THE ENTOMOLOGIST. 271 



would appear by the middle of June, and the third in 

 August. I do not even see why there should not be four 

 geueralions, although I aduiit there is little chance of it in 

 our climate. 



In conclusion, I must remark that Ratzeburg has made a 

 slip of the pen in stating that the " black-gray smoky wings 

 are lightest at the base and darkest at the apex:" it must 

 evidently be just the reverse. It is, moreover, somewhat 

 singular that, having reared the insect, he makes no mention 

 of the male. Can it be that my having reared a brood of 

 males is to be regarded as a rare occurrence? It is well 

 known that in the case of the sawflies the females occur in 

 much preponderating numbers ; even in some not rare species 

 the males are to this moment quite unknown. 



Neiherland Insects. Translated from the Dutch of Christian 

 Sepp by Edwin Birchall, Esq. 



(Continued from p. 154.) 



"De Kleine Gestreepte Witjes-vlinder." 



The small, striped, white butterfly (Pieris Napi). 



Having now before me the task of describing a butterfly of 

 the second order, it seems to me best to state something 

 beforehand about the character of these insects. In the first 

 section, about the butterflies of the first order, I named the 

 common character, which all butterflies have in caterpillar 

 and pupa, both in the first and second orders; consequently 

 it is unnecessary to repeat this in the present chapter; but, 

 as I then gave the peculiar character of caterpillar, pupa, and 

 fly, of the first order, so now 1 give herewith the character of 

 caterpillar, pupa, and fly, of the second order: — 



(1) The eggs, out of which these insects take their begin- 

 ning, have not all the same form : some are longish, and 

 pointed at the upper end, others round; and of these some 

 are round like a ball, others round like a plate, some smooth, 

 and others rough ; in colour they incline to white and 

 yellowish chiefly. 



(2) The caterpillars of this order have no spikes, but 

 mostly very fine, short hairs. 



