342 Mr. A. G. Butler on Madagascar Lepidoplera. 



with slightly convex costa and outer margin and straight 

 abdominal margin ; costal vein extending to apex ; discoidal 

 cell extending to the middle of the wing ; subcostal with two 

 branches emitted from a long footstalk beyond the cell ; 

 discocellular long and angled ; lower discocellular short and 

 slightly elbowed ; median vein three-branched, the second 

 and third branches emitted from a very short footstalk ; sub- 

 median and internal veins as usual. Type Ejricausis lani- 

 gera, 



32. Ejncausis lanigera, sp. n. 



Wings bright orange, with black external borders : pri- 

 maries with four transverse black abbreviated dashes upon 

 the basal area ; two broader black dashes upon the apical half 

 of costa ; two black dashes on basal half of internal border, 

 and two more near the external angle ; external border di- 

 stinctly dcntated on its inner margin : secondaries with the 

 basal two fifths black, clothed at the base with ochreous 

 hair j outer border regularly and rather broadly black : head, 

 thorax, and anal tuft carmine ; abdomen velvety black. 

 Wings below paler orange than above, with black external 

 border, that of primaries emitting a subapical curved band 

 (at lower radial vein) , which runs inwards to the costa ; a 

 black spot near the base of costa, and a black patch at base 

 of interno-median area : secondaries with the interno-basal 

 area black : body below black, with the subanal segment 

 broadly fringed with carmine ; anus black, anal tuft carmine 

 as above. Expanse of wings 2 inches 5 lines. 



Three examples, two of which are in moderately good 

 condition, were sent home. 



Lithosiidse. 



Isoeropus, gen. nov. 



Allied to Dyplilebia, but with broader wings. Primaries 

 with the costal vein terminating at second third of costa ; 

 subcostal five-branched, the first two branches emitted before 

 the end of the cell and united by an oblique spur or veinlet to 

 the third branch, which is emitted from the end of the cell 

 and is trifurcate ; only one radial emitted from the end of the 

 cell, at the same point with the third subcostal branch ; disco- 

 cellular angulated ; median vein three-branched, the last two 

 branches emitted from a long footstalk. Secondaries with the 

 costal vein reaching to apex ; subcostal forking from the 

 costal at basal fourth, emitting its two branches from a long 

 footstalk beyond the end of the cell ; cell reaching to the 



