IO4 



THE ANIMAL PARASITES OF MAN 



Still a third species known as Lankesterella avium (Labbe) has been 

 observed, particularly in the blood of birds of prey. Only the stages of 

 schizogony are known. 



The number of haemosporidia known in the blood of reptiles is far 

 more numerous, and all, with one exception, are referred to the genus 

 Hcemogregarina ; * they are, as a rule, comparatively elongated creatures 



FIG. 45. Hcemogregarina Stepanowi, 

 Danil., in the red blood corpuscles of 

 Cistudo europaa. (After D anile wsky. ) 



FIG. 46. H&mogregarina Ste- 

 panowi, Danil., in schizogony. 

 The blood corpuscle is still there, 

 its nucleus at the edge ; to 

 the right two merozoites. (After 

 D anile wsky.) 



(fig. 45) that occasionally attain a length double that of the blood cor- 

 puscles, and also occur free in the blood plasma. As we do not know 

 the entire development, and only schizogony (fig. 46) has been observed, 

 T will confine myself to the enumeration of the species : 



i. Hcemogregarina Stepanowi, Danil. . . 



2. 



3- 

 4- 



5- 



6. 

 7- 



8. 



9- 

 10. 



Labbei, Born. 

 Laverani, Simond . . 

 Mesnili, Simond . . 

 Billeti, Simond . 



Hankini, Simond . . 

 crocodilinorumJSdrn . 



lacertarum, Danil. . . 



Lacazei, Labbe , . , 

 platydactyli, Billet . . 



Cistudo europ&a, Trionyx sp., 



Testudo marginata. 

 Platemys sp., Clemmys elegans, 

 Cryptopus granosus, 

 Emys tectum, 

 Trionyx stellatus, 



Gavialis gangeticus, 

 Crocodilus frontatus, Alligator 

 mississipiensis , 



Lacerta muralis, L. agilis, L. 



vividis, L. ocellata, 

 Lacerta agilis, L. muralis, 

 Platy. mauritanicus , 





11. ,, bungari, Billet ""., Bungarus fasciatus, 



12. ,, pythonis, Billet .. Python reticulatus, 



13. ,, sp. Billet .. .. Tropidonotus stolatus, 



14. ,, Joannoni, Hagenm. Macroprotodoa cucullatus, 



15. ,, colubri, Born. .. Coluber cssculapii. 



This list is not, however, complete, because several authors have not given 

 names to the haemosporidia they have found in reptiles. The total number 

 harbouring haemosporidia with which we are so far acquainted comprises thirty 



1 It is doubtful if this species also occurs in invertebrate animals, though a H. nasuta 

 Eisen, from an Oligochaete, has been mentioned in literature. 



