348 NEW TROPICAL AMERICAN ORTHOPTERA 



dead-leaf and lichenose type of formation and coloration; proximad being 

 mottled mars brown and buckthorn brown, with numerous veins and nervures 

 pencilled with blackish fuscous; distad more prout's brown, light ochraceous- 

 buiT and white, with a distal lichenose patch of pale cendre green. Proximad 

 there is almost no pattern, merely a blending of the tones, the stridulating 

 field having a mere intimation of a jade green wash; distad the pattern is bold 

 and blotchy, large and in general with the parts sharply defined from one an- 

 other, the blackish fuscous lining of many points deepening the general con- 

 trast. Exposed portion of wings similar to apical section of the tegmina. 



Length of body, 18.3 mm.; length of pronotal disk, 4.4; greatest (caudal)' 

 width of pronotal disk, 4.2; length of tegmen, 34; length of wing distad of teg- 

 men (closed), 8.5; length of caudal femur, 15. 



The type of this most interesting species is unique. We take 

 great pleasure in dedicating this very striking form to our friend 

 Mr. C. H. Lankester, who collected the type and kindly placed 

 it in our hands for study. 



Chloroscirtus discocercus new species (PI. XIX, figs. 1, 2, 3 and 4.) 



A very striking new species which can be readily distinguished 

 from the genotype, C. forceps Saussure and Zehntner, with speci- 

 mens of which it has been compared, by the relatively larger 

 tegmina, which also have the distal section proportionately 

 bi'oader, by the coarser tegminal areolation, the more deeply 

 V-emarginate disto-dorsal abdominal segment of the male, 

 which segment has the lateral projections of the plate developed 

 into lamellate processes, by the male cerci bearing on the ventral 

 surface, at the same point as the large tooth found in C. forceps, 

 a semicircular lamellate structure, by the male subgenital plate 

 being more produced and narrower than in forceps, with the 

 median emargination of the same much less extensive and the 

 lateral sections surrounding this less arcuate and tapering in 

 width distad to the styles. 



Type.— & ■ Cachi, Costa Rica. Elevation, 3500 feet. (C. H. 

 Lankester.) [Academy of Natural Sciences of Philadelphia, 

 Type no. 5349.] 



Size rather large: form as usual in the genus — that of a typical, relatively 

 elongate phaneropterid : surface somewhat shining. 



Head with occiput moderately declivent to the fastigium, faintly convex, 

 when seen from the dorsum regularly narrowing to the antennal scrobes; fas- 

 tigium when seen from the dorsum broad at base, regularly narrowing to its 

 middle, thence narrow and subequal distad to the narrowly rounded apex, 



