Lep id op tera of th e A in azo ns. 21 



DipJitera, dont il difFere, dii reste, beaucoup pai* son 

 organisation, ainsi qu'ou pourra s'en convaincre par les 

 caracteres ci-dessus. Peut-etre devra-t-il se placer dans 

 les Notodontides, quoiqu'il ait bien Taspect d'une Noc- 

 tuelle." 



Walker adds : " This genus resembles some of the 

 Notodontidce, and, like some others, may be removed from 

 the Hij])0(irammidce, but does not well agree with the 

 characters of any other family of JVoctuites.''^ 



After reading the above, I find it very difficult to point 

 out characters by which Prometopus may readily be dis- 

 tinguished from Xylopliasia, but the discocellulars do 

 seem to be rather less angulated. 



5. Prometopus assuetus, n. sp. 



Extremely like Xylophasia sodalis, fi-om Japan. 

 Primaries whity-broAvn, clouded with greyish-brown and 

 with black markings, much as in X. rnrea, biit more 

 defined, a large additional subapical black spot near the 

 costa ; secondaries sericeous cupreous-brown, brightest 

 and darkest on external area; costal margin Avhite; fringe 

 whitish, spotted with purplish-brown ; body whity-brown ; 

 collar and tegulee rosy-greyish, traversed by arched black 

 lines ; undersurface coloured much as in A^ liepatica, 

 but even darker in colour, the blackish discal line still 

 more irregular; body whitish : expanse of wings 1 inch 

 6 lines. 



Boa Vista, Pio Purus, 12th September; Pupunhazinho, 

 Rio Jurua, 8th November, 1874; Rio Jutahi, 20th 

 January, 1875. 



6. Prometopus ordinarius, n. sp. 



INIost like X>/lophasia verhascoides, bitt, in marking, 

 still more like the species of Litho phone ; primaries pur- 

 plish-brown ; the veins, a number of longitudinal lines 

 between the veins, a number of oblique costal dashes, a 

 subcostal and an internal longitudinal streak, black, with 

 pale borders ; female, with two whitish lines on the disc, 

 towai'ds apex ; secondaries pearly-white, becoming brown- 

 ish towards costal and abdominal borders ; outer border 

 broadly dark brown, with cupreous lustre ; fringe whitish, 

 varied with brown; body j)ale red-broWn; collar pur])lish- 

 slate colour, traversed by ])ale lines ; tcgulie purplish, • 

 with black submarginal dotted line and reddish fringe ; 

 undersurface almost as in the preceding species, exhibit- 



