1 86 EXTOMOLOGICAL XEWS [May, 'l8 



The species is reported as being comparatively abundant in 

 the type locaHty on the dates given and may be described as 

 follows : 



Stictolobus trilineatus sp. nov. (Plate XI). 



Xear Stictolobus siibulatits Say but differing in color, in 

 markings, in punctuation and slightly in wing venation. 



Bright green with three longitudinal white stripes ; posterior process 

 of pronotum castaneous, tip brown ; tegmina hyaline, bases slightly 

 punctate, veins broadly marked with Ijrown. tips fuscous ; thorax and 

 legs greenish-yellow ; under surface of abdomen yellow. 



Head yellow-green margined with lighter, impunctate, slightly stri- 

 ate; basal line adjoining prothorax much elevated in middle half; 

 prominent swelling above each ocellus; median sulcus faint; inferior 

 margin smooth ; eyes deep brown, prominent, extending laterally be- 

 yond the humeral angles ; ocelli prominent, reddish, a little nearer to 

 each other than to the ejes and situated on a line extending through 

 centers of eyes; clypeus long, extending as far below the inferior 

 margin of the face as its projection above the margin, hirsute at tip. 



Pronotum bright green, deeply and uniformly punctate, gradually 

 rounded in front with no indication of carinations on sides ; meto- 

 pidium wider than high, smooth callosities above eyes joining in nar- 

 row line in center ; humeral angles not prominent, rounded ; posterior 

 process gradually acuminate, deflexed, extending beyond tip of ab- 

 domen but not reaching apices of tegmina, sharply carinate above, 

 bright castaneous with tip brown ; semicircular impression on each 

 side of pronotum very pronounced: median carina not percurrent, be- 

 ginning at about middle of dorsal line and becoming prominent and 

 strong posteriorly ; three prominent greenish-white lines extending 

 longitudinally on the pronotum, one on the median dorsal line begin- 

 ning at base and extending to the point at about the middle of the 

 dorsum where the median carina begins, one on each side arising just 

 above the eye, extending over the shoulder and ending at the middle 

 of the lateral margin, all of these lines strongly punctate. 



Tegmina entirely free from pronotum, hyaline, base greenish and 

 slightly punctate, tip fuscous in external border: middle half of radial 

 and cubital veins broadly marked with brown, costal margin white ; tip 

 acute, middle apical cell triangular and petiolate, other apical cells 

 varying greatly within the species ; hind wings entirely hyaline, exter- 

 nal border wrinkled, apical cell usually but not always truncate. 



Sides and under surface of thorax greenish-yellow : pubescent ; legs 

 brownish-yellow, tibiae greenish, claws fuscous ; abdomen yellow, 

 under surface concolorous j-ellow. apical end tinged with greenish. 



Sternal plate of male acute, smooth, tip brown; lateral valves incon- 



