Insects. 123 



strongly indented; the outer dilation in the form of a long trian- 

 gle, with the outer margin entire and inner very slightly dentate. 

 Length 2 inches 6 lines, breadth 11 lines. 

 Female : abdomen narrow at its base and gradually increasing to 

 the middle of the third segment, the fourth rather wider, and 

 then gradually decreasing to the seventh, which is suddenly 

 rounded towards the eighth, and then sloping to the tip. Fe- 

 mora of the fore legs dilated ; the inner dilation moderate, much 

 indeaited, with its extremity irregularly dentated ; the outer di- 

 lation large, with the outer margin rounded and entire, and the 

 inner margin and apex widely serrated, (see fig. ^). Length 3 

 inches 8 lines, breadth 1 inch 9 lines. Phy Ilium pulchrifolmm, 

 Dehaan, Verd. over de Nat. Gesch. Ins. pi. xv. f 6. 

 Inhabits Sylhet. In the cabinet of the Rev. F. W. Hope. 



G. R. Gray. 



Note on the occurrence of the Locust near Derby. August 27th, 

 1842, in a cornfield close to my house was captured Locusta Christii 

 (male), which I kept alive for a month, and it is now in my cabinet. — 

 Robert John Bell, Surgeon ; Mickleover-house, near Derby, January 

 19, 1843. 



Note on Heliothrips Adonidum'. Last autumn I observed this in- 

 sect in great abundance in Mr. Loddiges' stove houses. It did much 

 mischief to his plants during the preceding summer. — Francis Wal- 

 ker, Southgate, February, 1843. 



Note on Aphides, and on the Larva of a Fly which destroys them.^ 

 During the last summer and autumn the northern part of the county 

 of Northumberland was infested with the Aphis in such immense quan- 

 tities, that the farmers of that district sustained very considerable da- 

 mage in consequence. The parent fly of this insect was black, with 

 very long transparent wings, like the green blight so often seen upon 

 rose-trees. The offspring of these flies were without wings, green, 

 brown, red and yellowish, apparently adopting the colour of the leaf 

 of the plant they were upon. These insects brought forth their young 

 alive, and these young Aphides commenced their work of destruction 

 the moment they were produced. The plant chiefly attacked by them 

 was the turnip ; though the Swedes did not suffer so much as the kinds 

 sown later, probably from these two reasons : — 1 . The Swedes being 



* Communicated liy Mrs. Griffiths, of Tor(iuay. 



