is::..] 270 



Arrented development in Timarcha coriaria and Lagria hirta. — The following 

 instances of arrested development, causing a want of symmetry in the legs of insects, 

 arc interesting, and seem to me to be -worth publishing, inasmuch as, so far as I know, 

 no similar instances have been recorded. In a $ specimen of Timarcha coriaria, 

 taken last autumn in Switzerland, this want of development occurs in the right 

 middle leg, all the others being of normal size. The following are the dimensions of 

 the stunted right leg, and its normal fellow on the left side : — Femur, L., 3 milli- 

 metres, R., very slightly shorter ; tibia, L., 3 mill., R., 1'75 mill. ; tarsi, L., 2 

 mill., R., 1 mill. : the claws being exceedingly minute and barely projecting beyond 

 the last tarsal joint, all of which are present and equally developed, though not 

 attaining the normal size. 



In a specimen of Lagria Jiirta, the dwarfing occurs in the posterior pair of legs, 

 and in this case again the right leg is the stunted member. The measurements of 

 this specimen are: — Femur, about 2 mill, in both legs; tibia, L., 2 mill., R., 1.75 

 mill. ; tarsi, L., I'oO mill, (last joint wanting), R., 1 mill. 



In both cases the want of symmetry caused by the arrested growth is more con- 

 sijicuous than would appear from the above figures. — W. A. Forbes, 35, S. Castlo 

 Street, Edinburgh : March 2\st, 1875. 



On xome European ' Micros ' aivag from home. — Among the species described by 



the lato Dr. B. Clemens, Mr. Stainton recognises many European species, as shown 



in his valuable re-publication of Ur. Clemens' papers. 



y Prof. Frey, of Zurich, has recently described a few American species from the 



V^i vicinity of Cambridge, Massachusetts, and among them recognises LilhocoUelis 



\ trifasciella, var. ? Haw. I have never met with this, nor indeed any ' Micro ' mining 



honeysuckle leaves, but I learn from Prof. C. V. Riley that he has met with a species 



(probably L. trifasciella) mining them at Chicago. It has probably not extended 



its migrations southward since its arrival in this country. 



Among the species new to this country which have come under my observation 

 (some 3U0 in number), many, no doubt, will prove to have been previously known 

 in Europe. 



Among them I recognise Endrosis fenesirella from California, Tinea tapelzella 

 from Canada, and T. pellionella from Canada and Kentucky ; and the beautiful 

 Argyre-ilhia Ooedartella from Canada. It is a little singular, that the greater number 

 of European species heretofore found in this country are found as yet only in Canada 

 and the more Northern Slates. On the other hand, some genera found in Europe, 

 e.g. Cleodora, have not been found in this country north of Texas. But the 

 particular species to which I wish to draw attention, is the well-knovra and 

 pretty little Gelechia Hermannella, and a singular (climatic ?) variety of it. So far 

 as I can learn, no variety of this species has yet been found in Europe, though the 

 species occurs from Lapland to Naples. 



Some tliree years ago, I found the larvoj mining leaves of Chenopodium on tlio 

 sliore of Lake Michigan, lat. 43 deg. N. ; and from them I bred several specimens, 

 differing in no essential particular from the figure in Nat. His. Tin., Vol. ix, plate 8. 

 Afterwards, I often found them mining the same leaves in Northern Kentucky, lat. 38 

 deg. (nearly) ; but, as I had as many specimens as I then wanted, and never thought 

 of a variety, I did not attempt to breed thein until the summer of 1871- The larva 



