MEXICAN ORTHOPTERA. 93 



the ocellus, slightly divergent infeiiorly, moderately sulcate from the base of the 

 constriction to the ocellus, slightly so inferiorly. Lateral facial carinae promi- 

 nent ; lateral foveolse deeply excavated, invisible superiorly. Eyes moderately 

 prominent, much longer than the infra-ocular space, the form being rather circu- 

 lar. Anteunse slightly depressed, moderately acuminate, as long as the head and 

 pronotum. Median and lateral carinse of the pronotum fairly prominent, weak- 

 est about the median section, strongest posteriorly; the lateral carinae slightly 

 diverging anteriorly, considerably so posteriorly. Transverse sulcus intersecting 

 the median carina at the middle. The anterior margin of the pronotum trun- 

 cate, the posterior obtuse-augulate. Lateral lobes of the pronotum with the an- 

 terior margin slightly sloping; the posterior margin almost vertical; the lower 

 margin with an obtuse lobe posterior to the anterior exposure ; the lower angle 

 very slightly lobiform. Tegmina surpassing the hind femora, narrow, tip rounded. 

 Posterior femora moderately large ; tibiae with 9 spines on the external border. 

 Cerci of male attenuate. The form of the subgeuital plate cannot be ascertained 

 as it is mutilated. 



General color brown, of various shades, with a green dorsal stripe extending 

 from between the eyes to near the tip of the tegmina. Fastigium blackish brown. 

 Eyes clouded with dark brown. Antennse wood-brown. Post ocular stripe dull 

 brown, extending across the superior half of the lateral lobes, and also crossing 

 the lateral carinae on the metazona and forming a border to the superior surface. 

 Lower surface dull ochraceous, strongly touched with yellowish on the lower 

 face. Anterior and median pair of legs light brown. Posterior femora light 

 brown, with a central darker streak, the same color strongly suffusing the apical 

 section. Posterior tibiai pale brown, spines pale yellowish, with black tips. 



J. — Form somewuat heavy (for an OrphuleUa). Fastigium less than a right 

 angle ; lateral carinae slightly developed ; interspace moderately excavated ; the 

 whole head bearing no trace of a median carina. Facial angle vertically de- 

 scending to the antennae, then retreating at about an angle of forty-five degrees. 

 Frontal costa similar to that of the male, but much less deeply sulcate. Lateral 

 facial carinae distinctly visible. Lateral foveolae deeply excavated. Eyes slightly 

 prominent, appreciably longer than the infra-ocular space, the form somewhat 

 circular. Antennae mutilated. Median and lateral carinae of the pronotum 

 moderately prominent, the latter strongest posteriorly where they are moderately 

 divergent. Transverse sulcus intersecting the median carina at the middle. An- 

 terior margin of the pronotum very slightly produced ; posterior margin obtuse- 

 angulate. Lateral lobes of the pronotum with an obsolete inferior lobe as in the 

 male. Tegmina considerably surpassing the hind femora, narrow, tip rounded. 

 Posterior femora fairly large, somewhat expanded, tibiae with nine spines on the 

 external border. 



General color light green, tending towards bluish on the tegmina. Lower sur- 

 fice and abdomen dull purplish brown; the lower face with a green tint of 

 greater brilliancy than the general color. Eyes wood-brown, with a transverse 

 stripe of blackish brown, this being an anterior extension of the post ocular 

 stripe. Post ocular stripe extending back and decorating the lateral carinae of 

 the pronotum ; on the head it is rather faint and is composed of two bars of color, . 

 the lower dull blackish, and the upper pale yellowish ; on the pronotum the same 

 only richer, weak centrally, the black being above the yellowish on the meta- 

 zona, and on the superior surface of the pronotum. Tegmina with the •apical 

 third somewhat transparent, of a pale brownish tint. Anterior femora and 



TRANS. AM. ENT. SOC, XXVII. OCTOBER, 1900. 



