LOCUSTIDJE. 475 



three spines each and one with two ; hind tibiae with eight minute spines 

 on each side and with two beneath ; tarsi slender. 



Allied to Gryllacris. 



1. PENALVA LATEKALIS. 



Mas. Picea, subtus teslacea ; caput ieslaceum^ plaga apud verticem 

 magna picea strigam testa ceam includenle ; palpi pallide Icstacei ; 

 antenna picece, basi teslaccce; prolhorax teslaceo sordido subnebulosus, 

 laleribus pallide luleis ; pedes tesiacei, spinis apice nigris. 



Male. Piceons, testaceous beneath. Head testaceous ; a large piceons 

 patch on the vertex including a short testaceous streak, which proceeds 

 from the hind border. Eyes piceous. Palpi pale testaceous. Antennae 

 piceous, testaceous at the base. Prothorax indistinctly mottled with dull 

 testaceous; sides pale luteous. Legs testaceous ; spines of the hind tibia? 

 with black tips. Length of the body 12 lines. 



a. Australia. Presented by the late Earl of Derby. 



Genus NOIA. 



Fcem. Corpus gracile, fere lineare. Caput valde convexiim, protho- 

 race paullo latius, antice nitens, verlice antice et fronte supra lanceolatis 

 contiguis. Oculi parvi, prominuli, fere rotundi. Palpi maxillares graciles; 

 articulus ous subclavatus, 3o longior, 4o plus du'plo longior. Antennae 

 longae, graciles. Prothorax longiusculus, transverse bisulcatus, margine 

 antico laleribusque fere rectis, margine postico snbrotundato. Oviductus 

 arcuatus, serralus, abdominis climidio longior. Pedes graciles, femoribus 

 dbiisque spinulosis. Ala? anlicne valde deflexee, abdomen paullo superantes. 

 Alae posticDB nullaB? 



Female. Body slender, nearly linear, not shining. Head a little 

 broader than the prothorax, very convex above ; fore part shining ; vertex 

 and front lanceolate, where they are contiguous between the antenna?, which 

 are approximate to each other. Eyes nearly round, small, prominent. 

 Maxillary palpi slender ; fourth joint more than half the length of the third, 

 less than half the length of the fifth, which is subclavate. Antennae long, 

 slender. Prothorax elongate, with two transverse furrows, of which the 

 hinder one is angular ; an indistinct longitudinal furrow ; fore border and 

 hind border nearly straight; hind border slightly rounded. Sheaths of the 

 oviduct deep, curved upward, more than half the length of the abdomen, 

 minutely serrated beneath and more strongly serrated above and at the tip. 

 Legs slender; femora and four anterior tibiae with two irregular rows of 

 minute spines; hind femora slightly incrassated for half the length from 

 the base ; hind tibiae with two -rows of small spines above and with a few 

 smaller spines beneath. Fore wings much deflexed on each side, extending 

 a little beyond the tip of the abdomen ; veins between the scapular and the 

 costa regular, numerous, oblique, connected towards the base by a few 

 veinlets. Hind wings not developed. 



