EFFECTS OF PARASITES. 



447 



gastridae and Mysidae.* The young, in these cases, leave the 

 brood pouch in a form identical, or nearly so, with that of the 



FIG. 281. The effects of parasitism on Inachvs. a normal adult female, natural size ; 

 b ventral view of abdomen x 2 ; c normal " high " male, natural size ; d ventral view 

 of adult infected female x 2 ; e infected male, modified into hermaphrodite form, natural 

 size ;i,g,h abdomina of infected males x 2, showing degrees of approximation to the female 

 condition (h the abdomen of the specimen e) (after G. Smith). 



parent, although in several groups (Leptostraca, Mysidae, 



* These Malacostraca are united by Caiman in the group Peracarida, 

 cf. p. 453 et. seq. 



