178 



Heredity. 



of marine invertebrates, and has very limited powers of 

 locomotion, hardly differs from the non-parasitic Cyclops 

 (Fig. 9), except that two of the body segments are 

 modified to form a chamber in which the eggs undergo 

 their development. The male (Fig. 11) is somewhat 



FIG. 11. Male specimen of the 

 same species. 



Fro. 



12. Female specimen of 

 Lernentoma corunta. 



smaller than the female, but bears a close resembance 

 to her, and to ordinary copepods. 



The female Lernentoma (Fig. 12) is very different 

 from the male (Fig. 13), and both depart very greatly 

 from the typical copepod structure, although a slight 

 resemblance can be traced between the female and cy- 

 clops. The female is very much larger than the ordi- 



