2o6 British Dragoiiflies. 



Egg- 

 Length about r5mm., breadth about ^mm. Shape 

 cyHndrical, rounded at one end, pointed at the other. 

 Colour yellowish. Contents granular or in oil-like 

 globules. [Extracted from the body of a dead female 

 caught in Richmond Park, September ii, 1898.] 



Nymph. 



Body without hairs, but graiiulated, elongated, 

 constricted to a considerable extent behind thorax ; 

 colour dark chestnut-brown ; length 40mm., breadth 

 8'5mm. Head rather flat, pentagonal, 9mm. wide. 

 Vertex a little raised. Antenna seven-jointed, two basal 

 joints short and swollen, five distal ones slender ; third 

 long, fourth short, rest about equal, seventh pointed. 

 Mask at hinge about half width of front border ; middle 

 lobe cleft, and produced very little in a very obtuse 

 angle ; palpi cut straight at ends ; movable hooks sharp 

 and slender. Eyes rather large, situated at fore corners 

 of head, somewhat spherical, with a prolongation backward 

 toward the middle line of head. Occiput fairly broad ; 

 curved line separating it from eyes, lateral margin 

 sloping backwards, hind margin straight, median line but 

 little raised, pale, on each side of it a smooth patch. 

 ProtJiorax in centre, about as wide as middle of occiput, 

 with a raised front margin ; almost pointed in the 

 middle of the hind margin ; sides pale. Leg-base- 

 processes rough, sharp-pointed, about equal, enclosing an 

 acute angle, but not much less than a right angle ; tip 

 of anterior process turned outward a little. (Eig. 19, 

 No. 6). Meso-thoracic spiracles exposed. Legs rather 

 stout, fairly long ; first pair about 14mm. in length, mid- 



