24 COLLECTING AND PRESERVING INSECTS. 



Neuroptera (Fig. 23, Forceps tail, Panorpa; Fig. 24, Man- 

 tispa) have the mouth parts free again, the wings large and 

 Fig. 24. net-veined, the hind pair being often 



larger than the primaries. Their 

 bodies are more elongated than 

 those of other insects. The meta- 

 morphosis is incomplete, the larvae 

 and pupae closely resemble the im- 

 agines, and are both active, and 

 with few exceptions they are all 

 aquatic. The different species pre- 

 Mantispa. sent strong analogies to all of the 



other suborders. The wingless, lower genera present more 

 analogies than other insects to the Myriopods. 



The order of Araclmida is divided into three suborders : 



Araneina, or spiders, which pass through no metamorphosis. 



Pedipalpi, or harvest-men (Phalangium) and scorpions, 

 which undergo no metamorphosis, and all agree in having the 

 maxillary palpi enlarged and ending in a forceps, with the 

 abdomen distinctly jointed, and the 



Acarina, or mites, the young of which are usually born with 

 but three pairs of feet, and in which the body is oval. 



The order of Myriopoda is divided into the Chilopoda, of 

 which the centipede is a type. In these each ring bears but 

 a single pair of feet, and the body is flattened ; while in the 

 second division, the 



Chilognatha, the body is cylindrical, and each segment ap- 

 pears to bear two pairs of legs. Of this group the thousand 

 legs (Julus) is a type. 



SPECIAL DIRECTIONS FOB COLLECTING INSECTS. 



We now proceed to give more special directions for collecting 

 and preserving insects of the different groups. 



