Bruner : South American Tetrigid/E. 139 



niinatins in a pregcnicular tooth, the a\w\ at center also ]:)rovidcd with a 

 prominent tooth; hind tibia- somewhat enlarged apically, provided with 

 about six modcrateh' strong spines externally and seven internally; first 

 joint of the hind tarsi as long as the second and third coinbined. Valves 

 of the o\ipositor acuminate, very long and straight, the upper ones mod- 

 eratel\- heavy, serrate above; the lower pair much shorter and slenderer, 

 their inferior margin nearly smooth. 



Lophoscirtus gracilis Bruner. 



Tetiigidea gracilis Bruner, Locusts of Argentina, 1900, 17; Proc. U. S. Nat. Mus., 

 XXX, 1906, 616. 



Habitat. — The only specimen of this species known to the writer, the 

 type, was collected on a river steamer near the borders of Paraguay. It 

 is in his collection. 



Genus Plectronotus Morse. 



Plectronolus Morse, Biol. Centr.-Am., Orthopt., II, 1900, 14. — H.^ncock, Genera 

 Insectorum, fasc. 48, 1906, 69. 



While we have no reference of any representative of this genus having 



been discovered in South American territory it is quite as likely to occur 



there as in Costa Rica, from which country the only described species is 



known. 



Plectronotus scaber Morse. 



Plectronotus scaber Morse, Biol. Centr.-Am., Orthopt., II, 1900, 14, fig. — Hancock, 

 Genera Insectorum, fasc. 48, 1906, 69. 



Habitat. — So far only reported from Costa Rica, Central America. 



Apteropedon gen. nov. 



Related to both Batrachidea and Tettigidea, but falling in that section 

 of Hancock's synoptic table of genera "With the frontal costa very 

 narrowly sulcate" 7. (10), although the body is quite large and robust. 



Body entirely apterous, the posterior sinus of the lateral lobes of the 

 pronotum wanting. Head large, set into the front edge of the pronotum 

 to the eyes and covered above by the prominent and angulate front edge 

 of the pronotum, the spine of which extends forward nearly or quite as 

 far as the front edge of the fairly prominent eyes. Vertex a little wider 

 than one of the eyes, provided at the sides with inconspicuous indications 

 of carinae; the median carina present only as a starting point for the fairly 

 prominent frontal costa, which is narrowly but deeply sulcate. Ocelli 

 opposite the middle of the eyes; the antenna;, which are long and slender, 

 inserted barely below their lower edge, and composed of 17 or 18 joints, 



