KEY TO THE GROUPS— CATEHPILLAR. 51 



g\ Third thoracic segment with no transverse 

 ridge above. 

 h\ Middle of third thoracic segment with- 

 out markings 44. Iphiclides. 



h^ Middle of third thoracic segment with 

 a }3air of eye-like spots. 

 i\ First abdominal segment with no 

 large bright patches above. 



45. Jasoniades, 

 i^ First abdominal segment with a pair 



of bright patches above, nearly as 

 large as the eye-like spots in front. 



46. Eiqjliceades. 

 g\ Third thoracic segment with a trans- 

 verse dorsal ridge ... 47. Heraclides. 



r. Hinder thoracic segments scarcely larger 

 than the succeeding segments. 



48. Papilio. 

 A^ Head and body separated by a strongly and abruptly 



strangled neck . . (Family Skippers.) 

 B'. Body comparatively stout ; upper half of head as 



seen from in front rounded or quad- 

 rangular. . . (Tribe Larger Skippers.) 

 c\ Head at least as high as broad, the highest point of 



each hemisphere lying within the 

 middle line of that hemisphere; 

 dorsal shield obvious. 

 d\ Papillae of body inconspicuous except from col- 

 oring, 49. E'pargyreus. 



d^ Papillae of body conspicuous, giving a granulat- 

 ed appearance 50. Thoryhes. 



c\ Head distinctly broader than high, the highest 



point of each hemisphere at or out- 

 side the middle line of that hemi- 



