228 Teneina of the United States. 



which is no doubt a new species. But Prof. Frey is, I am satisfied, in 

 error when he says that it is a leaf-miner of the locust. Four insects 

 are known to mine locust leaves in this country. They are Lithocol- 

 letis robiniella, Clem., L. ornatella, Cham., Paredopa robiniella., Clem., 

 and the beetle Hispa Suturalis, Say. They are all abundant where- 

 ever I have sought for them, and in this locality they are seriously 

 damaging the locust trees. Owing to their ravages (mainly however, 

 to the beetle which feeds on the leaves, both in the condition of larva 

 and imago), locust groves by midsummer, look parched and dry as if a 

 fire had swept over them. Only the three above mentioned lepidopterous 

 mines are known on these trees. So Prof. Frey found only the same 

 three in his leaves ; and he bred L. ornatella and L. robiniella, from 

 two of them. Why should he not have bred the third, P. robiniella t 

 he did no doubt, and he has described it well as G. mirabilis, but not 

 at all in his account of L. gemmea. He thus describes the three 

 mines Avhich he found in locust leaves : " A common lAthocolletis dwell- 

 ing, with smooth border in which the larva is transformed," and in 

 which we recognize the mine of L. robinieUa, Clem.; also "an upper 

 and under side mine of rounded not much serrated shape " and which 

 Ls certainly that of L. ornatella ; and also a " digitated upper side 

 mine, " which, omitting color, is as acurate a description of the mine of 

 P. robiniella, as could be given. Now, as there is no doubt about any 

 of these mines nor in this country, as to the insects which make them ; 

 and no other locust leaf miners have ever been heard of; as Prof. 

 Frey had L. robiniella. ; and its mine ; and L. ornatella and its mine ; 

 and had the mine of P. robiniella ; and as G. mirabilis is a good de- 

 scription of P. robinieUa, an L. gemmea is no description of it at all ; 

 then considering the mixed nature of the collection of leaves, it is a 

 safe conclusion that L. gemmea, was not bred from mines in locust leaves. 

 I proceed to show Avherein L. gemmea, Frey, differs from P. robiniella, 

 Clem. The tuft of the vertex in L. gemmea, is said, by Prof. Frey, to be 

 more developed than in L. ornatella ; in P. robiniella, in perfectly fresh 

 specimens, it is as smooth as in a Phyllocnistis. In older specimens and 

 those which have got their scales rumpled more or less, the scales of 

 the vertex become roughened so that Dr. Clemens, described it as 

 tufted. In L. gemmea " the forewings are bright saffi'on" but (com- 

 pared with ornatella), "the darkening at the base is wanting;" in P. rob- 

 iniella, the wings are dark brown, P. robiniella has no massing of gold 

 scales on the fold, nor any "pale golden band straight and inwardly dark 

 margined near the basal third of the wing, " nor any band at all ex- 

 cept the costal streaks crossing the apical part of the wing as in G. 

 mirabilis. In short the description of L. gemmea, does not correspond 



