iio.1184. hki'ISHkw nr riiK MKLA.snri.isri iuu:it, 45 



thr fVoiit inary:lu trmu'iite. tin* liiiul inar^Mii snl>n»t'tii!ijLrn!:«rf: pro/oim 

 and iiu'tazoiia of siilM'«|ual l«'ML:tli, tlu^ sulcus scparatiii;,' tlnin distinct 

 hut not deep, sudilcniy aii;^ulat(' iu tlic middle l»y the einar^nnation of 

 tlu* pro/oiia, tlie posterior sul«'us ot" the pro/ona arcuate or an^rnlate so 

 as to approach it iu the utiddh*, tiie niiddU> suUmis subparalhd to tiiis 

 but more nearly transverse and crossin;^" the un«ldle of tiie prozona, the 

 front of the prozoua iu no way elevated to receive tiie hea<l. I'ro- 

 stcrnal spine ipiadrale. ap|»ressed, lu'oadiy truncate; interspace betweeu 

 mesosterual lobes subquadrate, a little longer tliau broad iu the male, 

 tlie reverse iu the female, the metasternal lobes attiuj^eut over Hom« 

 s])ace (nmle) (U* api)roxiumte (female). Te;;miua and wiu«;s fully <level- 

 oped, the former with scarcely any ampliation of the costa near the 

 base. Fore and middle feuu)ra but little more jiibbous iu the lunlvi 

 than in the feuuile; hiiul femora not very long, the hind tibiae with ten 

 spines on the outer side. Mar;rin of subj^enital plate of male strai^jht 

 from the base, which is not auipliate, a little elevated at the apex; 

 ceici styliform, about as long as the supraaual i)late, the furcula nearly 

 obsolete. 

 j The genus is coutined so far as known to Mexico and Central America. 



AIDEMONA AZTECA. 



(Platte IV, liK. 1.) 



Platijpht/ma azieca Sai'SSURE, Rev. Maj;. Zool., 18fil (1861), p. 101; Orth. Nov. 

 Amer.. II (ISiili. p. 12.— Wai.keh. (at. Derm. Salt. Brit. .Miis.. IV (1870), 

 1». 71»5. — Tno.M.\.s, Rep. V. S. G»ol. Sui\ . Tfrr.. V ( 1873), p. 223. 



Pezotettix aztecua Stal, Bih. K. Sv. Vet.-Akad. Hamll., V (1878), No. 9, p. 10. 



Aidemona aztern Buunxkk, R»n-. Syst. Orth. ( 1893) p. 14;">. 



IJrownish fuscous above, sometiujes deepening to blackish fuscous, 

 csittrially on the ui)i)er half of the lateral lobes of the prouotum, testa- 

 icous below, often deeply infuscated. Head mostly testaceous, heavily 

 punctate throughout excepting on the vertex, where the puucta are 

 obscure and subdued, and where the cohu- is dark; fastigiuiu with more 

 <»r less elevated but rounded lateral walls; frontal costa slightly 

 widened just above the ocellus; antennae testaceous, more or less 

 iiitiiscated, especially toward apex. l*ronotum heavily and almost 

 e(|ually punctate throughout, both on dorsum and lateral lobes, but less 

 crowded on the posterior half of the lateral lobes of the prozoua, and 

 with a snmll, free, glabrous patch above on either half of the prozona; 

 lower Lalf of the lateral lobes testaceous, in greater or less contrast to 

 tlie blackish upper half, the darker portion widening on the metazona; 

 but while this feature is sometimes very marked, in si>ecimens in which 

 the testaceous under surface becomes ilavous, it is sometimes scarcely 

 to be detected, so infuscated may the lower half become. Tegmina 

 far surpassing the abdomen, rather slender, well rounded apically, 

 piseous from a profuse and rather minute fuscous decking on a semi- 

 pellucid base, the tiecking more or less contiuent iu the basal third; 



