1916.J NATURAL SCIENCES OF PHILADELPHIA. 139 



the humeral angles, more pronounced in the female, 

 the protuberances usually paired and regular, but 

 occasionally varying in intensity. Median carina 

 of pronotum coarser, less distinct from the dorsal 

 surface of the pronotum. Caudal femora with ridges 

 of dorso-lateral face and external pagina more 

 strumose bolteri Hancock. 



Neotettix proavus new species. PI. XII, figs. 1, 2. 



The differential characters of this very striking species have been 

 summarized under the generic discussion and in the key for the 

 species. 



Type:9; Macon, Bibb County, Georgia. July 30-31, 1913. 

 (Rehn and Hebard.) [Hebard Collection, Type No. 11.] 



Description of Type. — Size rather large (for the genus); form 

 compressed; surface ruguloso-tuberculate. Head with the greatest 

 transverse width through the cheeks; median carina of the occiput 

 and fastigium distinct but not high, regularly arcuate into the line 

 of the face when seen from the side, transverse carinae of the fastigium 

 moderately arcuate, the fastigium about twice as wide as one of the 

 eyes, moderately produced cephalad of the same, surface of the 

 fastigium distinctly fossulate on each side near the eye; outline of 

 the face when seen from the side regularly arcuate into the fastigial 

 outline dorsad, very faintly and broadly arcuate between the paired 

 and median ocelli; frontal costa with the forks strongly diverging 

 ventrad to the antennal bases, thence subparallel to the median 

 ocellus, the interspace very broad, nearly one-half that of the fas- 

 tigium, scutellate, sulcate, very strongly so dorsad (fig. 2); eyes 

 moderately prominent, very faintly flattened; antennae short, not 

 equal to the depth of the head, twelve jointed. Pronotum strongly 

 compressed, in section acute tectate with a sublamellate crest, in 

 profile the crest is well arcuate to the humeral region, thence mod- 

 erately and regularly subarcuate declivent to the caudal extremity 

 of the pronotum, height of crest above humeral angle very slightly 

 greater than the depth from that point to the ventral angle of the 

 lateral lobes; cephalic margin of the pronotal disk obtuse-angulate 

 with the arms of the angle concave, this angle reaching cephalad over 

 the head only to the middle of the eyes ; cephalic carinae very slightly 

 converging cephalad, humeral angles very obtuse, dorso-lateral carinae 

 distinct, arcuate dorsad, regularly converging to the blunt, weakly 

 emarginate caudal apex of the pronotum; surface of the dorsum of the 

 pronotum with indications of longitudinal elevated ridges between the 

 shoulders; lateral lobes of the pronotum having only the ventral sinus 



