Mr. A. G. Butler oa new Moths from Madagascar. 407 



10. Pterothysanus pictus, sp. n. 



Wings above snow-white ; primaries with the base and 

 costal border black, with three equidistant white spots between 

 the end of the cell and the apex ; a black rounded spot in the 

 cell and an angular almost 3-shaped black band from just 

 beyond it to the inner margin ; a very irregular band made 

 up of confluent black spots from the costa beyond the middle 

 to the second median vein, where it is completed by the 

 addition of an isolated spot and a dot of the same colour ; two 

 partly confluent subapical series of three black spots, the 

 outer series connected by a black line to the first submarginal 

 spot ; three unequal small spots also stand below the two 

 subapical series, and form an unequal triangle ; seven sub- 

 marginal black spots in a decreasing series ; nine marginal 

 black spots extending into the fringe and with a series of 

 rust-red spots between them : secondaries crossed at basal 

 third by three unequal black spots ; a somewhat falciform 

 series of five spots (the third and fourth being thrown much 

 forward out of line) about halfway between the first series and 

 the outer margin ; a submarginal series of seven black spots 

 and five marginal spots extending into the fringe and alter- 

 nating with rust-red spots, as on the primaries. Body as in 

 P. Jaticilia : secondaries below with the costa black ; other- 

 wise as above. Expanse of wings 60 millim. 



Elephanta Island. 



The red marginal spots in this species fully confirm my 

 view of the affinities of the Mascarene genus Caloschema, 

 Mab., which unfortunately was described almost simultane- 

 ously with my Helicomitra^ which it supersedes. 



L. — Descriptions of two neio Motlis from Madagascar. 

 By AiiTHUR G. Butler, F.L.S., F.Z.S., &c. 



The species here described were selected from a large series 

 of Lepidoptera collected by Mr. Thomas Waters in the 

 Betsileo country. 



Sphingidae. 



Amhidyx Watersii, sp. n. 



Allied to A, Grandidieri of Mabille. General colour above 



3i* 



