LOCUSTID.E. 249 



gracillimae. Prothorax postice anguslior productus et valde rotundalus, 

 cariuis lateralibus indetermiDatis, lateribus rotundatis. Oviductus per- 

 parum arcuatus, corpore vix brevior. Pedes sat robusti, tibiis anticis 

 fern orib usque biseriatim spinosis, tibiis intermediis triseriatim spinosis, 

 tibiis posticis quadriseriatim spiuosis. 



Female. Body smooth, shining, rather slender. Head a little nar- 

 rower than the prothorax, with a stout short porrect acute spine between 

 the eyes; front flat, oblique; face small. Eyes moderately large, very 

 prominent. Maxillary palpi slender; third and fourth joints about equal 

 in length; fifth subclavate, much longer than the fourth. Antennae very 

 slender. Prothorax with the hind part narrower, elongated and much 

 rounded; two very slender transverse furrows; first near the fore border, 

 very slight, forming a slight hindward angle in the middle ; second nearer 

 the hind border, hardly apparent ; lateral keels not defined; sides rounded. 

 Abdomen lanceolate, longer than the prothorax. Oviduct very slightly 

 curved upward, almost as long as the body. Legs rather stout, moderately 

 long ; four anterior femora with five minute spines on each side beneath ; 

 hind femora beneath with two rows of numerous minute spines ; four 

 anterior tibia with five rather long spines on each side; middle tibia? with 

 two spines above; hind tibiae with four rows of numerous minute spines; 

 apical spurs short. No wings. 



The hind part of the prothorax is less elongated than that of Thyreo- 

 notus, and it differs much from that genus in the structure of the head 

 between the antenna. 



1. REQUENA VERTICALJS. 



Fcern. Fulva; vertex niger, testaceo bivittutus ; antenna bad nigrcs ; 

 prothorax vittis duabus anticis testaceis niyro marginatis ; femora 

 postica. nigro univiltata. 



Female. Tawny. Head black above; a pale testaceous stripe on 

 each side between the eye and the hind border, continued on the prothorax 

 between the fore border and the first furrow, and there bordered with black 

 on the outer side. Eyes a little darker than the body. Antennae black at 

 the base. Hind femora with a black stripe on the outer side, where there 

 is a row of slight transverse furrows. Length of the body 8 lines. 

 a. Swan River. Presented bv Sir J. Richardson. 



Genus 49. PALOTTA. 



Mas. Corpus robustum, glabrutn, nitens. Caput carinula plana 

 inter antennas instrucium ; frons obliqua. Oculi elliptici, subglobosi. 

 Palporum articulus 3us 4o paullo brevior; 5us subclavatus, 4o valde 

 longior. Antennae graciles, basi approximatae. Prothorax bisulcatus, 

 postice angustior et elongatus, carinis lateralibus indeterminatis, lateribus 

 deflexis valde rotundatis, margiue postico rotundato. Pedes validi; tibiae 

 quatuor anteriores biseriatim quinquespiuosae ; tibiae postica? quadn- 

 seriatirn spinosse. Alae breves. 



Male. Body stout, smooth, shining. Head as broad as the pro- 

 thorax, with a flat keel between the antennae, which are approximate; front 



fc 



