256 British Dragonflies. 



the leaf— a method of ovipositing which the ovipositor 

 of the Agricviidcc seems well calculated to enable the 

 insect to perform. In 1868, Mr. R. McLachlan found it 

 ovipositing in the mud of a nearly dry ditch in the New 

 Forest. 



Egg- 

 Somewhat cylindrical, but thicker near one extremity, 

 which tapers to a point, the other extremity being 

 rounded. The contents have a granular appearance, and 

 the Qgg is colourless and semi-transparent, in length 

 about I mm., and in greatest breadth about •25mm. It 

 resembles Nos. 6 and 7 of \''\g. 4, p. 16, 



Nymph (Fig. 47). 

 In sJiapc long and slender, though less so than some 

 others of the Agrioi/idcc ; length, including the caudal 

 lamella.', 19mm. ; greatest breadth about 2"5mm. General 

 ground-colour dark sepia-brown. Head pentagonal ; 

 transverse measurement, about 3-2 5mm., longitudinal 

 r75mm. ; the lateral edges slope considerably back- 

 wards. Atitcniue seven-jointed, basal two stout, the 

 second darker distally ; all remaining joints darker 

 in centre. Mask flattish, triangular, narrow at the hinge, 

 and produced anteriorly in an obtuse angle ; extending 

 to the insertion of the fore-legs ; the palpi bearing a 

 row of hairs near the outer margin ; the sharp, slender, 

 movable hooks interlacing when the mask is at rest ; a 

 half-circle of hairs on the bod}- of the mask. Eyes rather 

 large, situated at the fore-corners of the head ; pear- 

 shaped, with the stalk pointing backwards ; colour dark 

 brown. Occiput narrow, separated from e}'es by a waved 



