480 PllOCEEDINGS OF riTK XATIOXAL MVSEVM. voi. xxm. 



more obtuse, the basal half sulphurous, the rest infuscated. Posterior femora with 

 the basal half broad with the margins dilated and sinuate l)eyon(l the middle as well 

 as strongly narrowed, inner face black with the margins and a preapical band yellow; 

 on the outer side the carinpe are punctate with black. Variety a, wings with the 

 apical half with hyaline clouds. VuricUi h, disk yellow with an obsolete fuscous 

 band. Length of body, male 17 mm. ; female 30 mm. ; length of tegmina male 18 nun., 

 female 26 mm. 



Mexico, in temperate and higher regions; Orizaba, Oaxaca. 



TRIMEROTROPIS PISTRINARIA Saussure. 

 Trimerotropis jyistrinaria Saussvre, Prodr. (Rlip., 1884, \i. 173. 



Plain brown with the tegminal bands quite well deliued and moder- 

 ately di.stinct. Size medium to large. 



Sc'utellum slightl}' sulcate with the median carina slight but visible, 

 median and lateral foveolte well impressed. Pronotum with the 

 median carina ver}^ slight; metazone more than twice as long as the 

 prozone, with the disk furnished with a few scattered quite large 

 granulations; process of the metazone acute angular with the sides 

 straight and the tip sharp. Tegmina with the median and basal bands 

 about the same size with boundaries well defined and moderately 

 broad, equaling the light space between; annuli of the apical third 

 scattered. Wings moderately broad, being a little less than one and 

 two-thirds times as long as broad; fuscous band very broad, being a 

 little more than one-third the length of the wing in width, scarcely 

 continued at all upon the posterior border; spur rather long, extend- 

 ing nearly halfway to the base. Posterior femora and tibite as in 

 Trim erotropis QnelarioptenM. 



Length of body, male 22 nmi., female 32 mm.; length of tegmina, 

 male 25 nmi., female 31 mm.; length of posterior femora, male 13 

 mm., female 16i mm. 



One male and one female, Zacatecas, Mexico, November, 1897, 

 Bruner collection; Texas, Boll collector; Saussure. 



As Saussure remarks, this species approaches Hadrotettix^ but it is 

 a true TriTnerotropis in most of its structural characters, and entirely 

 so as far as coloration is concerned. 



TRIMEROTROPIS MELANOPTERA, new species. 



Color plain dull brown with moderately distinct tegminal bands. 

 Size, large. Scutellum moderately sulcate with slight but rather dis- 

 tinct median carina, median and lateral foveoh>3 unusually well 

 impressed. Pronotiun with the median carina very low; metazone 

 twice as long as the prozone, smooth with a very few widely scattered 

 larger granulations; process of the metazone acute angular with the 

 sides straight and the tip square. Tegmina with the basal and 

 median bands rather ill-detined and more or less distinct, the latter 

 broader, the apical third is punctate with scattered annuli scarcely 

 grouped into a band. Wings of moderate size, rather long but dis- 



