240 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



narrower than the lobes (female). Tegmina abbreviate, much shorter 

 than the pronotuin, lateral and widely distant, obovate, twice as broad 

 as long, well rounded apically. Fore and middle femora somewhat 

 tumid in the male; hind femora uniformly navous witli a faint greenish 

 tinge, the entire geniculation and base of tibiae black; rest of hind 

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

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

 men scarcely clavate, somewhat recurved, the supraaual 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 interrupted median sulcus; furcula obso 

 lete, represented by mere disk-like thickenings of the inner portion of 

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

 slender, subequal, nearly straight but incurved, apically truncate, 

 shorter than the supraanal plate; subgenital plate very small and very 

 short, of very unequal breadth, the lateral and apical margins on the 

 same plane, as seen from above augulate. 



Length of body, male, 12.25 mm., female, 14.5 mm.; antennae, male, 

 8 mm., female, 6.5 mm.; tegmina, male, 2.5 mm., female, 2 mm.; hind 

 femora, male, 8.75 mm., female, mm. 



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



59. MELANOPLUS RUSTICUS. 



(Plate XVI, fig. 4.) 

 Pezotettix rusticus STAL, Bib. K. Sv. Vet.-Akad. Hancll., V, Xo. 9 (1878), p. 13. 



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

 I am able to give an illustration ot the male abdominal appendages. 

 StaTs description is as follows: 



Praecedenti [MeJ. plebejus] simillimus, differt oculis nounihil minoribus, an tennis 

 longioribus, vitta lateral! pronoti percurrente, forma interval]! steruorum, lobis geni- 

 cnlaribusfemorum posticorum nigris, tantum apice imo pallidis nee nou forma partinm 

 analium maris. , 9 . Long. 20 mill. 



$. Antennae femoribus posticis vix breviores; oculi majusculi, modice convex!; 

 intervallum loborum niesosternalium anterius Jobis dimidio angustius, retrorsnm 

 sensim ampliatum; lobi rnesosternales leviter transversi ; lob! metasternales fortiter 

 appropinquati ; abdomen posterius baud vel vix tumescens, apice levissime recurvum ; 

 segmentum dorsale nltimum e medio lobos duos sat longos, sensiiu acuminates, divari- 

 cates, ernittens; lamina snpraanalis triangularis paullo longior quam basi latior, 

 lateribus leviter rotundatis instrncta, apice angulum subacutum formans, sulco lou- 

 gitudinali an to medium distincto, pone medium obsolete instructa, prope latera longi- 

 tudinaliter irapressa; cerci compress!, latiusculi, basi sensim nonnihil angustati, deiu 

 ubique aeque lati, posterius extus leviter excavati ; lamina subgenitalis brevis, fortiter 

 recurva, sinuato-truncata, macula parva apical! uigra notata. 



9 . Antennae femoribus posticis nonnihil breviores; oculi minores; lobi mesoster- 

 nales transversi, iutervallo circiter duplo latiores; intervallum loborum mesosternal- 

 ium utrimque sinuatum, prope basin angustius, hinc retrorsum ampliatum; lobi 

 metasternales sat distantes." 



Patria: Texas. (Mus. Holm.) 



Stal places this species in his fourth division of the genus Pezotettic, 

 which he regards as equivalent to Paroxya Scudder, and which he defines 



