58 THE COMMONER BUTTERFLIES. 



h^ Frontal process blunt, angulate. 



35. Zerene. 36. Eurymus. 

 F". Head insensibly merging into the frontal 

 process. 

 G'. Head with no marked projection. 



39. Nathalis, 



G". Head with an excessively long frontal 



projection. 



(Tribe Orange Tips.) 40. Anthocharis, 



W, A¥ing-cases scarcely protuberant below the 



general under surface of the body. 



(Tribe Whites.) 

 f '. Frontal process stout, no longer than broad. 



41. Pontia. 

 i\ Frontal process slender, very much longer 



than broad 42. Fieris, 



'D\ Front end with two projecting tubercles. 



(Subfamily S wallow-Tails.) 

 e\ Surface of body except the large projections 

 tolerably smooth, 

 f. Distinct ridges along the sides of abdomen 



above. 

 g\ Abdomen greatly expanded next the base. 



43. Laertias. 

 g\ Abdomen gently enlarged in the middle. 



44. I^jhidides. 

 t\ No ridges along sides of abdomen above. 



46. Etijiliaeades. 

 e\ Surface of body very much roughened. 



i\ Under surface of body, as seen from the 



side, hardly bent. . . 45. Jasoniades. 



i\ Under surface of body, as seen from the 



side, strongly bent. 



g'. Base of antennae with a distinct tubercle. 



47. Heraclides, 



