of the Genus Lithocolletis. civ 



interrupt it. The entire larva is from 2 to 2^ lines long, shining, 

 and clothed with very fine hairs. The mined abode in apple- 

 leaves is often near the margin, often at the midrib, and then placed 

 between two veins. The lower skin of the leaf is curved and laid in 

 several folds. The larva collects its excrement into a heap in a cor- 

 ner. The pupa reposes in a light irregular cocoon. 



The perfect insects, as already mentioned, differ only in the ground 

 colour, since the whitethorn miner is far darker than Pomifoliella. On 

 this character no specific difference can be grounded. 



Note 2. — A species which Professor Ratzeburg bred by hundreds 

 from mountain ash (Sorbus Aucuparia), at Neustadt-Eberswald, and 

 of which I have only met with two specimens here, should, if the spe- 

 cies were new, be placed after this. Have we probably found out the 

 Elachista (Tinea) cydoniella, Dup., Fabr., which Zeller in his Mono- 

 graph quotes to Pomifoliella with (??) ? The coming season will 

 prove it. 



Note 3. — In the ' Bidrag till Finland's Fj aril- Fauna af Tengstrom,' 

 p. 153, Pomonella, Zell. (Blancardella, F. Zett. ??), is given as a fre- 

 quenter of Prunus Padus, and also of Sorbus Aucuparia. I suspect 

 that some error lies at the bottom of this, since probably the species 

 found on Prunus Padus is Pomifoliella, and that on Sorbus Aucuparia 

 is also not Pomonella, but the still uncertain species mentioned in 

 Note 2. 



7. L. pomonella, Zell., is with us far commoner than Pomifoliella ; 

 we find this species always certainly on the beech, whether that upon 

 the hornbeam be not another species, appears to me doubtful.* L. 

 pomonella is common wherever the beech occurs, in hedges and in 

 our woods, where the spring brood is often met with in swarms. One 

 collects the pupae best from the middle to the end of October, it is also 

 still practicable in the early spring. The moth appears both in the 

 room and in the open air, considerably later than Pomifoliella. In 

 the room I first obtained it on the 11th of March. Its period of flight 

 is May, (on the 13th of May, 1849, by thousands at Hokendorf). 



8. L. ulmifoliella, Hubn. Abundant on birches everywhere around 

 Stettin. They first assume the pupa state about the middle of Octo- 

 ber ; in the warm room the moths come out from the middle of De- 

 cember to February. A second, but less abundant brood, occurs in 

 the larva state at the beginning of July. The larva not unfrequently 

 chooses the point of a birch-leaf for its abode ; the greenish white 



* Von Nicelli has evidently here mixed Faginella and Carpinicolella together as 

 Pomonella : see my remarks at the end. — H. T. S. 



