74 HANDBOOK OF ANTS, BEES, ETC. 



I'amily 13, Galgididce. — This family only includes a few 

 American species, which are generally brown spotted with yellow. 

 Galgttlus oculatus inhabits the southern part of the United States, 

 and measures about two-fifths of an inch in length. 



Family 14, Ncpidce. — The species of this family are not very 



r 



Fig. 92.— Galgu'.us Oculatus (Mag.) 



numerous, but are of considerable interest. They are of large 

 size, and very fierce and voracious. The genus Betostofna, found 

 in the East Indies and America, includes the largest species of 

 Hete?'Opfera, some of which measure four and a half inches in 



Fig. 93. — Nepa Cinerea. 



length, and nearly six inches in expanse of the wing. Their food 

 consists of small fish, frogs, etc. 



The best-known species in our own country is the Water 

 Scorpion {Nepa cinerea)^ which has the power of inflicting a very 

 painful wound if handled. It measures about an inch in length. 



