MORGAN HEBARD 63 



Dorsal surface of caudal femora hazel, with all of genicular areas, two bars 

 and a proximal fleck of chestnut-brown, the first bar extending a brief distance 

 on the internal surface, the second bar crossing the internal surface, which is 

 elsewhere buff-yellow, becoming paler before the genicular area. External 

 surface of caudal femora colored as is characteristic of the group; chestnut- 

 brown, with the rather narrow ventral portion buff-yellow; ventral surface 

 faintly tinged with orange. Caudal tibiae r ich glaucous-blue, spines black, 

 spurs white proximad and black distad. 



The female is very similarly colored, the dorsal surface being paler, chestnut - 

 brown. 



In addition to the type and allotype, a single paratypic male, 

 bearing the same data, has been examined. 



Melanoplus fultoni^new species (Plate III, figs. 11 and 12.) 



This diminutive species is a member of the Marginatus Group, 

 belonging to that section which includes the forms very closely 

 allied to M . gracilipes Scudder. 



It is nearest M. sonomaensis Caudell, differing in the male 

 sex in the proportionately longer and more slender furcula, 

 supra-anal plate with transverse median carina (subobsolete 

 in sonomaensis) raised in a small but prominent rounded lamella 

 on each side of the medio-longitudinal sulcus, and subgenital 

 plate which rounds evenly to the blunt apex (where, in sonomaen- 

 sis, there is a small but conspicuous subapical tubercle). 



In the female sex these species are almost inseparable. The 

 females of fultoni before us differ from those of sonomaensis only 

 in being slightly more robust, with fastigium of vertex a trflie 

 less protuberant. The females of the other closely related 

 species of this group are likewise almost indistinguishable. The 

 difficulty in the present case is aggravated by the fact that we 

 have sonomaensis, not only from north and south of Lagunitas, 

 California, but from that locality as well. 



Type. — cT ; Lagunitas, Marin County, California. August 7, 

 1921. (B. B. Fulton.) [Hebard Collection, Type no. 832.] 



Size small, form slender; agreeing closely with sonomaensis. Head much as 

 in that species. Eye distinctly more than twice as long as infra-ocular sulcus. 

 Pronotum as in sonomaensis and other closely related species; elongate, disk of 

 almost equal width throughout, median carina well defined and percurrent: 

 caudal margin broadly obtuse-angulate produced. Prosternal spine conical 

 with apex moderately blunt (varying from blunt to a condition in which the 



16 Named in honor of the collector of this insect, Mr. B. B. Fulton, whose 

 masterly "Tree Crickets of New York" is one of the finest of recent entomo- 

 logical contributions. 



TRANS. AM. ENT. SOC, XL VIII. 



