41; 



MK. 11. U. ri.IMMKK OX 



I now i-oiuo to (he intnu'ollular pm-atiites, ami will t<vko tii-ist 

 the Ihomogivgariues, whieli are inti-aeelhilar pa nitrites oeeurnnj>; 

 ehietly in the ivptilo group, aiul. so far as my experiouoe here 

 yoes, entirely in that group. I have t\>iiiul them here in li)0 

 reptiles, of (M ditVeivnt speeies, and in 41 of these for the first 

 time. The sehizout is found generally in the erythroeyte of the 

 hi>st. and is an elongated body with a well-marked uueleus, and 

 with no pign\ent. Sehizogony oeeurs generally in the internal 

 orguus, espeeially in the lungs ; this vstage, however, ha« i\ot yet 

 been ol>served in all ea^es. They vary mueh in their eftect on 

 the cell and on the nueleus, and 1 have indieated in the following 

 table the nu>st obviovis of these effects. AVith some hj\?nio- 

 greg-jirines very little change takes place in the cell ; with others 

 the cell gets smaller atid out of shape ; with others it gets 

 enormously enlai'ged and deluemogU^binised. CHhers ag-iiin 

 desti-oy the nucleus, like the Kari/oli/siu^ of lizards and snakes. 

 Some iixfections ai-e very severe, scarcely a cell is nnall'ected. 

 and theiv may be sometiu\es as many as foxir pan^sites in a cell. 

 I have found a very remarkable one of a new type in a Bengal 

 Monitor. This }\'\n\site divides the nucleus of the cell into twc> 

 |mrts which remain connected by a thread of nnclem- material 

 which has a tiny enlargement at its centnvl point. I have 

 found that the schizogony of this jmnxsite takes place in the lung, 

 several stages of which ai-e shown in the Plates. 



H.V.MOO.UKl^AiaNKS KOI ND IX Till: iihOOl) OF KKrXlLKS AXU JBATKACUiAXS. 



Namk. Habitat. 



*3 Moorish Gwkos {TnrmtoUt iiian- ileditevnuieau. 

 ritaitica). 



IVnigral Monitor (ToroHHS h^Hfla- India. 



^'J Hiit-taiUnl SerjHMits (Utchesh 8. .VmericH. 

 •2 Tegnexins (7\ipiHambis teffHfxin). do. 



3 lilack - spotteil Liiards (Algi- Adriivtio. 



*t> lndigx> Snakes (Volnhfr corais)... V. AinovicH. 



\' i v,HCkH>us Snake ( Ta rhoph isfalhur) S . Eim)pe. 



*3 Liuv Monitors ()'<i»mhii.< aiHus). Austnvlia. 



*Hovseshoe Snake (ZatHtmis hippo- S. Europe. 



crt'pis). 



*6 Indian Pjthons {Python ntolurns). India. 



20 Diamond Rattlesnakes (Cit>- Texas. 

 talus ati-o,r). 



*Kiug- Snake {Vorouella ffcttiUi) N. Amcrien. 



Chak.vctkks. 

 Parasites lai'jit> and doubled over at one 



end, soinetimes at both. 

 Nnohnis of cell divided into two by 

 the parasite, with eonnecting thread. 

 Schizoirony in lungs. 

 Host -cells enlargetl. 



Parasites bulky and very full of gninules ; 



many with only remains of nueleus 



att^iched. 

 Short to medium, some bottle-shaptnl : 



chroniidia at both ends : friv sporonts 



in all. 

 Host-cells enlarged and delnvmoglobi- 



nisetl. 

 Medium ; cells nnalteretl. 

 Parasites largi^ and contain gnmules ; 



cells unaltered. 

 Bulky : turne<.l over at one end. 



Host-cells often deformed ; generally 



diminished in size. 

 Host-cells enlarged and dehiemoglobi- 



nised. 

 "\'cry thick, short forms ; some fi-ee 



s-porontij which are long and poiiitetl. 



