MORGAN HEBAKD 63 



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

 and a proximal fleck of chestnut-brown, the first bar extendiiig a bri(>f distance 

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

 elsewhere buff-yellow, becoming paler before the genicular area. Ext(>rnal 

 surface of cautlal femora colored as is chara(;teristic of the group; chestnut- 

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

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

 spurs white proximad and black distad. 



The female is very similarly colored, the dorsal surface being ]:»aler, chesdnit - 

 brown. 



In addition to the type and ailoty[)(', a single paratypic- male, 

 lieai'lng the same data, has been cxa:iiine<l. 



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



This divninutivc species is a member of the Alarginatus Group, 

 belonging to that section which includes the forms very closely 

 allied to M. (jraciliyes Scudder. 



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

 sex in the proportionately longer ami more slender furcida, 

 sniira-aiial plate wnh transverse median carina (sul;ob.solete 

 in soiioniacnsi;<) raised in a small l)ut ])rominent rounded la;.nella 

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

 plate which rounds evenly to the blunt a])ex (where, in sunumnen- 

 sis, there is a small but conspicuous suljapical tuborcleb 



In the female sex these species are almo.st inseparable. The 

 females oi fulfoni before us differ from those of sonoiHOctisis only 

 in being slightly more rolmst, with fastigium of vertex a trfiie 

 less protubei-ant. The females of the other closely related 

 species of this grou]) are likewise al:most indistinguishable. The 

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

 have sonontaensis, not only from north and south of Lagimitas, 

 California, ])ut from that locality as well. 



Type. — cf ; Lagunitas, Marin County, California. Augu.st 7, 

 11)21. (B. B. Fulton.) [Hcbard (\)llection, Type no. S32.] 



Size small, form slender; agreeing closely with Honoinartisis. Head nnicli as 

 in that sj)ecies. hlye distincth' more than twice as long as infra-ocular sulcus. 

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

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

 caudal margin broadly obtuse-angulate produced. Prosternal spine conical 

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



"* Named in honor of the collector of this insect, Mr. H. P. Fulton, whose 

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

 logical contributions. 



TKANS. AM. ENT. SOC, XLVIII. 



