402 Annals of the Carnegie Museum. 



cc. Anterior tibiae provided witli auditory perforations, or openings, on both 



sides Metioche Stal. 



bh. Terminal joint of the palpi either dilated at the apex or simple. Tegmina 



of the female coriaceous, of the male membranous, and furnished with 



a tympanum. 



c. Anterior tibiae furnished with a single auditory opening, or none. Wings 



abbreviated. 



d. Front tibiae without an auditory opening. [Southeastern United 



States] Falciciila Rehn. 



dd. Front tibiae usually with a single, none, or sometimes with two audi- 

 tory openings. 

 e. Terminal joint of the palpi dilated. Auditory openings circular or 

 elliptical, one, two. Tegmina membranous, the veins well- 

 developed. Color of insect modest. [North and South 

 America] 

 /. Anterior tibiae with two auditory openings. Wings variable, 



but usually caudate Cyrtoxipha Brunner. 



ff. Anterior tibiae with a single or rarely no auditory opening, 



usually abbreviated Anaxipha Saussure. 



ee. Terminal joint of the palpi tubiform. Auditory apparatus linear, 



imperforate. Tegmina corneous, the veins poorly defined. 



Color of insect bright. [Costa Rica] . . Symphyloxiphus Rehn. 



A A. Last joint of the palpi dilated, foliaceous. Antennae with the basal joint 



small, narrow. Lateral lobes of the pronotum narrowed anteriorly, the 



lower margin entire. Tegmina corneous, furnished with a tympanum in 



the male. Anterior tibiae peifo rated from both sides. 



b. Head vertical, trigonal. Front between the antennae narrowly rostrate. 



Antennal foveolae rather large. Pronotum short, subselliform, the 



anterior angles expanded and subreflexed. [Tropical America] 



Thamnoscirtus Saussure. 



bb. Head porrect, subhorizontal, flattened above. Front between the antennae 



broad. Antennal foveolae small. Pronotum variable, trapezoidal, or 



elongate-cylindrical, the lateral margins straight. [North and South 



America] Phylloscirtus Guerin. 



Genus Metioche Stal. 



Metioche St.\l, (Efv. Vet.-Akad. F"orh., XXXIV, pt. i (1877), p. 44; Kirby, Syn. 



Cat. Orth., II (1906), p. 78. 

 Piesloxiphus Saussure, Mem. Soc. Geneve, XXV (1878), p. 467; Abhandl. Senkenb. 



Ges. XXI (1899), p. 606; Karsch, Berl. Ent. Zcitschr., XXXVIII (1893), 



p. 161. 



This seems to be an oriental genus, which for the most part is con- 

 fined to the Indo-Chinese region, as well as to Oceanica to the east- 

 ward. A very few forms of the genus, however, are to be found in 

 the African region. Recently a single species has been described 

 from northern South America. 



