34 Mr. A. G. Butler on three neio Moths. 



EXPLANATION OF PLATE II. 



Fig. 1. Luhomirskia baicalensis,Vdl\^&, s^. About one third of the natural 



size. Three specimens, viz. a, b, and c. From a photograph. 

 Fig. 2. The same. Skeletal spicule, lateral view and transverse section. 



Magnified 650 times, a, lateral view ; b, transverse section. 



(Mim. de I'Acad. Imp. d. Sc St. Petershourg, 7^ serie, t. xxvii. 



no. 6, Taf. ii. fig. 5, 6.) 



lY, — Descriptions of three new Species of Moths from the 

 Island ofNias. By A. G. Butlek, F.L.S., F.Z.S., &c. 



The three following species were added last year to the 

 National Collection ; two of them are especially interesting, 

 as affording an admirable instance of protective assimilation. 



Agaristida. 



Ophthalmis decipiens^ sp. n. 



Allied to 0. mollis ; grey-blue, with a faint greenish tinge ; 

 veins black ; the basal third of primaries crossed obliquely by 

 irregular black stripes, the last two of which form an <?-shaped 

 character from the subcostal nearly to the submedian vein ; an 

 oblique black-bordered oval marking immediately beyond the 

 cell ; a very irregular black band from costa to submedian 

 vein, where it runs inwards to join the oval marking ; the 

 veins between this band and the external border more broadly 

 black than on the rest of the wing ; external border black, 

 gradually narrowing from costa to external angle, and den- 

 tated internally upon the veins ; fringe white at apex and 

 external angle : secondaries with the basal fourth blackish ; 

 a large black spot over the end of the cell, beyond which the 

 veins are black; a broad and very irregular black external 

 border enclosing a nearly marginal series of elongated blue- 

 grey spots ; fringe white : body above black, spotted in front 

 with white, but the abdomen and sides of thorax banded with 

 pale bluish grey ; anus orange. Wings below nearly as above, 

 but the black markings much broader and the blue conse- 

 quently narrower ; all the wings with a large black spot over 

 the end of the cell : body orange ; legs striped, and base of 

 venter banded with black. Expanse of wings 51 millim. 



