78 MANDIBULATA. NEUROI'TERA. 



yellowish, each with a single irregular black streak ; space between the 

 wings dull luteous ; abdomen above and on the sides brassy-green, beneath 

 luteous ; caudal appendages of the males fuscous, pale at the base ; legs 

 reddish, black above ; wings with a black or fuscous stigma. 

 Probably a mere variety of the foregoing insect. 

 Found with the preceding insect. 



Sp. 3. forcipula. Supra laterihusque viridi-cenea, nitens, abdomine suhtusjiaves- 

 cente, thoracis laterihus maris casi'uleo pulveratis, foeminse luteis, pedibus atris. 

 (Long. Corp. 18—19 lin.; Exp. Alar. 21—22 lin.> 



Ag. forcipula. Charpentier, Horcs Ent. p. 6. — Le. autumnalis. Steph. Catal. 

 ■ 308. iVo. 3422. 



Head dull brassy-green, the mouth yellowish; tips of the mandibles black; 

 collar with a yellowish margin behind; thorax above dull brassy-green, 

 with three faint yellowish streaks, the sides and space between the wings 

 covered with a fine blue bloom, on a dusky ground ; abdomen brassy-green 

 above, yellowish below, the terminal segments with a blue bloom ; caudal 

 appendages of the males black, sometimes luteous at the base ; legs black, 

 occasionally yellowish beneath, especially at the base ; wings wuth a black 

 or fuscous stigma. The female has the sides of the thorax luteous, without 

 the blue gloss. 



Found abundantly in some of the marshy districts in the vicinity 

 of the Thames, especially about Plaistow in Essex ; also taken in 

 the New Forest, in Devonshire, near Ripley, &c. 



Genus IX.— CALEPTERYX, Leach. 



Wings coloured, broadish, of a coriaceous texture, composed of very numerous 

 rectangular and polygonal areolets, which are very small and irregular on 

 the margins ; the longitudinal nervures also numerous and recurved towards 

 the inner margin at the apex : stigma in the males wholly obliterated, in the 

 females formed by a curve in the nervure, and thickened : head very broad, 

 tumid in front, and very pilose : eyes large, globose : collar unequal : thorax 

 ample, with a strong dorsal ridge : abdomen very long, cylindric, somewhat 

 linear, a little swollen at the apex, which last, in the males, is furnished 

 with curved appendages. Mask of larva with a triangular excision at the 

 tip, terminating in two points. 



These insects may be known from those of the two preceding 

 genera by the greater width of their wings, which are moreover very 

 thickly reticulated, and composed of very numerous areolets, of 

 various forms, though the majority are rectangular: they are mostly 

 adorned with bright colours, and in the males wholly destitute of 



