320 THE CANADIAJSf ENTOMOLOGIST 



Antenna? as long as face, terete, first joint more than half the 

 length of second. Hind margin of pronotum shallowly and roundly 

 emarginate, tricarinate, lateral carinse convergingly curved, meeting 

 hind margin ; mesonotum long, tricarinate. Hind tibiae only slightly 

 longer than tarsi, one basal, one median and five apical spines; 

 spur cultrate, thick, convex on inner surface, apex with tooth, 

 hind edge without teeth. Tegmina at rest tectiform, sub-acinaci- 

 cate, radia not quite touching media, a short radial cross-vein 

 below first median sector, cubitus touching first median sector 

 near base, then bent at right angle. 



Type — A . fullawayi. 



This genus comes near to Tropidocephala, especially to such 

 forms as neoamhoinensis, but its quadrate vertex, long antennae 

 and tectiform tegmina at once distinguish it. 



Arcofacies fullawayi, sp. n. 



cf Light green or yellowish, a white median line from apex of 

 face to end of mesonotum bordered with black, antennae indistinctly 

 ringed with dark brown, a light band bordered with brown across 

 the lateral portions of pronotum, pygophor and apex of abdomen 

 brown; tegmina light brown over basal third, rest hyaline broadly 

 marked with black, the markings extending from hind margin over 

 middle of cubitus, base of first median sector, radial cross-vein, 

 along radia and subcosta to costal margin, and over media and 

 second median sector to apex; in the dark portion the \e\ns bear 

 white spots, a series of black spots along cubitus, semi-hyaline 

 mark along inner margin of clavus; apical edge of tegmen sinuous; 

 wings hyaline with brown veins. 



Pygophor slightly compressed, ovate, a small rounded projec- 

 tion on lower edges of sides, anal segment short, anus at apex, 

 below anus roundly emarginate with rounded corners projecting, 

 ^ but no spines; styles long, reaching to anal segment, base broadest 

 and flattened, tapering to fine apex which is slightly curved and 

 flattened. 



9 Styles (ovipositor sheath) compressed laterally above base. 



Length 2.5 mm.; tegmen 3 mm. 



Hah. — Manila (D. T. Fullaway, March; Muir, February). 



