240 rnocKHifixas of r///; xjTiny.tr MrsEr.v. voi„xx. 



narrower tlia II tlu; lobes (remale). Tt'jjfmiiia abbreviate, much shorter 

 than the proiiotuin, hiteral an<l wicU'ly distant, obovate, twice as broad 

 as lon«i, well roiindcMl a|)ically. Fore and middle lemora somewliat 

 tnnii<l in the male; liind femora uniformly tlavous with a faint f^reenish 

 tin<;e. the entire jjcuiculation an<l base of tibiae black; rest of hind 

 tibiae greenish yellow, the spines l)lack beyond the base, seven (female) 

 to nine (male) in number in the outer series. Extremity of male alxlo- 

 men scarcely clavate, somewhat recurved, the supraanal plate subtri- 

 angular with sinuous sides and rounded subrectangulate apex, the 

 surface subtectate, rising to the sharp submedian ridges which inclose 

 the percurrent but mesially interrujjted median sulcus; furcula obso 

 h*te, represented by mere disk-like thi<'kenings of the inner ])ortion of 

 the divided halves of the last dorsal segment; cerci small, nuxlerately 

 slender, subequal, nearly straight but incurved, ai)ically truncate, 

 shorter than the supraanal plate; subgenital i>late very small and very 

 short, of very uneciual breadth, the lateral an<l apical nuirgins on the 

 sanu' ])lane, as seen from above angulate. 



Length of body, nuile, 12.ur> mm., female, 14. r> mm.; antennae, male, 

 S mm., female, ().5 mm.; tegmina, nuile, 2.5 mm., female, 2 mm.; hind 

 femora, male, <S.7r> mm., female. mm. 



One male, 1 female. Mexico, W. S. IJlatchley. 



59. MELANOPLUS RUSTICUS. 



(Plate XVI, ng.4.) 



PcotfUix rnstU'iis Stal, Bib. K. Sv. Vet.-Akad. Haudl., V, Xo. 9 (1878), p. 13. 



I have not seen this species, but bj' the courtesy of Doctor Aurivillius 

 1 am able to give an illustration ot the male abdominal aiix^endages. 

 Stal's description is as follows: 



Praecedenti [Mel. plebejiis] siinillinius, tlirtert oculis noimiliil iiiinorilms, iinteniiis 

 lony;ioril)us, vitt:i laterali pronoti perenrreiite, forma intervalli steriiorum, lobis ••■eiii- 

 cnlaribiis iVinoruni postioonim nigris, taiituin apiee imo pallidis nee 11011 forma partiiiiii 

 aiialiiriii maris, cf » 9 • L«>iig. 20 mill. 



g. Antennae fenioribus postifis vix breviores; ociili niajimculi, niodice convexi: 

 iutervallum loboriim mesosternalium anterius Jobis dimidio aiigiistins, retiorsnm 

 seusim ampliatuni; lobi mesosternales leviter transversi; lobi metasternale.s fortiter 

 api)roi>in<|uati ; abdomen pitsterius baud vel vix tnniesceiis, apiee levissime reciirvuiii ; 

 segmenting dorsalc nltiniiim c iin'dio lobos duos .sat loiigos, scnsim aciiminatoH, div.iii- 

 <'atos, emittens ; Limiiia snpraaiialis triangularis panllo longior quam basi latior, 

 lateribus leviter rotundatis instrnct;i, apire angulum subacutiim formans, sulco b>:i- 

 gitndinali ante medium <listinct(>, pone medium obsolete instriicta, prope latera longi- 

 tudinaliter imj»ressa; cerci eompressi, latiusculi, basi sensim nonnibil angustati. deiu 

 nbi(|U«'a»M[uelati, posteriusextusleviterexcavati ; lamina subgenitali.s brevis, foitittT 

 recurva, sinuato-truncata, macula parva anioali nigra notata. 



9. Antennae fenioribus posticis nonnibil breviores; ociili minores; lobi mesoster- 

 nales transversi, intervallo circiter duplo latiores; iutervallum lobornm mesosteriial- 

 ium utrim<iue sinuatum, prope basin augustius, biuc retrorsum ampliatuni; lobi 

 metasternales sat distantes." 



Patrin: Texas. (Mus. Holm.) 



Stal places this species in his fourth division of the genus Pezotrfti.v, 

 which he regards as equivalent to Paroxya 8cudder, and which be detines 



