250 



Annals Entomological Society of America [Vol. X, 



segment, and general shape of the body, are of higher ordinal 

 value than the presence or absence of anal armature. 



The third tribe, Lepturoidini, is easily separable in the larval 

 stage (Fig. 4) from the other two tribes in the first subfamily 

 by having the submentum broad caudad, that is to say, the 



Fig. 4. 



Athous cucullatus (Say), a, dorsal aspect of larva; b, ventral aspect of 

 labium and maxillae; c, nasale and front; d, anterior aspect of same; 

 e, dorsal aspect of 9th abdominal segment; f, lateral aspect of 8th, 0th 

 and 10th abdominal segments; g, ventral aspect of 7th to 10th 

 abdominal segments; h, ventral aspect of left mandible. 



stipes-maxillce widely separated by the posterior part of the 

 submentum; by the absence of armature on the tenth abdominal 

 segment; and by having teeth on the inner surface of the 

 mandibles; while the adults have the cubital cross vein present. 



