LEPIDOPTEEA HETEROCERA. 861 



1. Meseka tristis. 



- Mas. Ferrugineo-fusca ; antenna nigra ; genua fulva; alee nigra - 

 cinerece, anticce obscuriores. Foem.? — Paliidior ; alee anticce 

 fascia suhapicali undulosa tenui cana. 



Male. Ferruginous-brown. Antennae black. Legs tawny. 

 Wings blackish gray ; fore wings a little darker and more opaque 

 than the hind wings. Length of the body 5 lines ; of the wings 12 

 lines. 



a. Venezuela. From Mr. Dysons collection. 



Female? Paler. Fore wings with a slender undulating 

 hoary band near the exterior border. Length of the body 1\ lines ; 

 of the wings 19 lines. 



a. Bogota. From Mr. Isaacson's collection. 



Genus 55. DASYCHIEA. 



Corpus saepissime robustum. Palpi porrecti, pilosi, caput fix 

 superantes ; articulus lus brevis ; 3us gracilis, 2i dimidio multo 

 brevior. Abdomen alas posticas non aut vix superans. Pedes 

 saepissime validi, antici pilis longis nonnunquam vestiti ; tibiae pos- 

 ticae calcaribus quatuor sat longis. Alae sat latae, saepissime lon- 

 giusculae ; anticae ad costam subconvexae. Mas. — Antennas latis- 

 sime pectinatae. Foem. — Antennae subpectinatae. 



Dasychira, Steph. 111. Brit. JSnt. Haust. ii. 58. 



Phalaena-Bombyx, p., Linn. ; Berk. ; Don, ; Stew. ; Turt. 



Phalaena, p., Deg. ; Wilkes. 



Bombyx, p , Fabr. ; Hubn. ; Haw. 



Laria, p., Schr. 



Dasychira, p., Hubn. 



Orgya, p., Ochs. ; Hubn.; Boisd. 



Oregyia, p., Meig. 



Body generally stout. Palpi porrect, pilose, extending very 

 little beyond the head ; first joint short ; third slender, much less 

 than half the length of the second. Abdomen not or hardly 

 extending beyond the hind wings. Leas generally stout ; fore legs 

 with very long hairs ; hind tibiae with four moderately long spurs. 

 Wings moderately broad, generally rather long. Fore wings very 

 slightly convex aiong the costa, hardly angular at the tips, oblique 



PART IV. I 



