SARCOSPORIDIA ^3 



found a vacuole-like, polar capsule area in the spores of S. colii 

 from the African mouse-bird. The sarcocystin may be contained 

 in the polar capsule. The nucleus of the spore is generally at the 

 opposite, blunter end. 



Again, various authors have stated that Sarcosporidian spores may 

 occur in the blood of the host at times. If so, then an intermediate 

 host may be concerned in their transmission. Perrin suggested that 

 Sarcosporidia might be spread by blow-flies and flesh-flies. 



The classification of the Sarcosporidia as proposed by R. 

 Blanchard, which was based on their various habitats, can no longer 

 hold, because the same species may occur in the muscles as well as 

 in the connective tissue. For the present, the few species that are 

 known may be placed in one genus, Sarcocystis, Ray Lankester, 1882. 



The following species of Sarcocystis are of interest : 



S. iniescheriana, Kiihn, 1865, in the pig. 



S. bertrami, Doflein, 1901, in the horse. 



S. tenella, Railliet, 1886, in sheep. S. tenella bubali in buffaloes in 

 Ceylon and Egypt. 



S. blanch ardi, Doflein, 1901, in cattle. 



S. ijiuris, Blanchard, 1885, in the mouse, to which it is lethal. 



S. It-net i t Blanchard, 1885, in the seal. 



S. colii, Fantham, 1913, in the African mouse-bird, Colius 

 erythromelan. 



Also various Sarcosporidia from antelopes, monkeys, opossum, 

 birds, the gecko and wall-lizard are known. 



The spores of S. mnris, S. bertrami, S. tenella, and S. colii can 

 multiply by longitudinal fission. 



SARCOSPORIDIA OBSERVED IN MAN. 



(r) Lindemann 1 found on the valves and in the myocardium of 

 a person who had died of dropsy certain brownish masses, 3 mm. in 

 length and 1-5 mm. in breadth which he regarded as gregarines. If 

 these were actually independent animal organisms it may be suggested 

 that they were Sarcosporidia. Rivolta (1878) named the species 

 S. lindemanni. 



(2) Rosenberg 2 found a cyst 5 mm. in length and 2 mm. in breadth 

 in a papillary muscle of the mitral valve of a woman, aged 40, 

 who had died from pleuritis and endocarditis. The cyst contained 

 no scolex nor booklets of taenia. Numerous small refracting bodies, 

 round, oval or kidney-shaped, were found in a daughter cyst, as well 



1 " Ueb. d. hyg. Bdtg. d. Gregarinen," Dtsche. Ztschr, f. Staatsarzneikunde, 1868, xxvi, 

 p. 326. 



2 " Ein Befund von Psorosp. in Herzmusk d. Menschen," Ztschr. f. Hygiene, 1892, xi, 

 P- 435- 



