260 SPOROZOA. 



and do not completely fill the red-blood corpuscles. Hsemo- 

 zoin pigment granular. Gametocytes elongated, wormlike- 

 and somewhat sickle-shaped, so-called " crescents." Parasites 

 of man and anthropoid apes. 



Remarks. — Laverania malaria, the parasite of mahgnant 

 tertian or tropical epidemic malaria in man, and Laverania 

 reichenowi, the parasite of the gorilla and chimpanzee, are 

 included in this genus. The species of 'this genus show 

 considerable resemblance with Proteosoma of birds. 



231. Laverania malarise Grassi & Feletti*. (Figs. 122 (PL I), 

 133, & 134). 



Malarial parasites, Laveran, 1880 a, p. 158; 1881, pp. 627-30; 



1882, p. 737. 

 Oscillaria malarise (part), Laveran, 1883, p. 113. 

 A third type of malarial parasite, Golgi, 1886 a, p. 109 ; 1886 b, 



p. 419; 1889, p. 173. 

 Hsemamceba malarise, Laveran, 1890, p. 374. 

 Hsemamoeba malarise prsecox-\-H. malarias immaculatum, Grassi & 



Feletti, 1890, p. 10. 

 Hsemamceba prsecox, Grassi & Feletti, 1890, p. 6 ; 1892, p. 10. 

 Laverania malarise, Grassi & Feletti, 1890, p. 4 ; 1892, p. 10. 

 Hsemamoeba febris quotidinse, Marchiafava & Bignami, 1891. 

 Hsemamceba immaculata, Grassi, 1891, p. 14; Grassi & Feletti, 



1892, p. 10. 

 ■[Hsematomonas malarias, Hehir, 1893, pp. 207-12, 241-8, 273-80, 

 pis. i-viii. 

 Hsematozoon falciparum, Welch, 1897, pp. 36, 47. 

 Plasmodium malarise prsecox, Labbe, 1899, p. 82. 

 Plasmodiujn malarise iinmaculatum, Labbe, 1899, p. 82. 

 ^Hsemomenas prsecox, Ross, 1899, pp. 322-4, 439 ; 1900, pp. 522-7. 

 Plasmodium prsecox, Liihe, 1900, p. 460. 

 Laverania prsecox, Neveu-Lemaire, 1900, p. 9, pi. i, fig. 37. 

 Laverania malarise, Minchin, 1903, pp. 243-54, 267, 332, 351, 



fig. 68. 

 Hsemamoeba malarise, Laveran, 1907, pp. 110-60 ; fig. ii, pi. i. 

 Plasmodium prsecox, Doflein, 1909, pp. 662-70, figs. 596-609. 

 Laverania malarise, Doflein, 1909, pp. 662-70, figs. 596-609. 

 Plasmodium falciparum, Bass & Johns, 1912, pp. 567-79 ; Minchin, 



1912, pp. 358-60, fig. 156. 

 Malignant tertian malarial parasites, Thomson & Thomson, 1913, 



pp. 77-87, pi. X. 

 ^Plasmodium falciparum. Row, 1917, p. 392, pi. xxiii. 

 ■\Lav6rania prsecox, Row, 1917, p. 392, pi. xxiv. 

 Laverania malarise, Castellani & Chalmers, 1919, pp. 517-18, figs. 



174, 175, pi. i, figs. lc-4c. 

 Plasmodium immaculatum, Miihlens, 1921, pp. 1502-11, pi. xxxi, 



figs. 20-50 ; pi. xxxii, figs. 26-40 ; pi. xxxiii, figs. 2, 5-21 ; 



text-figs. 4-7. 



* The retention of the gemis Laverania for the parasite of malignant 

 tertian Malaria is in accordance with Opinion 104 of the Intern. Conam. 

 on Zool. Nomenclature. Many malariologists, however, consider that 

 the separation of this parasite from those of benign tertian and quartan 

 Malaria is not required on zoological grounds, and include all three 

 species in the geuus Plasmodium ; if this latter classification be followed, 

 the name of the malignant tertian parasite will be Plasmodium falci- 

 parum (Welch). — Editor. 



