Mr. A. G. Butler on Madagascar Lepidoptera. 391 



51. Thalassodes glacialis, sp. n. 



Wings above glistening white, semihyaline ; primaries 

 crossed by two zigzag series of white- edged sap-green spots ; 

 the outer one upon the disk continued across the secondaries ; 

 costal margin of primaries yellowish : body white, palpi ferru- 

 ginous, antennas testaceous. Wings below tinted with pale 

 buff, especially the primaries, in which the costal margin is 

 also bright golden yellow : body below pale buff. Expanse 

 of wings 10 lines. 



The secondaries of this species are very slightly angulated ; 

 so that possibly it may eventually have to be placed with 

 other described species in a distinct genus. 



Acidaliidae. 

 52. Zanclopteryx puella, sp. n. 



Snow-white ; wings semitransparent, with opaline reflec- 

 tions : primaries very acuminate at apex, costal margin 

 golden buff; all the wings with a black dot at the end of the 

 cell, a series of black dots on the veins across the disk, a 

 greyish submarginal stripe, and a marginal series of black dots : 

 antennas, tips of palpi, and an elongated triangular spot at the 

 base of each of the first three segments of the abdomen golden 

 buff ; proboscis yellow : upper surface of tibia? of front legs 

 golden buff. Wings below with a small dot at the end of the 

 cell ; primaries with golden costal border, otherwise immacu- 

 late : body below white. Expanse of wings 1 inch 3 lines. 



In form and general appearance this species comes nearest 

 to Z. aculeataria. 



I have very little doubt that the genera Argyris and Anzata 

 will prove by breeding to be closely allied to Cilix and refe- 

 rable to the Drepanulidas ; they are, however, always placed 

 close to Zanclopteryx. 



Fidoniidse. 

 53. Panagra rachicera, sp. n. 

 Pale shining whity brown, with the centre of primaries and 

 the basal third of secondaries semihyaline white, limited exter- 

 nally by a dusky line from apex of primaries to abdominal 

 margin of secondaries ; the whole surface indistinctly striated 

 with pale brown and sparsely speckled with black : secondaries 

 with an irregular discal series of six black spots in pairs, the 

 two central ones largest. Below, secondaries washed with 

 sandy yellowish, the veins, costa of primaries, and the oblique 

 line (which is diffused) distinctly golden yellow : body below 

 creamy whitish. Expanse of wings 1 inch 6 lines. 



