145 HOMOPTERA 



vex, sinuate near the middle, very little compressed laterally; metopidium vertical, broader than high; 

 median carina strongly percurrent; humeral angles large, broadly rounded; no suprahumerals; sides of 

 pronotum strongly, roughly, irregularly multicarinate and extended downward to almost entirely cover 

 the tegmina; dorsum graduall}- arcuate from top of crest to tip of posterior process which is heavy, tec- 

 tiform, gradually acute and reaches slightly beyond the tips of the tegmina. Tegmina not more than 

 one-fourth exposed, hyahne, basal and costal areas densely punctate and coriaceous; fave apical and two 

 discoidal cells; apical limbus narrow. Legs simple; tarsi about equal in length. 



Type concava Say. 



Geographical distribution : This is another North American genus which hke Eniylia con- 

 tains only a few species but an enormous number of individuals. 



1. ««cajirt Say, Narr. Long's Exped. App. 3ii (1824). — Pl. 8,fig.1 05. Canada, United States. 



extensa Walker, List Hom. B. M. 554. 20 (i85ij. 

 nigridorsum Goding, Cat. Memb. N. A. Sgg (1894). 

 giisea Buckton, Mon. Memb. 184 (1903). 

 vittata Buckton, Mon. Memb. i85 (igoSj. 



2. erecta Plummer, Memb. Mexico 379(1935). Mexico. 



3. modesta Uhler. List Hom. Colo. and New Mex. 472 (1872). Western U. S. 



bicinctura Goding, Ent. News III : 200 (1892). 



4. porrecta I'owler, B C. A. H : i3i. 2 (1896). Mexico. 



5. reticulata Van Duzee, Stud. N. A. Memb. io5. 2 (1908). United States. 



GENERA OF THE TRIBE TELAMONINI GODING 



I. Hind wings with four apical cells 



A. ProNotunt beariug a horn or crest 



I. Pronottim zvith a crest most ofwhich is behind humerals 



a. Crest more or less quadrangtilar , not stepped Telamona Fitch. 



aa. Crest not quadrangular, either overhanging, pyramidal, lobed or 

 stepped 



b. Crest overhaiiging in front Hei.onica Ball. 



bb. Crest not overhanging ; if extended forward the dorsal tnargin 

 lobed or stepped 

 c. Crest distinctly stepped, the anterior lobe high and rounding, 



the posterior low and quadrangular Heliria Stal. 



cc. Crest sinuate or weahly angulate 



d. Crest high, foliaceous, arisingfrom metopidium . . . Telonaca Ball. 



dd. Crest placed well back of metopidium Palonica BaU. 



2. Pronotum with an anterior horn arising from in front of humerals 



a. Horn porrect, extending forward and upward Thelia Amyot and Serville. 



aa. Horn erect, compressed laterally Glossonotus Butler. 



B. Pronotum without horn or angular crest 



1 . Pronotum low and convex Carynota Fitch. 



2. Proiiotum high and foliaceous 



a. Metopidium rounded posteriorly, without a carina Tropidarnis Fowler. 



aa. Metopidium upright, with a raised carina Archasia Stal. 



