276 



MR. B. F. CUMMINGS ON LICE 



and bifurcates, each branch entering a " gland " or basal piece. 

 The latter has a short posterior tendon attached to it. 



Text-fisfure 12. 



TricJiodectes liemitragi. Mouth-parts. X 166. Labium not shown. 

 L. Left mandible. R. Right mandible. X 120. 



JiP. Basal iirocess ; D. duct ; G-. " gland " ; K. knob ; JLO. lyriform organ ; 

 PC, MC. AC. posterior, median, and anterior cornua; QP. quadrangular 



])viicL'?s ; 1, 3, 3. apices. 



Measurements (millinietre scale), $ . 



Length of Antenna : — 



Segment 1 ^070 



„ 2 -100 



„ 3 -120 



Total -290 



Trichobectes HARRisojsri, sp. n. (Text-figs. 13-16.) 



Several specimens, male and female, collected on the White- 

 tailed Gnu [Connochcetes gnu Zimm.). In the shape of the 

 abdomen of the male, more particularly of the last segment 

 which is produced and has a deejD median bay, this new form 

 recalls Damalinia and 7\ forficula. Thei'e is, however, no frontal 

 sinus, the head being semicircular in front, and I consider its 

 nearest allies, therefore, to be T. forficula P. (from Cervus 



