THE YOUNG NATURALIST. 



139 



hawthorn hedge, we may find H. plumbetta and H. evonymella among spindle. 

 The first-named has four rows of black dots arranged longitudinally, the 

 second has three rows ; both have white fore- wings. The little black and 

 white Prays Curtisella occurs among ash. In the Plutellida the head is 

 rough and the labial palpi has a projecting tuft of scales beneath the second 

 joint. Plutella porrectella, the larvse of which feeds on dame's-violet, may 

 be taken as an example of this family ; the moth has whitish fore-wings 

 streaked with ochreous, and a fuscous-coloured hind margin spotted with 

 black. 



I am unable this month from want of space to give further descriptions, 

 but I will just conclude with a list of a few species I take or look out for in 

 July: Cerostoma sequella, among sallows; C. vittella, on elm; Harpipteryx 

 harpetta, among honeysuckle ; Orthotcelia sparganella, about bur-reed ; 

 Phibalocera quercella, about oak, apple, and hawthorn ; Bepressaria costosella, 

 about furze bushes ; If. liturella, on knapweed ; D. conterminella, in osier 

 beds ; D. angelicella, among angelica ; D. ocellella, larva on sallows ; D. 

 applanella, beaten from thatch, larvse in folded umbelliferous leaves ; D. albi- 

 pmctella occurs sometimes among thatch, but is rare about Cambridge ; J), 

 charophyllivorella, larva occasionally in umbels of Charophyllum temulentum ; 

 D. nervasella larvae in umbels of (Enanthe crocata ; Glyphipteryx thrasonella 3 

 among rushes. These are only a small portion of the tineina I observe in 

 July, but it is impossible to give anything like a complete list in a magazine 

 article. 



Mill Road, Cambridge. 



THE ORGIN OF APTEROUS FEMALES. 



By JOHN E. ROBSON. 



This subject, introduced by Mr. Anderson, is a most interesting one and 

 worthy of more attention than it has received. Perhaps the difficulties of 

 such problems deter many from entering upon their discussion, few caring to 

 express opinions that may be very far from the truth. But it is surely 

 better to begin in error and work out a true theory, than never to discuss a 

 subject lest one's blunders are ridiculous, or ignorance very gross. 1 have 

 often regretted that Lepidopterists as a rule were less scientific than Cole- 

 opterists. Lepidopterists can name their captures, that end of a young 

 collector's ambition, by a careful examination of the wing markings. Cole- 

 opterists must know something about structure before they can accomplish 

 . this. Students of Lepidoptera must study details, but collectors need not 



