282 



MK. B. F. CUMMINGS ON LICE 



the large knob opioosite. On the left there is the usual sharp 

 basal process (present in the left mandible of most Mallophaga). 

 On both mandibles are transverse I'idges fewer than in T. heoni- 

 tragi. First Maxillce : Small lobes that call for no particular 

 remark. Labium : " Paraglossae " short and columnar, rounded 

 at the tips, firm outer surface. Five inwardly directed spines on 

 each distal end. No lobes, labial margin straight. Ten minute 

 hairs, set in large alveoli on the labium, and further hack tw?o 

 short hairs, one on each side. Isopoyometric Apjmratus: No 

 posterior cornua on the lyrifoi'm organ. Anterior cornua broad, 

 and almost as long as the "nucleus." 



Measurements {millimetre scale). 



