226 THE ENTOMOLOGIST. 



Three males and one female from Bir Victoria, March 5th, 

 1903. 



Xenobiston, gen. nov. 

 Fore wings ample ; costa straight, apex rounded, hind margin 

 long, obliquely curved, inner margin somewhat convex. Hind wings 

 with both angles rounded, hind marghi faintly indented beyond 

 cell, more noticeably in the female. Antennse of male broadly bi- 

 pectinated, the pectinations strongly ciliated ; of female shortly 

 bipectinated. Shoulders, patagia, thorax, and pectus densely and 

 roughly haired ; face smooth, prominent ; palpi quite short, rough- 

 haired, no joints visible ; tongue absent ; frenulum present, very fine ; 

 mid and hind tibiae with a pair of short terminal spines. Neuration : 

 fore wings, cell three-fifths of wing ; disocellular concave ; first median 

 nervule at two thirds, second close before third; radials normal, veins 

 7, 8 stalked from a little before end of cell, 9, 10 stalked, 9 anasto- 

 mosing with 8, 11 fi'ee. Huid wings, costal anastomosing with sub- 

 costal for half of cell ; ceil two-thirds of wing ; discocellular in- 

 agalate, 3 and 7 both just before angles of cell, vein 5 weak. 



Type. X. casta, sp. nov. 



The neuration is anomalous, but the genus seems to come 

 nearest to Erannis. Hubn., in which vein 5 of the hind wing is 

 also intermediate between a vein and a fold. 



Xenobiston casta, sp. nov. Figs. : 3, <y ; 4, ? . 

 Fore wings pearl-grey, the basal third white, the middle third 

 occupied by a flesh-coloured fascia, the lunulate margins of which are 

 slightly marked with dark scales ; the fascia projects outwards a little 

 above the median vein, containing there a whitish centred dark-edged 

 ocelloid cell-spot ; costa pale throughout, the fascia stopping short at 

 the subcostal vein ; fringe concolorous. Hind wings with the fascia 

 very obscurely marked in darker grey, externally pinkish. Under side 

 uniformly pearl-grey without markings. Head and thorax pure white ; 

 abdomen pearl-grey, towards the base tuiged with flesh-colour. Palpi 

 and pectus white ; legs tinged with pale grey ; antennae ferruginous. 

 Expanse of wings : male, 30 mm. ; female, 38 mm. 



A pair from Bir Victoria ; March 5th, 1903. The male quite 

 perfect, the female somewhat faded, and in consequence much 

 paler throughout. 



In addition to these the following species were also secured : — 



Euxoa spinifera, Hiib. — Three females and one female ; Bir 

 Victoria, March -Ith to 5th, 1903. Differing somewhat from the 

 ordinary form in having the claviform stigma rather shorter, 

 and not filled up with black. 



O.vicesta chahordis, Oberth. — One male ; Bir Victoria, March 

 4th, 1903. 



Cerocala insana, H.-S. — One male and two females; Bir 

 Victoria, March 5th, 1903. 



