16 COREINA. 



FAMILY 9. RAPHIGASTRID^E. 



Head subquadrate or angulated. Rostrum slender, long, or very 

 long; rostral channel shallow. Antennce slender, sometimes long. 

 Pronotum hexagonal, the hinder angles sometimes much produced. 

 Scutellum triangular ; the sides sinuate, constricted beyond the 

 middle ; apex rounded or pointed. Sternum with a very deep, thin 

 keel (sometimes slighter, and on the prosternum only). Tibia some- 

 times inwardly, with a fine spine ; sometimes outwardly, flat, with 

 the margins more or less reflexed ; tarsi 3 or 2-jointed. 



Abdomen beneath, on the second segment, with a mucro or a long 

 appressed spine reaching across the sternum. The genital segments vary 

 in the different genera. In Tropicoris and Piezodorus they follow the 

 same type as in the Pentatomida;. In Acanthosoma the structure is given 

 under the genus. Gen. 1, Tropicoris ; 2, Piezodorus ; 3, Acanthosoma. 



SECTION 2. COREINA. 



Coreodes, p., Burm. 

 Coreodse, Flor. 

 Coreidse, West., p., Fieb. 

 Supericornes, p., Am. et Serv. 

 Supericornia, p., Doll. 



Structure somewhat robust or elongate. Head with the side mar- 

 gins rounded. Antennae (in the British species always) 4-jointed, 

 inserted far in front of the eyes* at or near the outer anterior angle 

 of the crown. Ocelli 2. Rostrum 4-jointed. Scutellum not reach- 

 ing half the length of the abdomen. Elytra : Corium, the nerves 

 ending in one or two rhomboidal cells on the posterior margin ; 

 Membrane with generally furcate nerves springing from a transverse, 

 basal nerve. Tarsi trimerous, with two lobes between the two claws 

 at the end of the last joint. 



Abdomen. The genital segments vary in the different genera. 



* Amyot and Serville give the point of insertion of the antennae in their Family 

 Supericornes as on or above an ideal line, drawn from the eyes to the origin of 

 the labrurn ; while in their Family Infericornes it is below such a line. 



