88 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



rounded, while Burmeister's key leading through the text to 

 pachymeriis and dorsalis descril^es these angles as sharp. The 

 slender bodied glaher is found nowhere near South Carolina 

 and would not answer the description on account of the strongly 

 rounded character of the angles of the pronotum. In addition 

 Burmeister would doubtless have mentioned the very peculiar 

 cerci of gihhosus or the very slender and unusual form of glaber 

 if he had had either form before him. These features would not 

 be noteworthy in connection with the present species. 



This species stands ciuite apart from the other forms of the 

 genus, although it is a member of the glaber-calcaratus group. 

 It appears to be sort of a connecting hnk bridging the gap between 

 this rather aberrant section and the other more coherent units 

 of the genus. The relationship to the pachymerus and ameri- 

 canus groups is, however, more apparent than real, consisting 

 as it largely does of a similarity in the general form of the dorsum 

 of the pronotum. When we take the features of relationship 

 to glaher and calcaratus, however, the form of the lateral lobes 

 of the pronotum, the appreciable rounding of the lateral angles 

 of the disk of the same, the character of the male tegmina, i. e. 

 form and position, the form of the male cerci and the characters 

 of the distal caudal tibial spurs, we find the real affinity is strongly 

 in that direction. 



The form of the pronotum in the two adults before us is very 

 similar, the humeral angle, which is subobsolete in the male, 

 being weakly indicated in the female. The pronotal disk is 

 hardly constricted in form, the width at the cephalic third being 

 hardly less than that at the cephalic margin, the lateral margins 

 weakly diverging on the median third with the caudal third of 

 the disk subequal in width. The greatest width (caudal third) 

 of the disk is 49 ( 9 ) to 57 ( d" ) per cent of the total length of the 

 same. A faint but appreciable median carina is present on the 

 caudal half of the disk and the lateral angles of the same are 

 somewhat rounded although well defined. The cephafic margin 

 of the disk is very shallowly arcuate — or faintly angulate- 

 emarginate; caudal margin of the same moderately arcuate in 

 the female, approaching subtruncate in the male. The lateral 

 lobes have their greatest depth contained twice in the greatest 

 dorsal length of the same. 



