306 



PSYCHE. 



[August 1S92. 



scribed. Here the head is broad and 

 rounded before, as in Limotettix, the 

 front is rather narrow, the sides of the 

 pronotum are of moderate length and 

 without a carina, and the elytra are 

 long with a well developed appendix. 



In Thamnotettix, as here accepted, 

 the head is broad, obtusely angled or 

 rounded before, front narrow, sides of 

 pronotum rather long and carinated ; 

 outer branch of the first sector of the 

 elytra evident ; appendix well developed. 

 In the twelve following species the 

 sides of the pronotum are of moderate 

 length, with a slender carina more or 

 less distinct and a little oblique, being 

 a little depressed anteriorly to the outer 

 corner of the eye : clitellarius Say. 

 eburatus V. D., *montanus V. D., 

 belli UhL, *semipullatus V. D., flavo- 

 capitatus V. D., *gilletti V. D., gem- 

 inatus V. D., fasciaticollis Stal, 

 melanogaster Prov., kennicotti UhL, 

 coquelletti V. D. 



In a few species the sides of the pro- 

 notum are shorter, sometimes much 

 shorter, with the carina obsolete or 

 nearly so. Here belong: fitchii V. D., 

 atropunctatus V. D., *smithi V. D., 

 decipiens Prov., laetus Uhl., *longi- 

 seta V. D. 



Th. subaeneus V. D. has the sides of 

 the pronotum quite strongly carinated, 

 and will be noticed below r under 

 Eutettix. 



In another group of allied species the 

 head is still broader, well rounded be- 

 fore and of almost equal length across 

 its whole width, thus recalling Idio- 



* The description of these species will soon appear. 



cerus ; the ocelli are plainly visible from 

 above ; the front is wide as in Limo- 

 tettix, sides of the pronotum of mode- 

 rate length and distinctly carinated; 

 elytra long, with the appendix well 

 developed, thin and subhyaline in tex- 

 ture, with the nervures indistinct. This 

 genus, for which I propose the name 

 Chlorotettix, includes insects larger 

 than we find in the other groups here 

 noticed, of a uniform green color of 

 some shade, occasionally tinged with 

 fulvous or marked with black on the 

 tergum. Pythoscopus unicolor Fitch 

 may be taken as the type with which 

 may be placed Pythoscopus tergatus 

 Fitch and the C. viridius and C. gal- 

 banatus described below, and also two 

 or three species as yet undescribed. 

 Dr. Fitch's two species have been 

 placed by Mr. Uhler in Grypotes, but 

 they want the incurved clypeus char- 

 acteristic of that genus, and in neura- 

 tion they approach Thamnotettix and 

 Limotettix, between which they may be 

 placed. 



Limotettix 1 have used for a group of 

 which three North American species 

 are known tome: striola Fall., paral- 

 lelus V. D. and Cicadula exitiosa Uhl. 

 The first of these, striola, seems to have 

 been intended by Sahlberg as the type 

 of his genus, parallelus is closely allied 

 to striola, but the position of exitiosa is 

 doubtful, and it may not belong here at 

 all. These agree in form very nearly 

 with Chlorotettix, but the sides of the 

 pronotum are short and terete and the 

 insects are smaller, more slender, and 

 with more pigmentation. 



