NEUROPTERA. 45 



hence it is important to make short descriptions of the colors 

 before killing the specimens." The smaller, more slender and 

 delicate Neuroptera should be pinned directly in the collecting 

 box. Many species are caught by a light in the night time, 

 such as Polystoecliotes nebulosus and the Caddis flies (Fig. 46, 



Fig. 46. 



Caddis Fly and Larva and its Case. 



Neuroma semifasciata) ; and a bright light placed in damp situa- 

 tions by streams, etc., will attract large numbers, the smaller 

 species, like moths, being attracted a great distance by light. 

 Other species of this group, so numerous in the northern states, 

 are found in great numbers floating on lakes and ponds. For 



Fig. 47. 



Ant-lion, adult. 



the proper study of the genera of these insects, and often of the 

 species, they should be collected in alcohol, so as to be studied 

 in a flexible state. 



The aquatic larvae and pupae can be reared in aquaria in jars 

 and tumblers, taking care that the weaker species are sepa- 



