68 CATALOGUE OF 



side in the middle. Fore spines of the head 



and of the prothoraxshorl. N. tripus, Stal. Subg. Hom alocyphus. 

 b. Hind lobe of the protborax inflated, transversely 



impressed in the middle or a little before 



the middle, with a horn directed outward, 



slightly curved forward in the middle on 



each side, abruptly and much straightened 



behind the horns, lengthened more hind ward 



and then behind the middle abruptly lower 



and narrower, emarginated on the hind 



border. Femora equally thick. Fore tibia? 



rather thick; basal part slender; middle 



tibia? slightly thickened before the middle. 



Hind tibiae moderately thickened from the 



base to scarcely beyond the middle. N. 



clavipes, cinctiventris. ... Subg. Notocyrtus. 

 B. Head convex beneath near the base, with no 



tubercles. 



a. Head elevated above between the eyes. Hind 



lobe of the protborax somewhat elevated, 

 slightly depressed on the disk, with an obtuse 

 or rounded angle on each side. N. camelus, 

 fornicalus, triarcatus. - - Subg. Cystingonotus. 



b. Head not or hardly elevated above between the 



eyes. 

 * Spines of the head rather long. Hind lobe of 



the protborax compressed before the middle, 



with a short horn on each side in the middle ; 



this horn directed outward and slightly for- 

 ward; hind part elongated and rounded, 



depressed or impressed. N. vesiculosus, 



navolineatus, consimilis, pulvinatus, drome- 



darius, gibbus. ... Subg. Ceratocyphus. 



** Spines of the head short. Hind lobe of the 



protborax much elevated, with a rounded 



angle or excrescence on each side. Anterior 



tibia? slender, or very slightly thickened. 



Hind tibia? somewhat thickened, 

 f Hind lobe of the protborax very much inflated 



and elevated, forming a rounded angle on 



each side, gradually compressed and 



narrowed before these angles, abruptly 



sloping bindward. N. fungosus, inflatus. - Subg. Saccodekes. 

 tf Hind lobe of the prothorax less inflated and 



elevated, excavated lengthwise on the disk, 



with a short rounded excrescence ou each 



side. N. excavatus. - - -Subg. Collocyrtus. 



DICROTELIDA. 



Body long. Head elongated; its tip forming 

 an acute spine; ante-ocular part (excepting 

 the spine) shorter than the post-ocular, with 



