158 Mr. H. W. Bates on the Endomychida) of the Amazon Valley. 



spot towards the outer margin. Posterior wing undulated with darker 

 brown from the base to beyond the middle, where it is crossed obliquely 

 from margin to margin by a continuous, nearly straight band of seven 

 silvery-white spots. 



Exp. 2yL inch. 

 Sab, New Granada. In the Collection of W. C. Hewitson. 



5. Lymanopoda albomaculata, n. s. (Plate IX. fig. 6.) 

 Upperside rufous-brown near the base, darker brown beyond. 

 Underside rufous-brown. Anterior wing lighter towards the apex 

 and outer margin. A line of four minute white spots parallel to the 

 outer margin. Posterior wing lighter, minutely undulated throughout ; 

 crossed obliquely beyond the middle, from margin to margin nearly, by a 

 baud of seven detached spots (deviating from a straight line) of silvery 

 white. 



Exp. 2 inches. 

 Hab. New Granada. In the Collection of W. C. Hewitson. 



This genus, except in its most typical species, scarcely differs 

 from Pronophila. 



XIII. — On the Endomychidce of the Amazon Valley. 

 By H. W. Bates, Esq. 



Genus Cortnomaxtjs. 

 In the Transactions of the Entomological Society of London I have 

 commenced a scries of papers on the subject of the insect fauna of 

 the valley of the Amazons, the result of eleven years' research in that 

 region. They arc limited at present to the group of Rhopalocerous 

 or Diumal Lepidoptera, and, besides a detailed review of the genera 

 and species, will contain an investigation of the general question of 

 the nature and relations of the fauna, which that group of insects is 

 so well calculated to illustrate. I shall not be able, nor will it bo 

 necessary, to treat the whole, or any considerable number, of the insect 

 families in the same copious way ; it will be sufficient if I give from 

 time to time, as the materials become completed, shorter essays upon 

 detached families or smaller groups, communicating any facts that 

 I may have observed regarding their habits, and describing the new 

 species. In some groups, even of the favourite order Coleoptera, 

 this task will be surrounded with difficulties in consequence of no 

 recent monograph existing embodying in a connected form the 

 various memoirs on the subject, thus necessitating tedious research 

 for the already published descriptions in the bewildering maze of 

 entomological literature. The object of the present paper is to give 



