short account of the 

 latter in Perca fluviatilis, and two species have been recently described by 

 Laveran and Mesnil 2 (Hcemogregarina Simondi, from Solea vulgaris, and H. 

 bigemina from Blennius pholis and B. gassorugine). 



THE MOST IMPORTANT LITERATURE. 



DANILEWSKY, B. Die Haematoz. d. Kaltbliier (Arch. f. mirk. An., 1885, xxiv., p. 



588). 



Mater, p. serv. a la paras, du sang (Arch. slav. de biol., 1886, i., pt. 89). 

 III. Hemat. des lezards (ibid., p. 364). IV. Hem. d. tortues (ibid., 1887, ii., pp. 



33, 157. 370). 



La parasitol. comp. du sang. Charkow, 1889 (Russ.). 

 Develop, d. paras, malar, dans les leucocytes des oiseaux (Ann. Inst. Pasteur, 



1890, p. 427). 

 Sur les microb. d'infect. mal. (ibid., p. 753). Contrib. a 1'etude de la microbiose 



malar, (ibid., 1891, p. 758). 

 GRASSI, B., and R. FELETTI. Malariapar. i. d. Vog. (C. f. B. u. P., 1891, ix., pp. 403, 



429, 461). 



Weiteres z. Malariafrage (ibid., 1891, x., pp. 449, 481, 517). 

 Contrib. allo stud. d. paras, mal. (Atti Ace. gioenea sc. nat., Catania v., Ser. 4, 



1892). 

 CELLI, A., and F. SANFELICE. Sui paras, d. glob, rosso nel uomo e negli anim. (Ann. 



1st. d'ig. esp. R. Univ. Roma. N.S , 1891, i. 

 Fortsch. d. Med., 1891. Nos. 11-15. 

 KRUSE, W. Ueb. Blutparas. (Virch. Arch. path. An., 1890, cxx., p. 451, and cxxi., 



P- 359)- 



1 Laveran, A., " Sur le bacille parasite des hematics de rana esculenta " (C. R. soc* 

 biol., Paris, 1899, i., p. 355. 



2 Laveran, A., and Mesnil, F., " Deux he.mogr. nouv. d. paras." (C. R. Ac. sc., Paris, 

 1901, cxxxiii., p. 572.) 



