68 



ENTOMOLOGY. 



and wings, the latter being thin and finely net-veined alike in 

 both pairs; antennae short, 18-20-jointed. Termes flampes Kollar 

 (Fig. 49), Massachusetts southward. 



ORDER V. ODONATA* (Dragon-flies). 



In the dragon-flies the head is large, the eyes in the typ- 

 ical forms enormous, while the antennae are minute, like 

 short bristles, the sense of sight predominating over that of 

 smell, and the jaws are large and strong, these insects being 

 carnivorous, greedily snapping up flying insects, such as 

 mosquitoes, small flies, etc., which they probably perceive 



FIG. 54. A dragon-fly, Diplax berenice. Male; natural size. 



at a much greater distance than can most other insects. 

 The thorax is large, round, and differs from that of other 

 insects in the great development of the side pieces (espe- 



* SELECTED WOKKS. 

 Cabot, L. The immature state of the Oclonata (Mem. Mus. Comp. 



Zool., i., 1872). 

 Gerstaecker, A. Zur Morphologic der Orthoptera amphibiotica 



(Berlin, 1873). 

 Hagen, H. A. Synopsis of the Neuroptera of North America. 



Synopsis of the Odonata of America (Proc. Bost. Soc. Nat. Hist., 



xviii., 1875). 



Monograph of the earlier stages of the Odonata (Trans. Amer. 



Ent. Soc., xii., 249. 1885) 

 Packard, A. S. Ernbryological studies on Diplax [^schna ^ 



themis, etc. (Mem. Peab. Acad. Sc., 1871). 

 Viallanes, H. Le ganglion optique de la Libellule (^Eschna). (Ann. 



Sc. Nat. Zool., 1884.) 



Also the writings of Charpentier, De Selys-Longchamps, Hagen, 

 McLachlan, Pictet, Rambur, Scudder, and Walker. 



