44 



SUMMARY OF CUKRENT RESEARCHES RELATING TO 



whicli is physical). There are usually two kinds of corpuscles in the 

 colourless blood — so-called " heemocratera " and leucocytes. The larvee, 



ho 



fl 



r '-- 



-k- 



...f 



Fj 



I 



Pi — 



p6 - 





, ( 



PI 



Nervous system of very young larva of PJioxichilidium ; 

 h.g., cerebral ganglion ; p 1-p 7, appendages ; 2-9, ganglia. 









.A 



^ 



1 A 



a — 

 9 '~ 



Nervous system of fuU- 

 growu larva. 







, <+ -" 



:^ 



■^*> 



i3'9 



r/ 



t-O 



Nervous system of adult male ; 

 CO., commissure. 



like the adults, are keen parasites on hydroids and the like, using their 

 proboscis in ingestion. A description is given of ovary, nervous system, 

 and larval appendages. Marked shortening of the trunk of the body is 



