J^Sj ClfJE, [Januar>' 1900. 



SYNOPSIS OF SUBFAMILIES AND GENERA OF NORTH AMER- 

 ICAN TETTIGIDAE. 



(Based upon the synoptical table of Prof. Bolivar.) 

 BY J. L. HANCOCK, CHICAGO, ILL. 



1 (3) Antennae filiform, farely the last two articles before the extremity very 



little coinpressed. 



2 (i) Face more or less oblique or perpendicular; median ocellus situated in 



front of the eves. 



3 (16) Anterior femora more or less compressed, carinate above. 



4 (5) Frontal costa furculate between the eyes, the branches strongly diverging, 



fortning a frontal scutelhmi. Subfamily Cladonotixae Bol. 



5 (4) Pronotum largely compressed, above conipleteK foliaceous, roimded-angu- 



late, posteriorly truncate. Gen. ChoropIiyUum .Serv. 



6 (8) Antennae with twelve to fourteen articles ; pronotum anteriorlv truncate, 



or angulate, or rarely angulate produced, posterior angles of the lateral lobes 

 turned downwartls, more or less rounded, not obliquely truncate. 



Subfamily Tettigixae Bol. 



7 ('.3) Vertex advanced in front of the eyes, wider than one of them, in profile 



united with the frontal costa, generally angulate anteriorly. 



8 (6) Antennae with twelve, rarely thirteen article.s ; pronotum with the dorsal 



front margin angulate produced, median carina cristiform, more or less arched 

 longitudinally, median lobule of the posterior margin of lateral lobe feebly- 

 developed, sub-humeral sinus for tlie reception of elytra shallow. 



Gen. Nomotcttix Morse. 



9 (10) Antennae with fotirteen or often thirteen articles; pronotum generally not 



advanced upon the head to tiie eyes, median lobule of posterior margin of 

 the lateral lobe well developed, the sub-humeral sinus quite deep. 



Gen. Tettix Charp. 



10 (9) Vertex a little advanced in front of eves, equal to, or considerablv wider 



than one of them, in profile iniited with the frontal costa rounded, or de- 

 presso-rounded. 



11 (12) Vertex considerabU' wider than one of the eves, brandies of the frontal 



costa more or less strongly divergent, antennae consisting of twelve to thir- 

 teen articles. Gen. Neotetfix Hanc. 



12 (11) Vertex equal to one of the eyes, branches of frontal costa narrowly 



forked, straight and evenh^ divergent. Gen. Merotetiix Morse.* 



* Given on tlie authority of Prof. A. P. Morse; a recently described genus in Journ. N. Y. Ent. Soc. vol. vii, 

 p. 199, 1S99. 



