340 Annals of the Carnegie Museum. 



dd. Pronotum acutely granulose or spinose. 



c. Femora above not spinose. Middle tibiae smooth above. Teg- 

 mina equaling or passing the abdomen. Pronotum equally 

 densely granose. (Posterior femora heavier, the base strongly 



dilated) Brachyauchenus Brunner. 



ee. Femora above lengthily spinose. Middle tibiee above spined. 

 Tegmina not attaining the apex of the abdomen. Pronotum 

 furnished with dense acuminate granules. 



Charoparnops Dohrn. 

 cc. Genicular lobes of the posterior femora obtuse, or sometimes the internal 

 lobes spined. 

 d. Anterior femora below armed with three to four spines. 

 e. Tegmina and wings fully developed. 



/. Posterior tibiae spined above on both margins. 

 g. Middle tibice sulcate above. 



h. Intermediate tibiae above two-spined on the posterior 



margin. 



i. Anterior tibiae below the auditory grooves, chiefly 



in the male, more or less incrassate. Posterior 



femora on both sides provided with obtuse 



genicular lobes Gongrocnemis Redtenbacher. 



ii. Anterior tibiae not incrassate. Posterior femora on 

 the inner side provided with spined genicular 



lobes Anchiptolis Brunner. 



hh. Intermediate tibiae above three- or four-spined on the 

 posterior margin. (Coxae marked with black. 

 Spines of the femora entirely, or with the apex 

 black. Anal segment of male produced on both 

 sides into a tooth. Supra-anal lamina of male 

 rounded or quadrate, or callosed and involuted. 

 Ovipositor slender, straight) . . . Idiarthron Brunner. 

 gg. Middle tibiae above rounded, smooth. (Pronotum wide, 



densely granulose) Drepanoxiphus Brunner. 



ff. Posterior tibiae above entirely spineless on the outer margin. 



Enlhacanthodes Redtenbacher 

 ee. Tegmina lobiform. Wings wanting. 



/. Posterior tibiae unarmed above on the outer margin. Ovi- 

 positor short, straight, beyond the middle obliquely truncate. 



[Colombia and Mexico] Li paroscelis Stal. 



ff. Posterior tibiae provided above with several spines on the 

 outer margin. Ovipositor more or less arcuate, evenly 



tapering. [Galapagos Islands] Nesacia Scudder. 



dd. Anterior femora below without spines. (Pronotum somewhat 

 granoso-rugulose, the transverse sulci distinct. Tegmina not 

 reaching the middle of the abdomen, provided with fuscous 



areoles) Trichotetlix Stal. 



A A. Foveolae of the metasternum joined in a single orbicular fuirow or in a longi- 

 tudinal sulcus. 



