(47) 



The diverticula of Species, E. , uo not sijov/ ttic rej.iilarly 

 arr-an£;ea vacuoles ■.vhicii Maat errrjaii i-.as aeacribea for ti.c Actino- 

 t roc ha from St. Aaiarews Eay. In fact, 1 aj/ree with Loui^caamps • s 

 (1^.) observations in fiiidint: the histological characters abso- 

 Inr.r.iy aifferent in Species, A. ana B. , from the hiatoloijy of 

 notochordo ano there ig not t!.c least inaication o '^' supi-ortin:^ 

 tissue. Hov/ever, larvae whicii I have examined fixed in Flem- 

 mint;,*s fluid have not snov.Ti ti:e vacuoles to be filled -with fat 

 droplets as Longchamps states. 



Sections throu^jh the aiverticula o-^ quite ola larvae ("^it;. 

 55) stained with iron haematoxylin sho v/ columnar cells, nearly 

 every one o-^wl;ich contains a deeply staiiiin^^ body about one 

 quarter the size o+" the nucleus. The bodies are liO t found in 

 the wall of the stomach proper ai^a I believe that they t;ivc the 

 yellov/isi. brov.ii color to the diverticula of ti.e live Act ii^ot rocha 



Iri some cases I have founa clu larvae in v.iiich L -.e cells of 

 trie oiverticula were vacuolated taut in these cases I have also 

 found that tJ.e eiitire stomach wall was vacuolated. Tne vacuoleij 

 were nev^'r large enout^h or liumerous Oijout^i; to alter ti»e natural 

 position of tne nuclei. 



Accc-ain}^ to kasterman's dascription, the first vacuoles 

 are formed at the distal ends of the cells ana more vacuoles 

 arise lat-r bctweDn these ana the inner ends of the colls. 



