Zoological Society. 225 



bly produced by the transformation of the buds themselves, acted on 

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

 a round aperture, with an operculum accurately 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 the pupa 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 pupa 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 insert*. 



Thorax squamulis depressis vestitus. 



Abdomen subrobustum, ovato-conicum. 



Pedes longi ; tibiis anticis spina prope apicem munitis, intermediis 

 posticisque ad apicem calcaratis, his dense squamulatis et in medio 

 praeterea bi-spinosis ; tarsi* 5-articulatis, articulo basali longissimo ; 

 unguibus pulvillis(\ue minutis. 



Ala sublanceolatae. 



Cecidoses Eremita. Cec. cinereus ; alis 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 

 Moth to the Tortricida ; if belonging to Pyralida or Crambida, its 

 palpi should be more strongly developed, but neither they nor the 

 maxilla were discoverable. 



Figures of the imperfectly developed moth and of several of its 

 parts, as well as of the galls and their opercula, together with spe- 

 cimens of the latter, were exhibited in illustration of the paper. 



February 24. — A Letter was read from Lady Rolle, addressed to 

 the Secretary, giving an account of the birth of two young Monkeys, 

 the produce of a pair of Ouistitis (Jacchus penicillatus, Geoff.) in her 

 Ladyship's possession. The parents were obtained in London during 

 the last summer, and the young were produced on the 1st of January : 

 one was born dead, but the other still survives, being about six weeks 

 old. It appears likely to live, and is every day put on the table 

 at the dessert, and fed upon sweet cake. Lady Rolle states that the 

 mother takes great care of it, exactly in the manner described by 

 Edwards in his ■ Gleanings', p. 151, pi. 218; where the animal is 

 figured and described under the name of the Sanglin. 



Third Series. Vol. 7. No. 39. Sept. 1835. 2 G 



