JAMES A. G. REHN AND MORGAN HEBARD 329 



ing into the arcuate caudal margin, which passes rather regularly to the 

 strongly indicated rectangulate humeral sinus. Tegmina surpassing tips 

 of caudal femora by length of pronotum, elongate, lanceolate, greatest 

 width (at proximal third) contained slightly more than four times in length; 

 "costal margin arcuate proximad, straight distad, sutural margin distad of 

 stridulating field straight, obliquely converging to the roundly oblique- 

 truncate apex; marginal field broad mesad, humeral trunk sinuate, much 

 thickened and flattened proximad, median vein with its two distal rami 

 reaching oblique portion of apical margin; stridulating field almost twice 

 length of pronotal disk, greatest width about three-fourths of length of 

 pronotal disk, general form similar to that of huastcca but more elongate, 

 stridulating vein short, very thick, depressed. Wings surpassing apices 

 of tegmina by about length of pronotal disk. Mesosternal lobes less elon- 

 gate than in huasteca, distal section obliquely truncate mesad; metasternal 

 lobes with proximo-lateral angle more decided and distal margin more ar- 

 cuate than in huasteca. Cerci more elongate and regularly tapering than 

 in huasteca, distal section less abruptly denticulate at apex; subgenital 

 plate V-emarginate distad with lateral, articulate, brief and tapering styles. 

 Cephalic femora with at most but three spines on ventro-cephalic margin. 

 Median femora unarmed ventrad. Caudal femora similar in form to those 

 of huasteca but with at most but three minute teeth on ventro-internal 

 margin. 



Allotype.— 9 ; Montelovez, Coahuila, Mexico. September 20. 

 (E. Palmer.) [Hebard Collection.] 



DesmpiroTio/ylWoifype.— When compared with female individuals of huas- 

 teca that sex of the present species differs in the characters given as diag- 

 nostic for the species and in those features possessed by both sexes which 

 are detailed in the description of the male. The ovipositor is slightly more 

 than two-fifths of the tegminal length, quite deep, arcuate, more strongly 

 so distad; teeth on distal half of dorsal margin and distal fourth of ven- 

 tral margin, decided, well spaced. Subgenital plate trigonal. 



Color Notes. — General color courge green to biscay green, occa- 

 sionally paling to light chalcedony yellow on the abdomen (type) 

 and always becoming lettuce green to light bice green on the head 

 and pronofcum, the exposed portion of the wings and distal ex- 

 tremity of the tegmina rarely (one specimen) washed with old 

 gold. Eyes of the general color, lineate with yellowish to hazel. 

 Pronotum with lateral margins of disk more or less completely 

 lineate, distad with raw sienna, faintly bordered laterad, dorsad 

 of humeral sinus, by clove browii, cephalad with ochraceous buff. 

 Tegmina with stridulating field chamois to cartridge-buff, with an 

 oblique irregular maculation extending from base of field to distal 

 section of free margin and a weak edging of same margin proximad 



TRANS. AM. ENT. SOC, XL. 



