67 



silicate ill front. " Posterior femora not longer Uiaii the abdomen ; but slightly 

 pinnafe; moderately dilated at the base; attenuate toward the apex. 



This genus ^vas first given by Serville as a sub-genus of Tryxalis, who 

 separated it by the following characters : 



"Head slightly elevated; eyes approach the anterior border of the 

 pronotum. Antennas not so long; their joints slightly enlarged. Pronotuin 

 without prominent carinre. Species of small size." 



P. brevicornis, Walk., Cat. Dcrniap. Salt., Ill, 500. 



Syn., Gryllus (Acrida) brericornis, Linn., Syst. Nat., 12th ed., II, G92. — Cent. 

 Ins. Ear., 15. — Amceu. Acad., VI, 398. 

 Truxalis brevicornis, Fabr., Eut. Syst., II, 27. — Thuub. Mem. Acad. St. 

 Petersb., V, 264.— IS^ov. Act. Upsal., IX, 84. 

 viriduhin,* Pal. Beauv. Ins. Ortb., 81, PI. 3, Fig. 4. 

 notoclorns, Pal. Beauv. Ins. Ortb., 80, PI. 3, Pig. 3. 

 Acridium cnslcorne (!), De Geer, Ins., 3, ]i. 400, No. 16, PI. 42, Fig. 7. 



As I have seen no specimen of this species, and only the figures of 

 Palisot. Beauv., and a figure in Professor Glover's plates, supposed to be of 

 this .species, I have concluded to give the short descriptions of the older 

 authors, no description having been published by any recent authority : 



Linnaeus (Syst. Nat., ed. Gmelin, torn. 1, pars IV, No. 205G) describes 

 it thus, under the following division : 



" Antennae ensiform ; head conical, longer than the thorax." "Acridae 

 or Truxalides, Fabric! us." 



" G. hrevicornis. — Green ; head somewhat prominent ; antennae com- 

 pressed, longer than the thorax. America meridionali." 



In Aiuoen. Acad., VI, 398, the Ibllowing is added : 



"Similar to iiJMro/;as/.s. Head sub-conic in front, but not prominent." 



Thunberg, M(^m. Acad. St. Petersb., V, 264 : 



' Truxalis brevicornis, green, unspotted ; thorax convex, very sliglitly 

 costate; on each side a crenate line along the head and thorax. Antennae 

 depressed, linear. Hemelytra passing the abdomen one-third their length ; 

 wings hyaline, scarcely an inch long. Habitat, East and West Indies. T. 

 brevicornis, Fabr., Ent. Syst, 2, p. •27." 



In Nov. Act. Upsal., IX, 84, the description is the same ; l:»ut her(! he 

 gives the following synonyms: 



" Gryllus brev'xorms, Linn., Syst. Nat., I, 8, p. 692. 



* Walker's quotation of De Geer under tbis name is an error. 



