60 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



sufficiently defined to recognize by name, and it is certain that 

 monticola is a more ancient and more divergent, thoroughly 

 established form, the geographic connecting intermediates of 

 which may not exist to-day. At any rate it is the best policy to 

 consider the two of specific rank until we have the proof of other 

 relationship before us. 



Description of Type. — Size rather small (for the genus); surface smooth 

 but in general not polished. Head not elevated dorsad of the level of the 

 pronotal disk, the fastigium moderately declivent, narrowly rounding into 

 the line of the face which is slightly protuberant in the fastigial area, width 

 of the fastigium shghtly less than the width of one of the eyes; eyes in outhne 

 subovate with a quadrate tendency, their greatest dorso-ventral depth equal 

 to about two-thirds the infra-ocular depth of the genae, when seen from the 

 dorsum the eyes are moderately protuberant ; antennae greatly surpassing 

 the body length. Pronotum with the dorsum of the usual type, the narrowest 

 point of the disk at about the cephalic third, the lateral carinae continuously 

 indicated and regularly sigmoid, the greatest (caudal) width of the disk 

 contamed one and one-half times in the length of the same, cephalic margin 

 of the disk very faintly obtuse-angulate emarginate, caudal margin flattened 

 arcuate and well rounded laterad; lateral lobes with the greatest depth con- 

 tained about one and four-fifth times in the greatest dorsal length of the same> 

 cephalic margin of the lobes oblique-truncate, ventro-cephalic angle rounded 

 obtuse, ventral margin subtruncate with the usual ventro-caudal trend, 

 ventro-caudal angle well rounded, caudal margin oblique with a distinct and 

 moderately marked, though shallow, humeral sinus. Tegmina very briefly 

 surpassing the caudal margin of the pronotal disk, the proportion not more than 

 one-half the caudal width of the disk, the distal portion well rounded, the 

 whole strongly vaulted, the marginal field very narrow and subequal in width- 

 Wings vestigial. Abdomen with indications of median and lateral carinae; 

 disto-dorsal abdominal segment obtuse-angulate emarginate; sui)ra-anal 

 plate with the margins rectangulate, a distinct medio-longitudinal sulcus 

 present; cerci rather short, of a substyliform type, the apex slightly blunXed, 

 internal tooth disto-median in position, short, subuncinate; subgenital plate 

 with the distal margin rotundato-rectangula.e emarginate, styles quite brief. 

 Prosternal spines very short; mesosternal lobes slightly acute, the tips sub- 

 mammillate. Cephalic and median limbs rather short. Caudal femora 

 subequal to twice the length of the pronotal disk, very considerably inflated 

 proximad and relatively slender distad, ventro-external margin unarmed, 

 ventro-internal margins showing from two to four spines; caudal tibiae with 

 t'he principal internal distal spur not quite reaching the middle of the meta- 

 tarsus. 



Allotype. — 9 ; Same data as type. (Hebard Collection.) 



Description of Allotype. — Differing from the description of the type in the 

 following non-ambisexual characters. Tegmina minute, completely hidden 

 under the ])rou()tuni. Supra-anal plafc witli form more rounded and the 



