162 THE CANADIAN ENTOMOLOGIST. 



insect, and it also differs in the form of the larva. Phyllocnistis differs in 

 the form of the larva and of the mine. It pupates in the mine ; the head 

 is smooth, and the anterior wings are caudate. In all of these respects it 

 clearly differs from this insect. The neuration of the anterior wings, how- 

 ever, differs from that of this insect only in having one more marginal 

 nervule given off from the median vein. In Lithocolletis there is one nervule 

 emitted from the tip of the diseal cell, and it passes to the tip of the w r ing. 

 In Leucanthiza there are two : one going to the costa, the other to the hind 

 margin. In this insect there is but one ; but that one is furcate, sending a 

 branch to the inner margin, and one to the tip. In Lcuca?ithiza the sub- 

 costal sends three short veins to the costa. In Lithocolletis it sends but 

 two, and in many species one of them is emitted at the base of the apical 

 nervule, while in others they are both more remote from the apical 

 nervule as they also are in Leucanthiza. In this insect the subcostal 

 sends but two nervulcs to the costa, one of which is emitted at the base of 

 the apical nervule, as in some species of Lithocolletis. In Leucanthiza 

 and in Lithocolletis, so far as I have observed (except in Lithocolletis 

 desmodiella) and in Phyllocnistis, the median vein sends two nervules to 

 the hinder margin, whilst in this insect and in L. desmodiella it sends but 

 one. L. desmodiella also strongly resembles this insect in the pattern of 

 ornamentation ; but it belongs to the division of that genus which has 

 cylindrical larvae. Clemens states that the subcostal vein of the hind wings 

 is simple in Leucanthiza. I have not examined it. He also says that it is 

 simple in Lithocolletis ; but I have found it distinctly furcate in every species 

 that L have examined, and I have examined several. He says that it is 

 furcate in Phyllocnistis. But I have found it simple in P. viiifoliella n. sp. 

 He says that it is furcate in Lyonetia. I have not examined it. In this 

 species it is distinctly furcate, precisely as I have found it in Lithocolletis 

 and as Clemens describes it in Lyonetia. 



This insect, therefore, seems to me to approach more nearly to Litho- 

 colletis both in pattern of colouration and structure, than to any of the 

 above named genera, although it is very near to Leucanthiza, if it does not 

 in fact bridge over the differences between them, and reunite Leuca?ithiza 

 to Lithocolletis — from which Dr. Clemens separated it. The pattern of 

 colouration in the wings of Leucanthiza also differs from this insect, though 

 the shades of the colours, and the disposition of them on the head, thorax, 

 and base of the wings is the same in the only species described by Dr. 

 Clemens, viz. : Leucanthiza Amphicarpeaefoliella. 



This insect, therefore, is properly placed in Lithocolletis, or a new 



