356 EHOPALOCEKA. 



some Pamphilinoe. The cell of the primaries is usually short, and the discocel- 

 lulars in a straight line, more transverse than in the members of Section A ; the 

 lower discocellular is usually longer than the middle, the lower radial thus lying 

 nearer to the upper radial than to the median ; there is frequently a costal fold. 

 The hind legs are often furnished with a long tuft of hairs attached to the inside 

 of the proximal end of the tibiae ; this tuft, when the leg is pressed close to the 

 body, lies in a groove formed by the projecting portion of the metasternum over 

 the proximal end of the abdomen ; the hind tibiae always have two pairs of spurs 

 except in Pythonides amaryllis, Staud., and its immediate allies. The male geni- 

 talia have, for the most part, symmetrical harpes, but in a considerable number 

 they are asymmetrical, and many of these, perhaps, show a relationship to 

 Thanaos, in which an extreme degree of asymmetry is shown. 



In the following arrangement we have been obliged to diverge considerably from the 

 generic key elaborated by Mr. Watson. The number of forms not included by 

 him, which have now to be considered, renders some change necessary. We are far 

 from satisfied with the arrangement now adopted, which, treating of a limited fauna, is 

 very imperfect. Nearly every character is subject to a graduated change from the 

 extreme forms in which it appears, and it is only by the combination of a number of 

 these unstable features that some natural combinations can be brought together. A 

 formal key to the genera does not give at all satisfactory results, as strained interpre- 

 tations of unstable characters almost inevitably result. We therefore have not 

 attempted to do more than give a few leading headings as a help to distinguish the 

 genera. We may add that the examination of male characters for the purpose of 

 discriminating species and even genera seems to us to be of increasing importance, and 

 the value of these characters in complicated cases like the present is, we believe, likely 

 to be enhanced. 



The members of this section are distributed over the tropical and temperate portions 

 of nearly the whole world, Tropical America possessing the larger share. 



a. Antennae with a short terminal hook, the bent portion not more than half the 



length of the swollen club. 



a'. Secondaries of the male without a tuft of hair near the base of the costal margin : 

 subcostal nervure of the secondaries and its branch not swollen near their junction. 



ARTEUROTIA. 



Arteurotia, Butler & Druce, Cist. Ent. i. p. 112 (1872) ; Wats. P. Z. S. 1893, p. 45. 



This genus was described by Messrs. Butler and Druce from the type and only 

 species A. tractipennis. Several other species have since been described by M. Mabille 

 and placed in it ; but we doubt their being really congeneric. None of the latter 



