ACRIDIDiE, 639 



border; fore border straight; sides rounded; hind border elongated, 

 sligbtly angular. Proslerual spine stout, compressed, obli(|ite, keeled, not 

 extending to the inesosternum. Hind femora longer than the abdomen ; 

 hind tibise shorter than the hind femora. Fore wings a little longer than 

 the body. 



1. EVNISACRIS EXTRAKEA. 



Mas. Teslacea, viridi pallido varia ; prnlhorax ferrugineo bivittnlus ; 

 femora pnslica exlus nigra quadrimacutala, intus nigra trimaculala ; 

 alee cincrecc. 



Male. Testaceous, partly pale green. Protborax with two ferru- 

 ginous stripes. Hind femora with four Mack spots on the outer side and 

 with three on the inner side. Wings cinereous; veins testaceous. Length 

 of the body 11 lines; expansion of the fore wings 25 lines. 



a. Monte Video. Presented by C. Darwin, Esq. 



Genus 13. CALACRIS. 



Corpus gracile, fere cylindricura. Caput et protborax sul'Carinat:i. 

 Fastigium depressum, antice latescens. Oculi appioximali, subpniminuli. 

 Antennae filiforines, longae, graciles. Protborax scaber, postice sublaiescens, 

 foveolis Iransversis bene deteruiinatis, marginibus subrotun<ialis. Prostei ni 

 spina ionga, gracilis, acuta. Femora postica abdomine longiora. Alas 

 anlicae corpore paullo breviores. 



Body slender, nearly cylindrical. Head and protborax with a slight 

 keel. Head smooth; tip of the vertex depressed, widening towards the 

 antenuEe; space between the eyes narrow; front with four distinct keels, 

 nearly parallel, slightly approximating in the middle; outer keels sligbily 

 diverging; towards the lace. Eyes elliptical, rather prominent. Aiiiei)iice 

 filiform, long, slender. Protborax scabrous, slightly widening hindward ; 

 transverse impressed lines strongly marked ; borders sliyblly rounded. 

 Prosternal spine long, slender, acute. Hind femora longer than the alido- 

 men; hind tibiae rather shorter than the biud femora. Fore wings a little 

 shorter than the body. 



i. Calacris pkrmista. 

 Acriilium iiermistum, Serv. Hist. Ortli. 6QQ. 

 Buenos Ayres. 



2. Calacris sanouinipes. 



Acridium seneo-ocnlatum, Deg. Ins. iii. 502, pi. 42, f. II. — Acridium 

 saiiguinij)es, Olic. Enc. Metk. vi. 2.'}1. Serv. Hisl. Orlh. 67i)— 

 Callipliimus sanguinipes, Serv. Rev. 93. 



Brazil. 



