of the Genus Lithocolletis. clxix 



3. Von Nicelli states that he obtains L. pomifoliella from Prunns 

 communis, and all kinds of orchard-trees. Now here I obtain Pomi- 

 foliella principally from whitethorn : early in October the leaves at- 

 tacked by the larvae being as numerous as those exempt from their 

 attacks. I have occasionally found it on the wild apple (Pyrus Ma- 

 ins), but I cannot by any means say that it does not frequent our 

 orchard-trees, since I have not yet looked on them for it. This inves- 

 tigation will probably take place this autumn. 



4. Of the species which should frequent the mountain -ash, I have 

 no further information. The pupae of a Lithocolletis were discovered 

 by Mr. Douglas, in August, near Mickleham, on the white-beam tree 

 (Pyrus (Sorbus) Aria), but the perfect insects so anxiously expected 

 have not yet made their appearance. Pupae found at the same time 

 on Viburnum Lantana, have produced L. elatella, Z., Sta. 



5. L. pomonella, Z. The question now arises, What is pomonella? 

 On what does it feed ? Von Nicelli says that it frequents the beech ; 

 but is doubtful whether those that occur on the hornbeam are the same 

 species. Now the species that frequents the hornbeam here, dif- 

 fers so very much from our beech-feeder, that there does indeed arise 

 a question whether the Pomeranian hornbeam species is the same as 

 our hornbeam species, Carpinicolella. If not Carpinicolella, it may 

 be some other species more allied to Pomonella. In the second 

 place, Von Nicelli's beech-feeder is doubtless Faginella ; so that Po- 

 monella is thus eliminated from his list altogether. Is then Pomonella 

 a myth? That is, have species after species (Salicicolella, Faginella, 

 and Carpinicolella) been removed from it until there is no residuum ? 

 By no means : a residuum is still left, which is perhaps again resolv- 

 able into two species. Both these residual species frequent the sloe 

 (Prunns spinosa), one in May, the other in July and August, which 

 renders it not improbable that they may be merely the two broods of 

 one species, Von Nicelli having observed that the spring and summer 

 specimens of L. connexella show considerable differences. For the 

 May species, should it prove distinct, I would propose the name De- 

 flexella, from the almost constant deflexion of the basal streak into 

 the first dorsal streak. The July species, which appears to have been 

 sent by Herr Mann to Zeller, under the name of Spinicolella,* re- 

 maining as the then sole form of Pomonella. The following brief 

 descriptions of these Pomonelliform species, will perhaps be of some 

 service in calling attention to the essential characteristics. 



* ' Linnaea Entomologica,' vol. i. p. 203. 



