( 303 ) 



Two species, which differ essentially in the outline of the costal margin of the 

 hindwing, the margin being deeply sinnate beyond middle in D. mirahiUs, while it 

 is straight to beyond middle and then convex, without the deep sinus, in D. oUvacca. 



260. Degmaptera mirabilis. 



*(lll>a mirabilis Rothschild, I.e. ( ? , Khasia Hills ;— Mus. Tring) ; id., /..-. i. p. 6G4 (1894) ; id., /..-. 



iii. t. 13. f. 4(?) (I8'.I6). 

 Drgmaptera miviihilig, Hampson, I.e. fig. 240 (J) (Khasia Hills ; Sikhim) ; Dudg., Jnuni. IloinUi;/ 



N. II. Soc. xi. p. 407. n. 92a (1898) (" not seen "). 



cJ ? . The distal margin of both fore- and hindwing of the 6 is much more 

 strongly sinuate before hinder angle than in the ? . There is a jiecnliar fawn- 

 coloured band on the forewing in both sexes just beyond the cell, stopping at M- 

 or SMI The conspicuous black stigma has a minute transparent centre. Abdomen 

 with a dorsal central row of pale golden dots. 



(S. Tenth tergite (PI. XXIV. f. Hi) very broad, broadly sinuate, the two lobes 

 produced into sharp hooks which curve ventrad ; no sternite, but at each side of 

 the anal cone a hairy lumj) reminding one of a similar structure found in many 

 other Amb/i/iciiiae, (see .]rarui/il)a). Clasper (PI. XXXIII. f. 3) widest before end, 

 dorsal margin incrassate, bent inwards ; from beneath it jn-ojects a long sharjj sjjine ; 

 apex of clasper produced into a hook, which bears a tooth ; two small teeth at the 

 dorsal apical edge of the clasper ; harpe a ventral elongate piece of chitin, curved 

 upwards at end, resembling the rnnner of a sledge. Penis-sheath without armature- 



?. Vaginal plate (PI. XVII. f. 7) with the orifice (I') jjroximal, situated 

 upon a triangular smoothly chitinised plate, the proximal and lateral edges of which 

 are turned upwards ; postvaginal part of plate (pvp) short, broadly rounded, weak, 

 transversely wrinkled. 



JIab. North India. 



In the Tring Museum 1 cJ, 2 ? ? from: Khasia Hills, Assam, March ; ISiichim, 

 June (Pilcher). Also in the collection of Mons. Charles Oberthilr ; not seen in 

 other collections. 



261. Degmaptera olivacea. 



Ci/jju olivacea Rothschild, Xov. Zool. i. p. 70. t. 7. f. (la ((J) (1894) (^J, nou $ : N. Borneo;— 

 Mus. Tring) ; Hampson, l.r. iv. p. 453 (1890). 



6- What has been described as the ? of this species does not belong here, 

 but is that sex of Smerinthulus penersa. Tenth tergite (PI. XXIV. f. 17) very 

 [lecnliar, convex above, with a mesial groove, the sides turned downwards and 

 |irodnced into two truncate processes se]iarated from one another liy a ronmled 

 sinus ; apex deeply incised, the lobes narrow, pointed, curved downwards : no 

 sternite. (Jlasper (PI. XXXIIl. f. 4) broad, irregularly rounded ; dorsal margin 

 incrassate and turned inwards, ending in two teetli ; two folds run from this point 

 proxiraad, one ventral, the other subdorsal, a third fold parallel with the latter, 

 more proximal ; harpe represented by a sunken plate of chitin (//) which is rounded- 

 angnlate distally aimve and below ; its u[iper margin is proximally produced into 

 two slender, curved, i)ointed jirocesses which are directed bumd towards the jienis- 

 funnel (i'-k), which is dorsally open. No armature on penis-sheath. 



? . Not known. 



Hab. North Borneo. 



One i in tiic Tring Museum from Laliuk, British North Borneo, May 2ii. 1895 

 ((Jator). Not seen in otlier collections.] 



