Bkuner : South Amkkican 'rErRioirj/F,. 12.3 



Habitat. — This insect has been recorded from bolh Argentina and 

 Brazil. It is not represented in the present collections. 



Subfamily BA TRA CHIDING. 



Genus Tettigidea Scudder. 

 Tetligidea Scudder, Bost. Journ. Nat. Hist., VI 1 1, 1862, 476. — Bolivar, Ann. Soc. 

 Ent. Belg., XXXI, 1887, 299. — H.vncgck, Genera Insectorum, fasc. 48, 1906, 67. 



The genus Tettigidea is confined entirely to the Occident, where the 

 species are distributed over the Neotropical, Sonoran, lower part of the 

 I'pper Sonoran, Austroriparian, Carolinian, and Transition regions. 

 About two score of species are already recognized if the ten that are 

 described as new in the present paper are included. These species are 

 readily separated into two distinct groups by the construction of the an- 

 terior edge of the pronotuni. The\- are also separable into an equal number 

 of groups either by haNing the dorsum of the pronotum simply granulose 

 or rugose, or by having its disk sui)i)lied with supplemental longitudinal 

 carinae. Since about one-half of the species belong to South America the 

 annexed synoptical table has been prepared to show the relationship 



of all of them. 



Synopsis of the Species of Tettigidea. 



A. Middle of the anterior margin of the pronotum at most angulate, but in nowise 

 provided with a spine. 

 b. Dorsum of pronotum furnished with prominent, or at least well-defined longi- 

 tudinal supplemental carinae. 

 c. Tegmina more or less conspicuously marked apically with a pallid dash, 

 band, or macula. 

 d. Frontal costa very prominent and strongly visible from above. 

 e. Vertex of the head but little advanced in front of the eyes. 

 /. Larger (length of 9 body 12 or more mm.). Anterior margin of the 

 pronotum broadly rounded. 

 g. Form somewhat slender, the wings and pronotal process extending 

 plainly beyond the tips of the hind femora. 

 h. Rugulae of the pronotum fairly prominent and quite regular 



(U. S., southeasterly) lateralis Say. 



hh. Rugulae of the pronotum faint, short, and irregular (southern 



Mexico) plagiata Morse. 



gg. Form more robust, the pronotum and wings abbreviated (U. S., 



east of the great plains) polymorpha Scudder. 



ff. Smaller (length of the 9 body 9.5-10 mm.). Wings fully developed 



(southern Mexico) parvula Morse. 



ee. Vertex of the head rather strongly advanced in front of the eyes. Front 

 margin of the pronotum obtusangulate (U. S. and Canada, east of 

 the plains) ... .parvipettnis Harris, parvipennis pennala Morse, and 

 medialis Hancock. 



