Lepidoptera of the Amazons. 75 



Nearly allied to H. ruhripalpis, Ciijpansa (juttilana, 

 and the scarcelj-difFering Ihjpeiiaria exponens. 



Plaxia, Guenee. 



140. Plaxia mormon. 



$ . Apistis mormon, Felder, Reise dcr Nov. Lep. iv. 

 pi. 98, fig. 16. 

 Uttary, Kio Purus, 30th September; Uru^aca, Rio 

 Jurua, 9th November; llio Juruti, near the mouth, 14th 

 November, 1874. 



The female is more uniform in tint and paler than the 

 male, its abdomen also is not red : the S]3ecies is allied to 

 1^. mac area. 



141. Plaxia maculigera, n. sp. 



Allied to the preceding; fuliginous-brown, striolated 

 Avith black and irrorated with pale lilac ; a black-edged 

 oblique lilac line beyond the middle from near the abdo- 

 minal margin of secondaries to near the apex of primai-ies, 

 the disc immediately beyond this line Avashed with lilac ; 

 traces of a sinuated " extrabasilar " brown line; primaries, 

 with a nearly-circular imequally-bifid bright orange spot, 

 cut by the second median branch ; costal margin ochra- 

 ceous; secondaries with an angular series of black dots 

 on the disc ; antennae, crest and margins of collar pale 

 brown; termination of abdomen and sides of terminal 

 segments ochraceous ; tarsi and venter sandy-yellowish ; 

 wings below vmiform sericeous greyish-brow^n, having 

 almost a greasy appearance, striolated \At\\ darker broAvn 

 and crossed by two parallel dark-grey lines ; primaries 

 "with ochreous costa : expanse of wings 2 inches 2 lines. 



$ . Serpa, 13th February, 1875. 



This species agrees in coloration with " TJiermesia " 

 scalena of Felder. 



Felder's " Thermesia'''' (?) infumaia, which is CAadently 

 a slight variety of Walker's '^^ Hyper naria'''' anisospila, 

 seems to me to agree with Hiibner's Apistis (the ty])e of 

 which is A. fcUea?'is) ; Plaxia snhducta and P. spiloleitca 

 of Walker may also be placed in the same genus ; they 

 are closely allied to //. anisospila ; Hypenaria metastigma 

 is evidently Hiibner's A. fellearis. 1 Avill not attempt to 

 decide whether Hypenaria and Apistis are sufficiently 



