DIPTERA. 



351 



spoiled, but are found principally on shoots growing as suckers from 

 old stem. (See figs. 325 and 326.) 



Larva yellow-orange colour, 2 mm. long. Head long, thin, and 

 pointed, footless. Has habit of anchoring anal end, raising head, and 

 making a motion or two in the air, then placing head to tail end, thus 

 making body a sort of loop, and then giving a high and clear leap off 

 the table to a distance of two or three inches. Mr Theobald savs : 



Fig. 325. Leaf of lime-tree injured by Cecidomyia 

 tiliam volens. A normal leaf is placed behind 

 the injured leaf for identification. 



Fig. 326. Shoots of lime-tree injured by 

 Cecidomyia tiliam volens. 



" I have found this very harmful on clipped and trimmed limes used 



as ' blinds ' in suburban gardens." 



Diplosis (Clinodiplosis) botularlf, Wtz. 



This species is shown by the photograph (fig. 327). The larvae 

 live in a sort of pea-pod-shaped recess formed by rolling the leaf 

 inwards, and stimulating the growth of the leaf in thickness. The 

 larvae secrete a liquid and, as it were, half swim in it. They are 

 white with a central streak of green in the body. It is said they fall 

 to the earth, pupate, and appear as flies in the following May. I 

 found them very common at Bellingham, in Northumberland, about 



