LEPIDOPTERA HETEROCERA. 
851 
more determinate white dots; exterior border with white points; 
reniform mark white-bordered, of the usual shape. Hind wings 
with an indistinct undulating exterior line. Length of the body 7 
lines ; of the wings 16 lines, 
Rio Janeiro. In Mr. Fry’s collection. 
Genus HYDARA. 
Mas . Corpus gracile. Fasciculus frontalis porrectus. Oculi 
extantes. Palpi porrecti, compressi, sublimbriati, longiusculi ; 
articulus 3us fusiformis, nudus, brevis. Antennae nudae. Pedes 
glabri. Alae angustae ; aniioae subfalcatae, costa subconvexa, raar- 
gine exteriore subdexo sat obliquo ; posticte valde breviores. 
Male. Body slender. Frontal tuft prominent. Eyes globose. 
Palpi porrect, compressed, slightly fringed, a little longer than the 
breadth of the head ; third joint fusiform, bare, not more than one- 
fourth of the length of the second. Antennae and legs smooth. 
Wings narrow. Fore wings subfalcate, slightly convex along the 
costa, slightly bent in the middle of the exterior border, which 
is rather oblique. Hind wings very much shorter than the fore 
wings. 
1. Hydara Biconalis. 
Mas. Ochracea ; pectus anticum albiclum ; abdomen cinereum ; 
alee anticce sckistacece, costa fasciisque tribus indeterminatis 
albo notatis , f asciis la et 2a interioribus obliquis , 3a margi- 
nalia margine exteriore vix , denticulato , reniformi e macula 
nigra ; posticce albido-cinerece, fascia media schistacea . 
Male. Ochraceous. Palpi beneath and fore part of the pectus 
whitish. Abdomen cinereous. Fore wings slaie-colour ; costa and 
three bands irregularly ochraceous and marked with white ; first 
and second bands interior, oblique ; third marginal ; exterior bor- 
der hardly denticulated ; reniform mark distinguished by a black 
spot. Hind wings whitish cinereous, with an irregular slaty middle 
band. Length ot the body 4? lines; of the wings 10 lines 
Rio Janeiro. In Mr. Fry’s collection. 
