204 



Prof. Frey, and some American Teneina. 



inspection of the plates in Nat. Hi.-^. Tin., I suspect, however, that Mr. 

 Stainton may be in ei-ror about this. I have made these remarks to 

 illustrate the difference between the two forms of mine and miner, 

 which are common in the United States, and only add the fact that, so 

 far as I have observed, all the larva) of white species of Llthocolletis, 

 as e. g., L. argent ifimhriella, Clem., L. Clemcmella, Cham., and the 

 European L. Heegeriella, and L. Cramerella, have cylindrical larvi€, 

 whilst perhaps most — not all by any means — of the darker colored 

 species are of the flat group. This, however, by the way. I now pro- 

 ceed to notice the differences between Argendnotella and Ulmella, 

 which Prof. Frey unites without examination : 



L. Argentinotella, Clem., 



Has the mine tentiform, and nearly always 



on the under side of the leaf. 

 The larva is cylindrical. 



L. Ulmella, Cham., 



Has the mine Hat, and always on the upper 

 side of the leaf. 



The larva is flat. 



As to the description of the imago, I notice only the points named 

 in the respective descriptions by Dr. Clemens and myself, as the Pro- 

 fessor had no other xcay of learning the differences betiveen the species, except 

 from these descriptions. He never saw L. ulmella. 



Antense, silvery. 

 Front and tuft, silvery. 



Thorax, pale reddish saffron ; wings of same 

 hue, with a rather short, unnxirtjined, silvery 

 basal streak. (The basal streak is in the 

 middle of the wing). 



Wings with firp. costal streaks and four dorsal 

 streaks of the same hue. The tirst costal 

 and dorsal streaks are unmargined; the 

 first dorsal being near the inner angle of 

 the base, tapering to a point in the middle 

 i)f the wing, from a very broad base; the 

 first costal streak, rather slender, and only 

 halt as long as the fiist dorsal. The second 

 costal and dorsal connected about the mid- 

 dle of the wing, and dark margined toward 

 the base, by a line much curved in the 

 middle. Third costal and third dorsal op- 

 posite, and each dark margined internally. 

 The fourth dorsal about midwas' between 

 the foarth arid fifth ccv^a? streaks; sometimes 

 the fourth dorsal and costal streaks witli a 

 few internal scales, sometimes unmarginal. 



At the ajiex is a small scattered patch of 

 black scales. 



Antense, silvery white; the apical two thirds 

 annulate with brownish. 



Face and palp, silvery white; the tuft inter- 

 mixed with golden. Legs and under sur- 

 face silvery white. 



Anterior wings bright golden, inclining to 

 orange, with a white streak alonrj the dorsal 

 margin, f rum the base, to the cilia, where it is 

 deflexed, and parses oti to the dusted portioix 

 of the a.pe.r, which <s ?iaar the pasterior margin , 

 and is dark brown or a white ground. 



Three small costal silvery streaks; the fir^t 

 and second beinj; near the middle of the 

 costal margin; the second one is tlie 

 largest, and the third is small and near the 

 apex. There is some variation in the size 

 of costal streaks, and in the extent of the 

 apical dusting, and sometimes the costal 

 streaks are faintly dark mai'gined. ( The 

 description does not mention dorsal streaks, 

 because there are none.) 



Apex dusted dark brown on a white ground. 



Now, how Prof. Frey, on these two descriptions, and with a specimen 

 oi Argentinotella before him, but none of ulmella, that being his only 

 means of comparing the species, could conceive them to be the same, we 

 can not conceive. But it Avas worse even than this, though this shows 



