90 OETHOPTEEA. 



Chloealtis abdominalis, Bruner, Canad. Ent. xvii. p. 10 (1885) 3 j McNeill, Proc. Dav. Acad. Nat. 



Sci. vi. p. 229 (1896) 4 ; Scudd. Cat. U.S. Orthopt. p. 25 (1889) 6 ; Scudd. & Cock. Proc. Dav. 



Acad. Nat. Sci. ix. p. 26 (1902) \ 

 Hab. Nokth America 1_6 , Kocky Mountain region from the far north to Central New 

 Mexico, and possibly also at suitable localities in Northern Mexico.] 



[NAPAIA, McNeill. 



Napaia, McNeill, Proc. Dav. Acad. Nat. Sci. vi. pp. 213, 214 (1897) ; Scudder, Cat. U.S. Orthopt. 



p. 25 (1900). 

 (Eonomus, Scudder, Proc. Amer. Acad. Arts & Sci. xxxv. pp. 47, 48 (1899) . 



This genus of locusts seems to be confined to the extreme south-western portion of 

 the United States, and will certainly be found to occur also across the international 

 boundary-line on Mexican soil. Only a single species is known at present. 



1. Napaia gracilis, McNeill. (Tab. T. figg. 2, 2 a, <$ .) 



Napaia gracilis, McNeill, Proc. Dav. Acad. Nat. Sci. vi. pp. 213, 214, t. 2. figg. 6, 6 a-d (1897) r ; 



Scudd. Cat. U.S. Orthopt. p. 25 (1900) \ 

 (Eonomus alta, Scudd. Proc. Amer. Acad. Arts & Sci. xxxv. pp. 47, 48 (1899) 3 . 



Hab. North America 1-3 , Los Angeles (Coquillette), Mt. Wilson, Altadena, California, 

 at an altitude of 2400 feet (Morse).] 



[HORESIDOTES, Scudder. 

 Horesidotes, Scudder, Proc. Amer. Acad. Arts & Sci. xxxv. p. 49 (1899). 



1. Horesidotes cinereus, Scudd. 



Horesidotes cinereus, Scudd. loc. cit. pp. 49, 50 (1899) l ; Cat. U.S. Orthopt. p. 26 (1900) \ 

 Hab. North America, Palm Springs, California (A. P. Morse). 

 It occurred on grasses in dry places in Palm Canon and West Canon.] 



MELANOTETTIX, gen. nov. 



Closely related to Stenobothrus, from which genus it differs in its members being exceptionally long-legged and 

 short-winged. It also approaches Gomphocerus in the structure of the pronotum, but lacks the clavate 

 antenna?. 



General build rather robust, the body evenly covered with a fine silken pubescence. Head rounded above, 

 moderately short back of the eyes, high, as broad above as below. Eyes nearly globular, prominent, 

 about as long as the cheeks below them. Vertex as wide as the shorter diameter of the eyes, the fastigium 

 depressed, its lateral walls meeting in front at slightly less than a right angle, gently sulcate, and with a 

 prominent median carina ; lateral foveolse triangular, not deeply impressed, longest above. Face gently 

 oblique and sinuate when viewed from the side, the frontal costa prominent, especially between the 

 antennae, its sides coarse and parallel to below the ocellus, but divergent beyond and becoming very 

 heavy at the base of the clypeus, sulcate below the antennae; lateral carinas of the face parallel on the 

 upper two-thirds, divergent below. Antenna? heavy, considerably longer than head and thorax together, 



