Ft^. / 





abrsaldvfiswn' '. 

 notoc/vord. ■ - - - 



vofntrve-iiibe.. 

 eye.- spot. 



"■^,^^e==^P=^a3?;^ 



« , , , blood-vessel' ■ 



I^. praiuxr)rslU^ gi^^ .j^ 



re^uilce//sof atrial floor ^ \j u^ 7' ■ ■ 



6 sejcondaryi^i^kemi^s 

 ft/uU^U^nf of sec. row of pill' sUts^ 



e/i^e ofUfi rmtofleur. 



scusti oroa/i- optruna 

 into pr^OKEd/pit. '^ 

 tJidos^ie'. 

 haped.j'land 

 ^primary slit. 





unai, cdls of cuiriaZ floor 



Fiff.J. 



■ , . , ^?^vrun<uy slid. 



lower rfiajyin' or rnoh*^- ^ ' 

 intra,ftu:caior, iii5| of 



r!„i,.shapt<igLlA ri^UlimiofuidosiyW. 



/■y.f.3 



.M^.fot^/m.^ra{y.nXII,lsM.IIII. 



intriXf -iuccaZorifCco of clu^- shaped' 



rioAt waiC ofveZa/Tv. 



nien€i 7 uirooport 



epkrimm'jfifatE ^ ^ 



ipvtr edffc of oral Jwocu 



J ^^priTnojy sUi/. 



Fiij. ^. 



p. slit' 



' -''r- Umi of endostyle.. 



ed^e ofrtakt TytfiapZeiir. \ 1 f^primAry sU/y. 



lower edae a ^/notut 1 



iJidosfyU fri^h^ UmhJ 



-x- 



r TOraZpiA 



tinnnnnrv^ 



J^^prtm, sUt/ aUatcO' hand' 



/« ^pri/TKXrj sltt. 



inira^&uccaJj orifice. ofcUi^-skaped/ 



p rc^rolpit. 



\^^9^,^i 



' ' ■'if^"^ curiam, ^ 



■ rlrXL ClCOOL VeSSC/ 



jn«^<„ofupfer£lcwer ^i,,a2ioryeIu. 

 V iiTt^r iiuircdpove 



hraachial ccorlcu. , • jst^.,, ^7,/, 



riffkC yvaZd afveZuT^v 



Fiq. S. 



branxht-ol aorta. 



stLondary slUs ^ 



VftHey del 





ri^hJ/ wcdl, ofvelu/i^. 



•KoralpU , "^'- 



it?;fer edae ofo' il/food 



rufhiwallofveitu ■ «f<^'»5 „ , ,, 



e/x^t ot lUt me^leiu- 



?HuOi,UtHEain' 



