HEMIPTERA. 267 



beneath them ; fore legs hooked, predatory ; tarsi with a 

 single joint ; middle and hind legs not formed for swim- 

 ming ; tarsi two-jointed ; tail armed with two long setaceous 

 appendages: aquatic; carnivorous; crawl on aquatic plants, 

 but do not swim. Ranatra, Nepa. 



Water-boatmen or Notonectites. Antenna very short, 

 concealed below the head ; fore and hind 

 wings as in the preceding; fore legs un- 

 armed, middle and hind legs formed for 

 swimming; all the tarsi two-jointed; tail 

 without appendages : aquatic; carnivorous; 

 swim with ease, swiftness, and elegance ; 

 cannot crawl on aquatic plants like the pre- water-Boatman, 

 ceding. Naucoris, Notonecta, Corixa, Sigara. 



Frog-hoppers or Cicadites. Antenna very short, scarcely 

 projecting beyond the head ; fore wings coriaceous, meeting 

 with a straight suture ; hind wings membranaceous ; hind 

 legs incrassated, formed for leaping; tarsi three -jointed : 

 most of the genera leap readily, but fly badly. Inhabit 

 vegetables, on the sap of which they feed. Cicada, the 

 only species inhabiting this country was lately discovered 

 in the New Forest by Mr. Weaver ; the pupa-case has been 

 found clinging to the stem of the common brakes, on the 

 roots of which the larva is supposed to feed ; the pupa-case, 

 together with the perfect insect, is represented at the end of 

 the chapter ; it is the Cicada Hamatodes of Linneus : 

 Cercopis, Membracis, Psylla. 



Gall-insects or Coccites. Antenna hirsute, long, monili- 

 form, many-jointed; fore wings semi-coriaceous, of uniform 

 substance ; hind wings wanting, or replaced by appendages 

 similar to the halteres of Diptera ; legs of uniform struc- 

 ture, not formed for leaping; tarsi two- or three-jointed in 

 the male, with a single joint in the female; tail furnished 

 with two long seta. The females are apterous, and attach 



