LEPIDOPTERA HETEROCERA. 37 



Mexico. 



Group 1. 



Corpus robustum. Proboscis brevis. Palpi brevissimi ; arti- 

 culus 3us minimus. Antennae simplices, sat validae, corporis dimidio 

 non longiores. Pedes validi ; tibiae posticae calcaribus parvis. Alae 

 angustae ; anticae apud costam rectae, apice rotundatae, margine ex- 

 teriore perobliquo. 



Body stout. Proboscis sbort. Palpi very short; third joint 

 very small. Antennae simple, rather stout, about half the length of 

 the body. Legs stout ; hind tibiae with four short spurs. Wings 

 narrow. Fore wings straight in front, rounded at the tips, very ob- 

 lique along the exterior border. 



7. DlPHTERA CAVILLATOR. 



Alba ; thorax nigro maculatus ; alee anticce lineis transversis obli- 

 quis undulosis interruptis duplicatis annulisque duobus con- 

 nexis discalibus nigris, disco ex parte cinerascente, ciliis nigro 

 guttatis ; posticce nigricantes, ciliis albis linea nigra. 



White. Thorax with black spots. Fore wings with black 

 transverse oblique undulating interrupted double lines, and with two 

 connected black discal ringlets ; disk partly grayish ; fringe with 

 black dots. Hind wings blackish ; border white, with a black line. 

 Length of the body 7 lines ; of the wings 18 lines. 



a. Mexico. Presented by E. Doubleday, Esq. 



South America. 



Group 1. 



Antennae graciles, corporis dimidio paullo longiores. 



Characters of the preceding group. Antennae slender, rather 

 more than half the length of the body. 



8. DlPHTERA ILLUDENS. 



Alba ; caput* palpi et thorax nigro maculata ; alee anticce nigro 

 conspersce et subfasciata?, litura guttaque discalibus albis. 



White. Head, palpi and thorax with black spots. Fore wings 

 with numerous black specks, some of which are confluent, and form 



E 



