274 MR. B. F. CUMMINGS ON LICE 



species to generic rank, in the opinion of most of the systematic- 

 workers in this Order. 



The following is a description : — 



External Form (text-fig. 11). Female. — Head: Preantennal 

 area quite short. ISTo frontal sinus, front margin straight or 



Text-fio'tire 11. 



TrieJiodeetes hemitragi, $ . X o5'5. 



very slightly concave, with a narrow marginal hand. Inferior 

 "hair-canal'' absent or obsolete. Temples very rounded and 

 swell outwards behind the eye, making the head a little broader 

 behind the antennae than in front. Dorsally, two occipital 



