192 GRYLLUS, lOBMATOPUS. 



campestris, (field cricket,) wings shorter than the 

 wing-cases ; body blackish ; style linear. 



Section B. Antennas filiform ; feelers simple; 

 tail simple; throat with a horn- like protuber- 

 ance. Grasshopper and Locust family. 



migratorius, (egyptian locust,) thorax of a single 

 segment, subcarinate ; mandibles blue ; body 

 brown, varied with dark spots; legs blue ; hind 

 thighs and shanks yellowish. 



grassus, (grasshopper,) thighs sanguineous; wing- 

 cases greenish ; antennse cylindrical. 

 -See MS. P. 



4 3. GvMNETRue. Spec. 1. 



cepedianuS) pectoral-fins small ; upper jaw much 

 extended ; teeth very small. 

 See MS. F. 



4 1. GYMNOTUS. Spec. 9. 



dectricusi (electrical eel,) naked, brown, without 

 dorsal-fin ; caudal-fin obtuse and joined to the 

 anal. 3 to 6 feet long. 

 ^ee MS. P. 



8 5. GYUINUS. Spec. 11. 



natator, (water-flea,) oval, black, obscurely striate. 

 Plunge under water when disturbed, drawing a 

 bubble resembling quicksilver in appearance. 

 See MS. P. 



H. 



2 5. HJEMATOPUS. Spec, 1. 

 estralegus, (sea-pie, oyster-catcher,) bill, eyelids 

 and legs red ; body black, sometimes white be- 

 neath. 

 See MS. P. 



