432 Rev. W. Kirby on Scaphura Vigor sit. 



with a conical head, but those with an obtuse one should not be so 

 called. In fact, this tribe includes several genera or subgenera. 

 Our most common species, with an obtuse head and straight ovi- 

 positor (Locusta viridissima, F.), with its affinities, I would call 

 Acrida, and leave Conocephalus for those with a conical head. 

 Those whose elytra, or rather tegmina, so beautifully imitate the 

 leaves of plants, distinguished by a recurved ovipositor, I would 

 call Pterophylla. I possess an undescribed genus, which connects 

 the tribe in question with the Locustidw (Gryllus, F.), of which I 

 will here give a description. 



Genus. SCAPHURA. 



.Antenna;, basi filiformes, apice setaceae. 



Ovipositor, brevis, cymbiformis, punctis elevatis acutis scaber. 



Vigoksii. Sc. atra, abdomine ccerulescente,femoribusposlicis, 

 fascia media albida, elytris apice pallescentibus. 

 Long. Corp. Lin. 14. 

 Habitat in Brasilia. D. Hancock.* 



Before I conclude I wish to say a word on the Nomenclature 

 of the tribe of insects to which Fabricius has transferred Linne's 

 name of Tettigonia, before discussed. This tribe was by the 

 Greek writers called Tettix, and by the Latins Cicada. M- La- 

 treille has exchanged, and perhaps not improperly, Fabricius's 

 name, which means strictly a diminutive Tettix, for the latter. 

 As there appear to me at least three types of this tribe, these three 

 names may be retained. Those, the lateral margin of whose pro- 

 thorax is rounded, to which section C. Orni, probably Virgil's 

 Cicada, belongs, might retain the name Cicada; those the 

 sides of whose prothorax are dilated and angular, as Tettigonia 

 limbata, might be denominated Tettix ; and those small ones, 

 the sides of whose prothorax are deflexed and have no margin, 

 as T. sanguinolenta, might very properly inherit the much 

 bandied name of Tettigonia. 

 Barham, Nov. 30, 1824. 



* Mr. Kirby has kindly promised to communicate a more detailed description 

 of Scaphura Vigorsii hereafter. — Ec. 



