248 GRAMMAR OF ENTOMOLOGY. 



reticulated, deflexed ; tarsi five-jointed ; smells 

 fetid ; flies mostly in the evening. Hemerobius, 

 Chrysopa, Osmylus. 



808. Stone-flies (Phryganites). Larva with 

 short antennae ; corneous, masticatory man- 

 dibles; sacciferous, aquatic. Pupa necromorphous, 

 changes in the sack formed by the larva. Imago, 

 with very long, multi -articulate, filiform antennas; 

 mandibles and maxillae obsolete ; fore wings 

 deflexed, very hairy ; hind wings ample, much 

 folded longitudinally, not so hairy; tarsi five- 

 jointed. Inhabits the neighbourhood of water ; 

 flies in the evening and during the night, and is a 

 favourite food of fish. Phryganea. 



809. Caddew-flies (Ephemerites). Larva with 

 long, filiform antennae ; corneous, masticatory 

 mandibles ; six articulate legs ; aquatic, carni- 

 vorous. Pupa isomorphous. Imago with short 

 concealed antennae ; mandibles and maxillae ob- 

 solete ; fore wings fully developed ; hind wings 

 small or obsolete ; all the wings beautifully reti- 

 culated, erect, and meeting above the back ; tarsi 

 four-jointed ; telum furnished with long setiform 

 appendages : flight in the evening, in company, 

 rising and falling, and is the favourite food of fish. 

 Ephemera, Baetis, Cloeon. 



810. Dragon-flies (Libellulites). Larva with 

 short antennae ; corneous, masticatory mandibles ; 

 very elongate, jointed, and remarkable labium, 

 furnished with predatory, acute, mandibuliform 



