424 



THE INSECT WORLD. 



M. Blanchard classes in the same tribe the genus Semblis, whose" 

 larvae are aquatic, with scaly heads, provided with eyes, and with 

 curved mandibles and short antennae. The larvae and the pupae 

 breathe, like those of the EphemercB, by articulated external processes, 

 or gills, analogous to those of fishes. Nevertheless the pupae live on 



Fig. 400.— Semblis lutarius, imago, pupa, and larva. 



land, not in water. They hide themselves in the eartli at the foot of 

 trees, and the adult issues forth at the end of a fortnight, leaving its 

 pupa skin behind. It lives but a few days. The female lays her 

 eggs on reeds, stones, &c. Fig. 400 represents the Mud Scnib/is in 

 its three states. 



We now come to those Neuroptera which undergo complete meta- 



Fig. 401.— Ant-lion {Myrmeleo formicarins). 



morphoses. They are the Myrmeleonidae, of which the Ant-lion 

 {Myrmelco) is the most prominent type, and the Fhryganidcc, or Caddis 

 Flies. 



The larvae of the Ant-lions live on the land, and are carnivorous. 

 When about to undergo their transformation into pupae, they spin for 



