Lepidojitera of tJie AmazoJis. 83 



161. Hydrias terranea, ii. sp. 



Pale reddish-brown, washed with dull greyish ; pri- 

 maries with a bisinuate discal series of black dots; fringe 

 with a paler basal line ; secondaries becoming whity- 

 brown at the base ; under surface greyish with the Aving- 

 veins vvhity-brown : expanse 1 inch. 



Serpa, 13th February, 1875. 



Genus OCHA, Walker. 



162. Ocha turpis, n. sp. 



Fuliginous brown ; primaries crossed by a central 

 angulated narrow white-edged chain-like band ; apical 

 area sprinkled sparsely with whitish scales ; a widely 

 zigzag submarginal pale line ; fringe dark with a series of 

 white points at the terminations of the veins ; secondaries 

 rather paler ; with a sinuous abbreviated apical sub- 

 marginal litura; fringe as in primaries; wings below pale 

 greyish-brown, sericeous ; fringe as above ; primaries with 

 a costal pale yellow spot near apex, and from below this 

 spot two short whitish squamose streaks ; outer border 

 rather narrowly whitish, bounded internally towards the 

 apex by a series of subconfluent spots rather darker than 

 the ground colour ; secondaries with three curved parallel 

 squamose Avhitish bands, the central one almost crossing 

 the wing, the others very short ; body below whity- 

 brown: expanse 1 inch. 



Rio Jurua, 7th November, 1874. 



163. Ocha exigua, n. sp. 



$ . Fuliginous brown, Avith the margins of the wings 

 paler ; primaries crossed by two parallel central elboAved 

 lines, the interval between Avhich is filled in Avith blackish- 

 brown above the median vein ; disc crossed by two parallel 

 inidulated broA\'n lines ; a submarginal series of black 

 spots folloAved by a marginal series of broAvn spots ; secon- 

 daries blackish at apex, crossed by a Avhite apical litura ; 

 fringe at apex broAvn-tipped ; Avings below grey, with pale 

 reddish-brown A-eins ; body pale reddish-brown : expanse 

 21 millimetres. 



$. Altogether paler; the markings, excepting the 

 blackish patch from the median to the subcostal A^ein 

 betAveen the central lines of primaries much less distinct : 

 expanse 22 millimetres. 



i. Mabidiry, Rio Purus, 30th September, 1874; 

 i. Boa vista, Rio Jutahi, 1st February, 1875. 



G 2 



