324 SPOROZOA. 



annular, the chromatin being concentrated into an excentric 

 nucleus or at the two poles. 



Remarks. — De Mello regards these bodies of doubtful 

 nature, and intermediate between Grahamella and Para- 

 plasma. 



Habitat. — Blood of the ant-eater, Manis pentadactyla Linn. : 

 Portuguese India, Nova Goa. 



Genus PARAPLASMA Seidelin, 1912. 



" Seidelin bodies," Seidelin, 1911, pp. 282-8. 



Paraplasma, Seidelin, 1912, pp. 503-4 ; 1914 a, pp. 203-8 ; Wenyon 



& Low, 1914, pp. 369-72 ; 1915, pp. 55-6 ; Seidelin, 1915, 



pp. 38-40 ; Seidelin & Connal, 1915, pp. 427-48. 

 " Seidelin bodies," Thompson, 1915, pp. 479-82 ; Fowler, Simpson, 



Ross, Leishman, & Balfour, 1915, 3rd report ; Cropper & Drew, 



1916, pp. 20-4 ; de Mello, 1917, pp. 21-4. 



Polymorphic intra-corpuscular bodies, ranging from a small 

 chromatic granule to large bodies consisting of a chromatic 

 granule with a shaft of cytoplasm. 



Remarks. — SeideUn, who first described these bodies, con- 

 sidered them to be the causative agent of yellow fever, and 

 named the organism Paraplasma flavigenum. Seidelin and 

 Connal (1915) considered the organism to be capable of trans- 

 mission by artificial infection, and claimed to have discovered 

 naturally infected guinea-pigs in West Africa, which were 

 supposed to be reservoirs of the disease. Wenyon and Low 

 (1914, 1915) refuted the parasitic view and showed that similar 

 bodies were found in guinea-pigs in England, and especially in 

 young animals. Finally, this latter view was supported by the 

 Yellow Fever Commission, who reported (1915) that P. flavi- 

 genum was not an organism, and was not connected with 

 yellow fever. Cropper and Drew (1916) reported the occurrence 

 of similar bodies in ansemic foetal blood. 



271. Paraplasma sp. (Fig. 160.) 



t" Seidelin bodies " (?), de Mello, de Sa, de Sousa, Dias, & Noronha, 

 1917, pp. 21-4, pi. ii, figs. 1-20. 



Circular, vacuolated bodies occurring in groups of two, three 

 or four in red blood-corpuscles, or in the form of thin or thick 

 bacilli or vibrios. 



O0©©(5(!) 



A B C D £ F 



Fig. 160. — Paraplasma sp. (After de Mello and others.) 



