﻿NORTH AMERICAN aVHINGIDiE. 141 



vein not more remote from the third [central) than from the first (disco-central) ; fourth 

 {posterior) very remote from the third (central). Hind wings with the exterior border 

 slightly excavated. 



The genus is divided in to several groups found for the most part in South America, 

 and as it is probable many of the individuals exist in the southern portion of our own 

 continent, the diagnoses of the South American groups will be given. 



SPECIES. 



21. Lycastus. — Hind wings rufo-ferruginous, with pale purple lines. 



Volatica (in note) new sp. — Hind wings reddish brown, with pale yellowish brown central baud. 

 (Brazil.) 



Group I. 



Head elongato-conical, acuminated. Fore wings slightly hooked at the tips, 

 undulating, and very oblique along the exterior border. Hind wings acuminated r 

 slightly excavated, and undulating, but not denticulated along the exterior border. 



No North American representatives described. 



Group II. 



Head conical, obtuse. Fore wings concave behind the tips, which are hooked and 

 acute, convex, and hardly emarginate from thence to the interior angle. Hind wings 

 slightly excavated near the interior angle, almost straight from thence to the tips, 

 which are acute. 



21. C. Lycastus. — Sphinx Lycastus Cramer, IV. 180, pi. 381, f. A. Oreus Licastus Hubn. Verz. Schmett, 

 136, 1465. Sphinx Parce Fair. Sp. Ins. II. 148, 42 ; Mant. Ins. II. 95, 46 ; Eat. Sjst. III. 1, 372, 

 50. Gmel. Syst. Nat. I. 5, 2382, 80. Calliomma Lycastus, Walker p. 110. 



Fawn color ; palpi ferruginous and thorax with two large triangular ferruginous patches. Abdomen 

 with dorsal brown spots, sometimes absent. Anterior wings luteo-fawn color, or grayish, glaucous, testa- 

 ceous or white, and sometimes varied with brown; a white spot at the base and discal silvery streak. 

 Posterior wing rufo-ferruginous ; a brown spot near the interior angle, with pale purple lines. 



In Cramer's figure the anterior wings are represented dark brown with two pale, somewhat roseate white 

 patches about the middle of costa, a larger one at the base of the inner margin and a small one about the 

 middle of the inner margin ; silvery dashes near the base, around the front costal spot and behind the 

 second and on the inner margin behind the last spot, with a curved brown line in a grayish space at 

 the tip. 



Geographical distribution. — South America, West Indies. 



Group III. 

 Head elongato-conical, obtuse. Fore wings slightly acuminated ; exterior border 

 almost straight along each side of an extremely obtuse angle, which is rather in front 

 of the middle. Hind wings rather deeply denticulated, especially toward the interior 

 angle, which is prominent. 



3U 



