1862.] IBf) 



I'/iz/f/ornistis ill its liabitvS. 



The mine to which I refer may be found during the latter part of Au- 

 gust in the leaves of wild grape-vines. It is very long, winding, linear 

 and UAvrovfjJillejl with hfackish frass and hence easily seen, diifering thus 

 from a Phyllocnistis mine, which resembles the tracings left on leaves by 

 snails. When the larva is full fed, it enlarges the mines at its extremity, 

 without making the enlargement transparent, and making a fold in the 

 leaf at this point, weaves its cocoon and undergoes its transformation in 

 the mine like a Phyllocnistis larva. The larva is pale greenish, immacu- 

 late, lrm(/ and very dendcr, in'fh the anal segments^ very pointed. 



Since writing the preceding remarks on the larva that makes the black- 

 ish mine in wild grape leaves, and which I suspected might be a Lyonetia , 

 I examined one of the pupa I had obtained from the miner. This al- 

 though dead, had completed its full development and the markings on the 

 wing, extracted from its wing-case, were beautifully distinct. The imago 

 was certainly not L. specidella. In its unexpanded state, a wing is quite 

 opaque and the neuration very indistinct and I judge that the chitinic 

 matter of the veins is not secreted until after the escape of the imago 

 from the pupa-case. The neuration of the insect under consideration, was 

 that of P/tyllocnisfis and so also was the ornamentation of the wing, and 

 it appeared to me to be distinct from that of P. vitiyenella, although very 

 similar to it. 



TENAGA. new gen. 



Hind wings lanceolate. Without discoidal cell. The costal vein is de- 

 livered to the costa about its apical third. The subcostal simple, almost 

 or quite obsolete from the middle to the base of the wing. The discal 

 vein is central, much attenuated through the middle of the wing, giving 

 rise to a branch to the inner margin about the middle of the wing, the 

 base of which is extremely attenuated, becoming furcate about the apical 

 third, delivering both branches to the inner margin beneath the tip. The 

 median vein is 2-branched, the superior one, angulated in the middle. 



Fore wings ovate-lanceolate. Discoidal cell very narrow and placed 

 rather beneath the middle of the wing. The subcostal vein is rather in- 

 distinct, sending ofi' a costal branch from the basal third, and near the end 

 of the cell two costal branches, thf second one of wliieh, is furcate and 

 iiuicli att<unaf< il from the hi/nrcafion to its origin. Near this last branch 

 arises another furrati hraurji. much att< n^iotcd tmrocds its /tasr. h)otli of 

 whose branches are delivered to the inner margin beneath the tip of the 

 wing. The median vein is ;')-branched. The subniedian simple. 



