MARGARONIA. 269 



should remain in a separate genus. His arrangement is as 

 follows : Insecta LEPIDOPTERA ; Sect. NOCTURNA ; Fam. 

 Botydce. ; Gen. Petrophila ; Spec, fluviatilis. 



"P. argenteo-nivea,fuscescente adumbrata, alarum superiorum 

 strigis apicalibus angulatis, punctulis duabus intermediis, 

 lineisque baseos tribus subcommunibus fuscescentibus ; alarum 

 inferiorum plaga postica argenteo-iridescente, atro-maculata ; 

 abdomine fusco fasciato." 



The report in the " Zoological Journal " is almost the same 

 as the above ; but the Editor objects to the name Petrophila, 

 as preoccupied in Botany. 



GENUS MARGARONIA. (Margaroniidce.) 



Margaronia, Hiibner, Verz. bek. Schmett. p. 358 (1826?); 



Walker, List Lepid. Ins. Brit. Mus. xviii. p. 518 (1859); 



Moore, Lepid. Ceylon, iii. p. 324 (1886). 

 MargarodeS) Guenee, Spec. Gen. Lepid. Belt, et Pyr. p. 324 



(1854); Lederer, Wien. Ent. Mon. vii. p. 398 (1863); 



Meyrick, Trans. Ent. Soc. Lond. 1854, p. 296, nom. 



praocc. 



This is a widely distributed genus, chiefly tropical or sub- 

 tropical, including rather long-winged species, of a pearly-white 

 or grass-green colour, with hardly any markings. 



MARGARONIA ARACHNEALIS. 

 (Plate CLIIL, Fig. 3.) 



Margaronia arachnealis, Walker, List Lepid. Ins. Brit. Mus. 

 xviii. p. 527, no. 21 (1859). 



This Moth is found at Sierra Leone. 



" Very vivid green. Body beneath, and legs white or glau- 

 cous. Head white about the eyes. Palpi blackish toward the 

 tips, white beneath. Antennae pubescent. Abdomen with a 



