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sect, and illustrates them by an extensive scries of drawings, which 

 were exhibited ; as were also siiecimens of the Insect itself. 



Mr. Curtis also communicated a Paper " On a species of Moth 

 found inhabiting the Galls of a Plant, near Monte Video." The galls 

 in question were collected by Mr. Earle (who accompanied Captain 

 Fitzroy in H. M. S. Beagle,) in the month of December, about fif- 

 teen miles westward of the town, on a sort of underwood shrub, 

 which Mr. David Don, on the examination of the small branches, 

 and of a single leaf, thinks may probably be a species of Celastrus. 

 Of the figures in illustration of the paper exhibited to the Meeting, 

 one represents a branch supporting two of the galls, which are some- 

 times clustered five or six together. They arise where the attach- 

 ment of leaves or flowers is indicated, and are therefore most proba- 

 bly produced by the transformation of the buds themselves, acted 6n 

 by the stimulus of the insect secretions. On the side of each gall is 

 a round aperture, with an operculum accuratelj^ fitted to it, which may 

 easily be picked out with the point of a penknife. This operculum 

 is equally convex on its outer surface with the rest of the gall, and 

 is of the same thickness ; but its internal diameter is less than that of 

 its external surface, which forms a broader rim. Around the orifice 

 the margin of the gall is thickened and a little raised. Within each 

 of the entire galls was found a pupa attached to the base by its tail, 

 with its head close to the operculum ; which, it should seem, gives 

 way by a slight expansion or elongation of tXiepupa when just ready 

 to hatch, and the cast skin is left sticking in the passage. 



Mr. Curtis observes that he was very much surprised to find on exa- 

 mination that the pupce contained in these galls belonged not to the 

 Hymenoptera but to the Lepidopterous order ; an occurrence hitherto 

 almost unprecedented. The characters of the Insect, as far as could 

 be detected from the imperfect state in which it was found, are as 

 follows : 



Cecidoses. 



Caput parvum. 



Antenna corpus longitudine sequantes, graciles, ciliatse, articulis 

 elongatis numerosis : in capitis vertice prope oculos insertae. 



Thorax squamulis depressis vestitus. 



Abdomen subrobustum, ovato-conicum. 



Pedes longi ; tihiis anticis spina prope apicem munitis, intermediis 

 posticisque ad apicem calcaratis, his dense squamulatis et in medio 

 praeterea bi-spinosis ; tarsis 5-articulatis, articulo basali longissimo ; 

 unguibus pulvillisque minutis. 



Ala sublanceolatse. 



Cecidoses Eremita. Cec. cinereus ; alls anticis saturate brunneo 



maculatis, dense ciliatis; posticis albidis. 

 Hab. prope Monte Video. Pupa in gallis Celastri ? abscondita. 



From the stoutness of the body Mr. Curtis is inclined to refer the 



