209. 

 AMPHISA WALKERANA. 



Order Lepidoptera. Fam. Tortricidse Leach. 



Type of the Genus Tortrix pectinana Hub. 

 Amphisa Nob. — Tortrix Hub. 



AntenncE remote, inserted close to the eyes (fig. 1) ; setaceous, 

 bipectinated, each joint producing 2 equal branches, gradually 

 lengthening to the middle, each branch irregularly pilose (la) j 

 or the joints producing a tuft of hair on each side (lb). 

 Maxilla- short, not longer than the Palpi (3). 

 Labial Palpi rather remote, porrected horizontally, considerably 

 longer than the head, thickly clothed with scales, subclavate (4), 

 triarticulate, basal joint small drooping, 2d long horizontal, ro- 

 bust, subclavate, 3d short, slender, slightly nutant (4 a and 4 b). 

 Head rather broad. Eyes small. Abdomen tufted at the apex. Wings 

 probably horizontal and forming a triangle when at rest ; superior 

 longer than the body, narrowed at the base, truncated obliquely, costal 

 margin slightly indented, discoidal cell open at the apex, the superior 

 half producing only 6 nervures, the apical one being furcate at the 

 extremity (9). Tibiae, anterior very short, posterior long, producing 

 2 spines at the apex and a pair at the middle. Tarsi 5-jointed. 

 CaterpiWsLXS with 16 feet? 



Walkebana Nob. 



Pale grayish ochre, sometimes fuscous. Antennae robust at the 

 base, each joint producing tufts of hairs of unequal length (lb). 

 Palpi hairy and less elongated than in the type (4 b). Head and 

 thorax subferruginous ; abdomen black, sprinkled with whitish 

 scales, the apex tufted with ochreous hairs. Superior wings pale, 

 sometimes dark gray, fuscous towards the base, with a large tri- 

 angular subferruginous spot broadest at the costa, upon which 

 is an oblique oblong gray spot and a small one at the apex : 

 inferior wings ochraceous spotted with fuscous, darkest at the 

 base. 



In the Cabinets of Mr. Walker and the Author. 



It frequently happens that very natural groups of Lepido- 

 ptera cannot be formed into genera by the same rules as the 

 other orders ; and as the caterpillars are frequently so very 



