77 



definite, though it says " they (the worms) go iuto the molting stage and re-appear 

 again the same season, or produce two crops in the same season similar to the cotton- 

 seed boll-worm of the South, which produces three crops in one season." A definite 

 answer as to their origin and history will be thankfully received by myself and others. 

 —[I. M. Miller, Upland, lud., July 16, 1889. 



STEPS TOWARDS A REVISION OF CHAMBERS' INDEX, WITH NOTES 

 AND DESCRIPTIONS OF NEW SPECIES. 



By Lord Walsingham. 



[Continued from page 54 of Vol. //.] 



Lithocolletis alnifoliella Hb. 



Chamb. Bull. U. S. G. G. Surv., IV, 121 (1878). 



Pack. U. S. Dept. Intr., Eut. Com. Bull. VII, 140 (1881). 



This species was not included in the Index by Chambers, but in the List of Food- 

 plants of Tineina (which was quoted by Packard in his List of Insects Injurious to 

 Forest and Shade Trees) it is referred to as making a tentiform mine on the under 

 side of the leaves of alder. For the present, at least, there is no evidence to justify 

 its inclusion in the North American fauna. 



Lithocolletis quercipulchella. 



Chamb. Bull. U. S. G. G. Surv., IV, 120 (1878). 



Pack. U. S. Dept. Intr., Ent. Com. Bull. VII, 53 (1881). 



Packard is again only quoting from Chambers' List of Food-plants, where this 

 species is referred to as feeding on the under side of oak-leaves. Chambers was ac- 

 quainted with the larva of qiiercibella, which has a similar habit, but he omits this 

 insect from his list of larvie. In the Index he makes no reference to quercipulchella. 

 There is, I think, no doubt that quercipulchella is a manuscript name for the species 

 which he described as quercibella. 



Lithocolletis lysimachiaeella. 



Chamb. Cin. Qr. Jr. Sc. II, 100 (1875): Bull. U. S. G. G. Surv. IV, 116, 154. (1878). 



This name was given to a larva mining Lysimachia lannelata, but until the perfect 

 insect has been reared I can not feel justified in including it as a species in the re- 

 vised Index. 



The practice of publishing names for insects which are known only in the larval 

 state is much to be deprecated. The following facts speak for themselves and will 

 explain why these references will not be given in the revised Index. 



Coleoptera. 



Gn. ? sp. ? mining Quercus alba. Chamb. Can. Ent. IV, 123-4 (1872). 



= Lithocolletis iubiferella. Chamb. Can. Ent. Ill, 165-6 (1871) : IV, 123-4 (1872). 

 Gn.? sp. ? mining Quercus ilicifolia? Chamb. Can. Eut. IV, 124 (1872). 



— Lithocolletis sp.? Chamb. Can. Ent. Ill, 166 (1871): IV, 124 (1872). 

 Gn. ? sp. ? mining leaves of " Willow Oaks." Chamb. Can. Ent. (1872) : IV, 124 (1872). 



=^ Lithocolletis sp. ? Chamb. Can. Ent. Ill, 166 (1871) : IV, 124 (1872). 

 Brachys ceruginosa Say. Mining Fagus ferruginea. Chamb. Can. Ent. IV, 124 (1872). 



= Lithocolletis sp. ? Chamb. Can. Ent. Ill, 166 (1871) : IV, 124 (1872). 



