I90i] 



ENTOMOLOGICAL NEWS. 



305 



Thyridopteryx ephmeraformis. The count exceeded the expec- 

 tations of myself, for I have seen stated by entomologists that 

 on an average the eggs were between four and five hundred ; 

 but if twentj' cocoons are enough to obtain an average from, 

 the number will be between nine and ten hundred. Only two 

 counts were below five hundred, nine being in the thousands, 

 and the rest in the range of seven to nine hundred. The fol- 

 lowing is an extract from my note book : 



Variation in the Venation of Amalopis inconstans 

 Osten Sacken. 

 By C. W. Johnson. 

 The variation in the venation of this species is very remark- 

 able. Variations here exist which, if constant, would consti- 

 tute excellent generic characters ; but there are apparently all 

 gradations between the two extremes. From the typical form 

 (fig. 2) there is a tendency on the one hand for the number of 

 cross- veins to diminish, and on the other hand to greatly 



