225 



M. listoni 



Ovum. — Upper surface very narrow. Floats 

 do not touch margin of upper surface. Lower 

 surface not ornamented. A small fringe passes 

 ■around margin of upper surface. 



Type 2. M. rossii 



Ovum. — Upper surface broad. Fringe very 

 well developed and striated throughout whole 

 length. Floats scallop-shell shape and touch 

 margin of anterior surface. Lower surface not 

 ornamented. 



Ce. pulcherrtma 



Ovum. — Upper surface broad. Floats touch 

 margin of upper surface. Fringe well developed 

 around margin of upper surface. Striations are 

 not present in that portion of the fringe lying 

 over the floats. Lower surface not ornamented. 



N. jiiliginosus 



Ovum. — Upper surface moderately broad. 

 Floats touch margin of upper surface. Floats 

 long and narrow. Fringe around upper surface 

 only indicated by white border. Lower surface 

 not ornamented. 



N. maculipalpis 



Ovum. — The upper surface is rather narrow. 

 The floats are rather short and oval, and are 

 placed far forwards as in the ovum of N. stephensi, 

 though less markedly so. The fringe is fairly 

 developed, but is not continued over the floats. 



