164 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOFTERA) 



CC. Cerci armed with a more delicate (ventral) tooth, so that but Uttle 

 of this tooth is visible from above, (mesal portion of cercus very contrast- 

 ingly swollen), tooth situated at proximal base of this swelling, (distal 

 portion of cercus greatly depressed. Vertex distinctly ascending). 



D. Cerci with swollen mesal portion not attenuate elongate. (Eyes 

 unusually protuberant. Abdomen immaculate, with distal portion, 

 including cerci, a bright and striking yellow in life.) 



E. Swollen mesal portion of cerci with that portion above tooth 

 produced in an overhanging knob-like protuberance, distal portion 

 strongly produced with sides very weakly converging to broadly 

 rounded apex. 



F. Vertex with sides strongly divergent, greatest width equalling 

 that of proximal antennal joint. Convex callosity of lateral lobes 

 of pronotum broad. Cerci with swollen mesal portion bulbous, 

 ovate. Coloration not unusual. Size large, form robust and 

 rather elongate. Eyes large. Ventro-external margins of caudal 

 femora bearing t-wo to four spines. hygrophilus new species 



FF. Vertex with sides very weakly divergent, greatest width little 

 more than half that of proximal antennal joint. Convex callosity 

 of lateral lobes of pronotuni very narrow. Cerci with swollen 

 mesal portion brief, so that entire distal half of cercus is flattened. 

 Coloration unusual. 12 Size rather large, form rather slender, 

 Eyes normal. Ventro-external margins of caudal femora bearing 

 normally three and three spines. stictomerus new species 



EE. Cerci with swollen mesal portion not i)rodu('ed above tooth, 

 (this portion nearly circular), distal portion less strongly produced 

 with margins strongly converging to sharply rounded apex. (Vertex 

 with sides moderately divergent, greatest width about two-thirds 

 that of proximal antennal joint. Convex callosity of lateral lobes 

 broad. Size medium, form robust and rather truncate. Eyes large. 

 Ventro-exlernal margins of caudal femora bearing normally four and 

 five spines.) aigialus new species 



DD. Cerci with swoUen mesal portion attenuate, elongate ovate, 

 (distal portion with margins subparallel to broadly rounded apex.) 

 E. Vertex with greatest width very little over one-half that of prox- 

 imal antennal joint. Eyes of normal size but unusually protuberant. 

 F. Coloration solid, distinctive and vivid, abdomen solid shining 

 black, with meso-dorsal portion occasionally \-er}- dark brown. 

 (Cerci heavy, with swollen mesal portion broadly elongate ovate. 

 Size medium, form moderately robust. Convex callosity of lateral 

 lobes very narrow but distinct. Ventro-external margins of 

 caudal femora liearing normally three and three spines.) 



nigropleurum (Bruner) 

 FF. Coloration of head and pronotum trifasciate, abdomen not solid 

 shining l)lack. (Size .small to medium, form distinctly slender.) 



^^ The caudal femora are in life strikingly marked witli sj^ots and dots of 

 coral red. 



