WATER-BUGS, ETC'. 



in the meso- or metathorax, and, if in the latter place, 

 opening between the hind legs. Many are wingless, and in 

 some species the females are wingless. The definition of the 

 families, and their arrangement, are taken from P. R. Uhler's 

 account of the Hemiptera in "The Standard Natural 

 History." 



Family Corisidae. Aquatic insects, with broad beads, flattened 

 bodies, and swimming feet, the beak passing through a little hole 

 above the actual end of the clypeus. Uorisa ititerrupia Say. 



Family Notonectidae. Boat-shaped, aquatic forms, differing from 

 all other Hemiptera by swimming on their backs. Notonecta 

 undulata Say. 



Family Nepidae Flat-bodied aquatic insects, the body 

 ending in two long respiratory tubes. Voracious and, as in 

 Belosioma grisen (Say), destructive to fishes and tadpoles 

 from its large size and powerful beak. 



Family Naucoridse. 'Flat-bodied, oval, without caudal 

 tubes. Pelocd>'ififeinor<tta(Pii\. Beauv.). 



Family Galgulidae Insects living by the edge of ponds 

 and streams, with the hind legs adapted for running. Gal- 

 gulus oculatus Fabr. 



Family Saldidae. Small, leaping, dull-colored insects, 

 with the head free. Saldn signoretii Guerin. 



Family Hydrobatidae. The water-boatmen have long 

 limbs, wherry- like bodies, and row themselves on the surface 

 of the water. G err is (Hygrotrechus) remigis Say; Halobates 

 Wuelle>-storfii White lives on the ocean far from land. 



Family Veliidae Body short and deep, with short legs. 

 velia obesa Uhler. 



Family Hydrometridse. Dull brown 

 long legs fitted for walking on the sur- 

 face of pools and brooks. Ilydrometra 

 Uneata Say. 



Family Emesidae. Body extremely 

 slender, with thread-like middle and 

 Mind legs, but with spinous, raptorial 

 fore legs. Emeui longipes De Geer. 



Family Reduviidse Body thick, 

 with short coxae, the fore legs set far 

 back. Conorhinus sanguwigus Lee., a 

 large red-spotted bug, which inflicts a 

 severe puncture. ^W/li/nacinrtua Fabr. 



Family Nabidae. Body oblong, with 

 a thick head ending in a long slender 

 beak. Nabis fmai Stein ; Coriscus 

 ferus Linn. 



Family Aradidse. Body very flat, dead-leaf-brown color. 

 crenatiift Say. 



Family Phymatidae. Body thicker; fore legs raptorial. Phymata 

 erosa Herr-Sch. 



Family Tingitidae. Small, very flat bugs living on leaves. Cory- 



FIG. ro. 



Noto- 

 nect a 

 tindu- 

 l at a . 

 Natural 

 size. 



Rhago- 

 insects of linear shape, with 



FIG. 71 Milyas cinctus. 6, beak. 

 After Riley. 



Aradus 



