91 



side of the spiracles are always very small. The cremaster is long and 

 never has prominent lateral tubercles at its proximal end. The genera 

 of Vanessini may be separated by the following table : 



a. Cephalic prominences conical, with length and breadth approximately 

 equal ; dorso-lateral tubercles on the fourth abdominal segment al- 

 ways larger than the others. 



b. Dorso-lateral tubercles on abdominal segments 2-7 long and sharp, 

 spine-like, the length considerably greater than the breadth; 

 dorso-mesal tubercle absent on the second abdominal segment. 



Euvanessa Scudder. 



bb. Dorso-lateral tubercles on abdominal segments 2-7 not sharp and 



spine-like ; the length scarcely, if any, greater than the breadth ; 



dorso-mesal tubercle present on the second abdominal segment. 



c. Dorso-lateral tubercles on fourth abdominal segment at least 



twice the size of the others ; median elevation of the mesothorax 



a compressed carinate ridge and usually very prominent. 



Polygonia Hiibner. 



cc. Dorso-lateral tubercles on fourth abdominal segment very little 



larger than the others ; median elevation of the mesothorax 



pyramidal and not very prominent Aglais Dalman. 



aa. Cephalic prominences usually blunt, the length less than the breadth ; 



dorso-lateral tubercles on the fourth abdominal segment never 



larger than the others. 



b. Cephalic prominences broadly rounded ; scarcely elevated beyond 



the outline of the body; no distinct prominence on the median 



line of the mesothorax Junonia Hiibner. 



bb. Cephalic prominences distinctly elevated beyond the outline of 

 the body ; a distinct prominence on the median line of the meso- 

 thorax Vanessa Fabricius. 



The following species were examined : 

 Euvanessa antiopa Linnaeus 

 Polygonia intcrrogationis Fabricius, comma Harris, fannns Edwards, 



prognc Cramer 

 Aglais milberti Godart 

 Junonia cocnia Hiibner 

 Vanessa atalanta Linnaeus, huntera Fabricius, cardui Linnaeus 



Tribe ARGYNNINI 



The species included here resemble those of the preceding tribe, 

 excepting that the dorso-mesal row of tubercles is only present on a 

 few segments or is entirely wanting. The cremaster is short and 

 broad and never has a prominent projection on each side at the prox- 

 imal end. The genera of Argynnini may be separated by the following 

 table : 



