in r,innnnnn ,„;,l„rlrsMu\ C ninnri. Ml I 11." inal.Tial vvas coliccted 

 al IMyiiM.iilli. TlM'srlIolollMii-i.inshavcavci-ylocalizfMl and rc-slricU'd 

 .li^hdMiliui. in ll.al n.-if;ld)nnrli(..).L llic rnruninria' Ix'inK particii- 

 larv scam> an.l llir ix-nmlau;.- ol' inlVcbMl animais siiiall, so 

 l|,.,'l. _ ,.s|)«'ciall\ m tlic .use of tli.' n.-w loi ni, — I liavc not yet 



I n ahl.' t.. ..l'Iain ail lli." sla^-'S 1 sli.)id.l l.avc lik.'.l. In ll.is 



„,.tr. 1 wiii principally .•onsidcr, hriclly, llie troplih; slaves ul" Ihe 

 IKiiasil.'s. M.'iho.ls ol" ("xaniiniiiK ;md olLechniqne wilI Ix'fnlly dealt 

 willi in lli." dclail.'.l acconnl. 



r. //•/•/v////f///.s livcs cilhep in tlic Innicn of. or attaclicd to, Ihe 

 |,lo(».l-vcss('ls. Thorc is no delinile relalion i)el\veen llic j^rowtli, or 

 pcriu.! in tlic iiic-liislory, of the aniinalsand the timeof tlioir cva^M- 

 ,,;,li,,n or lli.' vvall ol' the vcsst'l. They niay eitlier coiiie ont wlien 

 qnil.' niinnlc, or, on llic otlicr liand. they inay comiiience sporu- 

 lation wliili' still in tlic kiiiuMi. Tlie parasites are never free in the 

 co'loni.'. 



('. Miitrltinn exliibits a novel variety of tl>e accidentai or casnal 

 nietliod of infection, in that Ihe spores enter the host -t its posti-rior 

 end, thronji;li the cloacal aperliir.'. They are -iicked uj) hy the inha- 

 laid eurrent inl.» the respiratory trees, in the branches of which 

 Ihey are sonie timesabundant. The sporozoïtes, liberated,doubtless, 

 by ihe action of Ihe excretory acids known to occur in the trees, 

 pass atone.' iido the lissne of the wall, where, as trophozoïtes, 

 they ^row to a considérable size. becoining perfectly spherical in 

 shape. Besi(h's this position, the parasites are also fonnd attached 

 lo the .■(L-loiiiif.'|»itlit'liniii of th.' body-wall, of the relrador-muscles 

 an.l of varions more or less vascular strands which cross the body- 

 .•a\ ily. .'hielly in the hinder part. They are never in, or in any way 

 r.'lal.'.l to. Ihe vascular System proper in connection with the 

 gui. ami, <>; vioiisly. do ii.it reacli th.' site of infection by way of the 

 moiilh an.l intestine, as does Ihe other species. This diversity is 

 (■x|>lain('.l by the dilVerent mode of feedinj< of the two hosts. 



l'Iir Cijshiliiiif in (uie of thèse last-tlescrilied situations exhibit 

 the typical adidl greKariniform shape, — hère, elongate-ovoid. 

 Th.- parasites, - probably when young, before becoining- large and 

 spherical - pass t hi-ongli llie wall of the Ire.- into the body-cavily and 

 are passively carried aboul by the movements of the coîlomic iluid, 

 lill Ihey tonch a snitable place, to which they at once adhère, doubt- 

 l.'ss by means .)f a little sécrétion. I hâve never seen any free in 



