( xliv ) 



Election of a Fellow. 



Mr. William Bartlett Calvert, of Collegio Ingles, 13 Nataniel, 

 Santiago, Chili, was elected a Fellow. 



Exhibitions, &c. 



Mr. McLachlan exhibited a number of seeds of a Mexican 

 species of Euphorbiacece, popularly known as "jumping seeds," 

 recently received by him from the Royal Horticultural Society. 

 He stated that these are known to be infested with the larvse of 

 a species of Tortricidcs, allied to the apple Tortrix ; they were 

 first noticed by Prof. Westwood at a meeting of the Society held 

 on the 7th June, 1858, and the moths bred therefrom were 

 described by him as Carpocapsa saltitans [cf. Proc. Ent. Soc. 

 2nd series, vol. v. p. 27). These seeds have since from time to 

 time been referred to, both in Europe and America. A dis- 

 cussion ensued, in which Mr. Pascoe, Mr. Poultou, and others 

 took part. 



In connection with the subject of these "jumping seeds," 

 Mr. Roland Trimen called attention to a gall larva, which he 

 he stated was found very numerously on a common shrub {Rhus 

 viminalis) in the vicinity of Cape Town. He said the galls 

 usually occurred singly on the leaves, but sometimes there 

 were more than one on a leaf. On carefully paring off the 

 green substance of the leaf investing the gall, a white inner case 

 or cyst was exposed, elongate-ovate in form, and not unlike the 

 small sugar-plum known as a " caraway comfit." When fully 

 developed, this cyst parted pretty freely from the investing mem- 

 brane of the leaf, and in most cases surprised its liberator by 

 springing obliquely into the air. The substance of the cyst or 

 cocoon was, though thin, tough and like very fine parchment, and 

 the yellowish white larva which it contained was much thicker 

 anteriorly than posteriorly, with the segments generally rather pro- 

 minent, and with blunt tubercles. It appeared to be only the full- 

 grown, or nearly full-grown, larva that had the power of projecting 

 itself and the surrounding cyst into the air; for on opening those 

 cysts which did not jump, Mr. Trinicn said he invariably found 

 the larva to be of small size. The freed cysts jumped to a 

 distance of from four to nine inches, and the action was main- 

 tained for many hours, or even several days, with very brief 



