110 ARTHROPODA. 



Hemisphaerius. Ly strides. Phrictus. 



Mycterodes. Elidiptera. Pyrops. 



Issue. Dichoptera. Fulgora (Lantern-fly). 



Dictyophora. 



Ciociidcs. Poeocera. Cicadida. 



Achilus. Aphasna. Huechys. 



Cixius. Lystra. Mogannia. 



Argeopus. Carineta. 



Asiraca. FulgoridcB. Cicada. 



Allelophasis. Cyrene. Fidicina. 



Delphax. Enchophora. Dundubia. 



Phenax. Hotinus. "~ 



Cystosoma. 



HETEROPTERA. Tarsi three-jointed. Antennae with four or 

 five joints. Wings horizontal, the upper pair coriaceous at the 

 base. 



The rostrum springs from the fore part of the head, not from 

 beneath as in the Homoptera. 



The majority of this group are vegetable feeders, one (Cimex 

 lectularius) has man for its prey. 



The first three families of the following list form the Hydroco- 

 risas ( = Cryptocerata) of Latreille; the remainder are his Geoco- 

 risae ( = Gyinnocerata). Hydrocorisee and the first two families 

 of the Geocorisas are aquatic. Gerstaecker includes Gerridse in 

 the Hydrocorisse ; but the latter, with the Hydrometridas, are the 

 Hydrodromica of Fieber. There are other equally useless divi- 

 sions and subdivisions and names, whether synonymous or not. 

 In round numbers there may be about 10,000 species in this 

 suborder. 



Notonectidce. Eanatra. Hydrometrida. 



Anisops. Hy drometra = Lim - 



Notonecta. Galguhda. nochares. 



Ploa. Pelogonus. 



Sigara. Galgulus. Saldidce. 



Corixa. Salda= Acanthi a. 



Gcrridcs. Leptopus. 



Nepid*. Hebrus 



Aphelochira. Microvelia. Emesidce. 



Naucoris. Mesovelia. Emesodema. 



Nepa. Velia. Eruesa. 



Belostoma. Gerris. Ploearia. 



