( iiy ) 



Mesothoracic tou'ulac with a tlii:i miihlle line besides 



tlie dorsal border ...... q. 



q. Ground colour of forewing and thorax clayish 



lUO. 107. II. Jraxcki fmi\ canailcnsis. 

 Ground colour of forewing and thorax greyish white, 

 white side-spots of abdomen bordered witii black 

 all round . . . . . . . . Iii4. //. lihoceilnis. 



Ground colour as before, white side-spots of abdomen 



not bordered black above and below . 105. //. perelcgnns f. asell/is. 

 r. Parouychium without long lobes, black discal band 



of hiudwiug below absent or vestigial . . \h). II. htsritiosa. 



Paronychium with long lobes ; the band distinct ; 

 pale side-patches of abdomen not bordered with 



black below Ml). II. (jotiliiis. 



As before, the side-patches with black border below . s. 



i<t. Pale side-patches of abdomen bordered above by a 



broad black longitudinal band . . . 111. II. dnipi/eranim. 



The dorso-lateral black band not present l(i5. //. perclcgnn.i f. perelegans. 

 t. Long terminal spur of hindtibia two-thirds the length 



of the first tarsal segment . . . .110. //. pinastri. 



Long terminal spur of hindtibia less than lialf the 



length of the first tarsal segment ... u. 



u. Midtibia with spines ...... v. 



Midtibia without spines, or only with one or two at 



end IV. 



V. Forewing whitish grey in costal region, this area 



bordered by a black and brown basi-apical band 1 1 3. If. dolli. 

 Forewing more uniform in colour .... \\A. IT. seqiioiae. 



w. Abdomen with greyish white side-patches ; two lines 

 across apex of cell of forewing, obliijue apical 

 line and discal streaks very heavy . . .11-"). II. cras.sfstr/ga. 

 Abdomen with greyish white side-patches, markings 



of forewing very thin or ill-defined . . . \\f<. II. oberthiwri. 

 Abdomen with brownish grey side-patches, one line 

 across apex of cell of forewing (this line often 

 obliterated) ....... Ml. II. caliyineus. 



X. Mesothoracic tegnla with black mesial line . . ".)1. //. aurigutta. 



„ „ without „ „ . . )/. 



y. Forewing above greenish olive-butf .... !S'.). //. arllmri. 



„ „ blackish grey ..... 90. //. maiira. 



89. Hyloicus artliuri. 



*Sph;n.c arthiin RothscLild, Nov. Zoor.. iv. p. :i()7 n. 1. t. 7. f. 1 ( J") (1897) (La Paz ;— Mus.Tring). 



cj. Easily recognised by the peculiar greenish olive-buff colour of the npperside 

 of the head, thorax, and forewing. Spines of foretibia not very prominent (the only 

 specimen known has no middle and hind legs). Harpe broad (PI. XXXVIIL f. 2), 

 concave, and dentate. Membranaceous lobes protruding from the penis-sheath 

 more heavily denticulate than in the other species. 



