PLATE XL 



Upper figure : longitudinal section of Euphaiisia vallentini Stebbing with 

 two specimens of Amallocystis fagei Boschma from St. WS 770. 

 X 61. 



Lower figure: Part of next section of the same specimen. 

 X525. c, cuticle of host; e f, external part of organ of fixation; 

 /, organ of fixation; g, gonomere; h, hepatopancreas of host; ht, 

 heart of host ; m, musculature of host ; o, ovary of host ; p, proto- 

 plasmatic excrescences ; s, sieve plate ; si, stomach of host ; t, tropho- 

 mere. 



