( 196 ) 



to internal margin botli above and })elow. Abdomen of ^ with i)atrh on eiglitli 

 tergite, a distinct mesial line in both sexes. I'liderside deep chrome. 



S. The eighth sternite of the abdomen (PI. XXII. f. 27) slightly bisiiuiate, 

 the mesial portion almost straight, not distinctly lobed, its edge incrassate internally, 

 having, in a view from tlie ajiiial side, the appearance of being tnrned dorsad. 

 Harpe (PL XXXI. f. lOj with a h>ng linger-like distal jirocess (pf), which points 

 ventrad ; the mesial ridge [rm) consisting of two lamellae, irregularly dentate and 

 distally produced into a cone, the extreme end of which is turned ventrad. The 

 ])enis-sheath (PL XXX, f. 9) nearly shaped as in mariiU/cra, but tliere is a row of 

 teeth dorsally, and also some irregular teeth ventrally : from the sheath protrudes 

 a blunt, somewhat club-shaped "love-dagger." The tenth sternite (PI. XXIII. f. 9) 

 is lobed mesially, the lobe is rather narrow, almost truncate. Process of penis- 

 sheath of type-specimen suddenly curved ; normal in a second specimen from 

 N.W. India.' 



¥. Vaginal plate similar to that o{ maciili/'era, but the mesial lobe longer and 

 broader. 



Early stages not known. 



/fa/i. North-West India to Tenasserim. 



In the Tring Museum 7 c?c?, 3 ? ? from: Randakeit, N.W. India (Mansfield): 

 Sikhim ; Khasia Hills ; Jaintia Hills ; Tandong, Tenasserim, 40i)i) ft., May 

 (Fridistorfer). 



The Tenasserim individual is not well j)reserve(l ; it is much more pale yellow 

 tiiau ordinary sericeipennis, and has scarcely a trace of lines on the forewing. 



lf)7. Oxyambulyx placida (PI. IX. f. 3, <?). 



*Amlni/i/.rj)!ackh Moore, Proc. Zool. Sue. Lorn!, p. 390 (1888) (.Solon ;— Mus. Brit.) ; Bull., Ilhislr. 



Typ- Siierim. Lep. Eel. B. M. vii. p. 25. t. V^\. f. 1 (1889) ; Kirby, Cal. Lep. Hel. i. 070. n. 13 



(1892). 

 .1 ii.hitlyx siibxlrigilis, Hampson, in Blanf., Fauna Brit. Iml., Mollis i. p. 77. n. 10:5 (1892) (pattim) : 



Dudg., Jniini. Bomhay N. 11. Roe. xi. p. 408. n. 103 (1898) (partim ; Sikhim). 



f? ?. A very jiale species. Forewing similar to that of sericeipenni.-i, but first 

 iliscal line, which is the only distinct line, more distal, at R^ about midway between 

 cell and the broad yellowish proximal border of the submarglnal line ; line across 

 apex of cell in the same or nearly the same direction as the streak upon !{■'. A 

 snbbasal costal patch on forewing. Abdomen in <S with fine mesial line, no ]iatch 

 oil eighth tergite ; in ? without line. Underside of wings deep chrome (Ridgwny, 

 Nomencl. Colours vi. 6). 



There are apparently two subspecies : 



u. The pair from N.W. India in the British Museum is very pale grey on the 

 'forewing ; the line across apex of cell forms an obtuse angle with the line ujion 

 W ; the ronud snbbasal spot behind cell is small ; the eighth sternite of the i lias 

 a truncate-sinuate mesial lobe of which the angles are not distinctly toothed. 



b. The individuals from Sikhim have the snbbasal I'ound patch of the forewing, 

 behind cell, enlarged, the line across apex of cell more horizontal, and the angles of 

 the lobe of the eighth sternite produced. 



(?. Tenth sternite deeply sinuate, the two lobes rounded (PL XXIII. f. 8). 

 Eighth sternite mesially with a lobe which is or is not toothed at the angles. 

 Harpe broad (PL XXXI. f. 18) ; distal process {pv) rather short, somewhat 

 concave above, curved downward, obtusely pointed ; submesial process {pm) hollow, 



