392 Dr. J. L. Hancock's Further Studies of 



Genus Holoarcus, nov. 



Resembling Piezotettix, but differing in having all the margins of 

 the pronotal crest entire and arcuate, the summit sulcate, in the 

 almost obsolete lateral carin.-e, in the acute angled apex of posterior 

 process, and the strongly dilated hind femora bearing denticulate 

 margins. 



Including tlie type altinotu s her evf ith de&crihed, Fiezotct- 

 tix arcuatus, Haan, and Fiezotettix sulcatus, Stal, 



1. H. altinotus, sp. nov. (Plate XXII, fig. 2.) 



Allied to arcuatus, Haan. Body ochreous-ferruginous ; vertex 

 wide, about twice the width of one of the eyes, elevated considerably 

 higher than the eyes, tumid, with minute vestigial carinuhie on each 

 side next to the apices of the conoidal eyes ; frontal scutellum trian- 

 gular and open below, very slightly arcuate between the antennae ; 

 the antennae short filiform, as long as the face from vertex to 

 clyj)eate margin below, inserted barely below the eyes; posterior 

 ocelli placed distinctly in advance and little below the middle of 

 the eyes; maxillary 2)alpi having the last articles dilated, hirsute. 

 Pronotum strongly compresso-foliaceous, the whole crest punctate- 

 translucent when held against the light ; anteriorly advanced over 

 and beyond the head, the dorsal margin of crest presenting a highly 

 arcuate outline in profile but little depressed forward above the 

 lateral lobes, the summit sulcate, posteriorly the crest more sloping 

 than in front, the apex acute angulate and extending backwards 

 nearly to the apices of the posterior femora ; sides of pronotum 

 little rugose bearing light radiating reticulations ; the lateral carinse 

 ver}'' little expressed. Superior margins of anterior femora entire, 

 the inferior lightly bidentate ; middle femora elongate, margins 

 subentire ; posterior femora strongly dilated, the superior margin 

 strongly arcuate, from the middle backward tridentate, the ante- 

 genicular and genicular lobes acute, the external pagina above longi- 

 tudinally nodulose, bearing oblique rug« forward between the 

 carinse but scabrous and interrupted distally ; hind tibiae rather 

 stout, the margins armed with ten or eleven valid spines, the inner 

 margin having about six or seven spines ; first articles of the posterior 

 tarsi elongate, the third pulvilli distinctly longer than the second. 

 Valves of the female ovipositor having the superior glades constricted 

 at the middle, slender and denticulate. 



Entire length of body, female (same as pronotum), 13'5 mm. ; 

 posterior femora 9 mm. ; width 3 "5 mm, 



