146 NEW NORTH AMERICAN MELANOPLI (oRTHOPTERA) 



CHLOROPLUS« new genus 



This striking monotypic genus is nearest Campylacamha, differ- 

 ing in the proportionately much larger head, larger eyes, shorter 

 antennae, more inflated prozona, more delicate wing venation, 

 less inflated cephalic and median femora, proportionately shorter 

 and more robust caudal femora and longer caudal tarsi. The 

 more inflated prozona, less decided pronotal sulci and more 

 delicate venation of the tegmina give the insect a smoother 

 general facies than any species of Campylacantha. 



Only in the genus Phoetaliotes of the North American forms of 

 the Melanopli is the head found to be similarly of disproportion- 

 ately large size to that of the body. That genus, however, is 

 clearly in no way closely related to Chloroplus. 



Genotype. — Chloroplus cactocaetes new species. 



Generic Characters. Head very large, longer than pronotum. 

 Eyes large, longer than genae. Antennae short and delicate, only 

 slightly longer than the depth of the head. Caudal margin of 

 pronotum angulate-produced. Distal portion of male abdomen 

 not enlarged, genitalia simple. Lateral margins of male sub- 

 genital plate straight. Prosternal spine conical. Caudal femora 

 short and robust. Caudal tarsi nearly half as long as caudal 

 tibiae. 



Chloroplus cactocaetes" new species (Plate VIII, fig. 10.) 



This insect is one of the most delicately colored and beautiful 



of the North American Melanopli. It is apparently widely 



separated from any other known form. 



Type. — cT ; Corpus Christi, Nueces County, Texas. July 29, 



1912. (Hebard.) [Hebard Collection, Type No. 475.] 



Size medium, form medium, slightly less slender than in Campylacantha 

 lamprotata Rehn and Hebard. Head large, exceptionally large when com- 

 pared with body bulk, length appreciably greater than that of pronotum. 

 Vertex much as in Campylacantha, sUghtly produced and bluntly rounded, 

 fastigium slightly broader and more concave than in C. lamprotata, frontal 

 costa distinctly wider, widest with lateral margins decided between antennae, 

 surface sUghtly depressed only at the median ocellus. Eyes very large and 

 prominent, much longer than cheeks. Antennae slender and hardly longer 

 than combined length of head and pronotum. Pronotum with dorsum and 

 dorso-lateral portion of prozona somewhat inflated, smooth, with sulci weak; 



* From x^<^pos = pale green, and o-n-Xof = armor. 



^ From KaKTos = cactus, and ot/<:7jr57s = inhabitant of. 



