TETTIGIN^E. 5 



under consideration is Prof. Bruner's short article on "Nicaraguan Orthoptera " *, 

 containing the description of one species and brief mention of seven others, with several 

 figures. Under bibliography I have referred simply to the original description, to the 

 monograph, and to publications treating of the region under consideration. 



In addition to the material sent me for examination by the Editors of the * Biologia,' 

 I have had for study and treatment a considerable number of Tettiginae from Central 

 America contained in the collections of Prof. Bruner (including most of those referred 

 to in his above-mentioned paper) and of Mr. S. H. Scudder — in all, over 150 specimens. 

 To these gentlemen I desire to express my obligations for this privilege, and for 

 the opportunity to study other forms whose identity was of importance relative to the 

 nomenclature of the material here considered. 



Key to Groups and Genera. 

 A. Anterior femora carinate above. 



B. Facial costa very widely forked, forming a facial scutellum . CLADONOTiE. 



(Elytra and wings absent.) Tylotettix, gen. nov. 



BB. Facial costa narrowly forked, or, if widely so, with elytra 

 present. 

 C. Posterior angles of lateral lobes of pronotum turned 



outward, obliquely truncate behind METRODORiE. 



D. Mid-carina of pronotum conspicuously serrato- 



undulate. Elytra minute, elongate ; vertex concave. Chiriquia, gen. nov, 

 DD. Pronotum flat above, little depressed. Elytra lanceo- 

 late. Body slender . Otumba, gen. nov. 



DDD. Pronotum strongly depressed. Body stout. Vertex 



truncate. Elytra and wings absent Platythortjs, gen. nov. 



CC. Posterior angles of lateral lobes of pronotum turned 



downward TETTIGKLE. 



E. Facial costa widely forked, scutelliform. A short 



supernumerary carina midway between the humeral 



angles and the mid-carina Ochetotettix, gen. nov. 



EE. Facial costa narrowly forked ; rami parallel or little 



divergent. 



F. Vertex considerably wider than eye, more or less 



advanced. Antennae stout, joints short and 



broad. Pulvilli of posterior tarsi flat or rounded 



below . Tettix, Latr. 



FF. Vertex truncate, narrow, equal to or narrower 

 than eye, rarely a little wider. Antennae slender. 

 Pulvilli spiculate Paratettix, Bol. 



* Bruner, Lawrence, " Nicaraguan Orthoptera" [Bulletin from the Laboratories of Natural History of the 

 State University of Iowa, iii. no. 3, pp. 58-69, tabb. 2, 3 (1895)]. 



