500 MR. A. G. BUTLER ON [NoV. 4, 



without palpi, -which would readily account for its being placed in the 

 Anthnphilida, though I fail to see any great similarity of this species 

 to Xanthoptera. H. obacerralis varies not a little in the ground- 

 colouring of its wings, the African specimens being usually (though 

 not always) more luteous towards the base than those from Ceylon. 



Herminiid^. 



77. Hydrillodes insignis, sp. n. 



Basal three fourths of primaries black, terminated by an elbowed 

 white stripe from costa to inner margin ; a broad cream-coloured 

 belt across the basal third ; external fourth sandy-brown, with two 

 costal apical black quadrate spots, connected with the outer one of 

 which is a > -shaped marking on external border, and below this 

 again three black marginal dots ; fringe cream-coloured ; secondaries 

 leaden-grey. Head and thorax black ; metathoracic tufts and base of 

 abdomen shining wbity -brown ; second to sixth abdominal segments 

 leaden-grey with whitish posterior edges ; anal tuft sordid testaceous ; 

 under surface yellowish, the upper surface markings almost obli- 

 terated. Expanse of wings 21 millim. 



Aden. 



Quite distinct in colouring from any species known to me ; it 

 somewbat resembles, both in colour and tlie general arrangement of 

 its markings, Ileterochroma leucographa, Snellen, from Sumatra. 



Ennychiid^,. 



78. Ennychia arabica, sp. n. 



Upper surface deep purplish brown, almost black ; primaries with 

 a submarginal cream-coloured stripe, slightly widening and incurved 

 towards the costa ; a dentated jet-black marginal stripe produced 

 by the confluence of a series of conical black spots ; fringes of all 

 the wings metallic leaden grey ; palpi and collar below white ; legs 

 below, excepting the tarsi, whitish ; wings nearly as above, excepting 

 that the black dentated marginal stripe of the primaries is replaced 

 by a slender black line, and consequently the submarginal stripe is 

 wider. Expanse of wings 15 millim. 



Aden. 



Not nearly allied to any known species. 



AsOPIID^. 



79. Desmia afflictalis, 



Desmia afflktalis, Guenee, Delt. et Pyral. p. 190, n. 125. 



Aden. 



Described from an Abyssinian example ; also found on the 

 western coast of Africa. 



80. Hymenia fascialis. 



Phalfena-Pyralis fascialis, Cramer, Pap. Exot. iv. pi. 398. fig. O 



(1782). 



Aden. 



This species seems almost cosmopolitan. I have not seen 



