270 



MK. B. F. CUMMINGS ON LICE 



the so-called paraglossse the front margin of the labium is a little- 

 concave in the middle and somewhat swollen on each side at 

 the base of each paraglossa. Each swollen patch carries several 

 small spiny hairs. First maxiUce : For the palpi, see text- 

 figure. The lobes are twice as long as broad. The inner surface 

 densely studded with small curved hooks, those at the distal 

 end longest. Mandibles : The right mandible is roughly quadri- 

 lateral, the two distal lateral angles being formed by two distinct 



Text-fie-ure 9. 



Boopia tarsata. Mouth-parts. X 300. 



CG. Ciliated groove; FF. fringed plate; MC. median cornu ; MP. main plate 

 of lyriform organ ; illfa;j9.^maxillary palpus ; P. paraglossa; FC. post, cornu; 

 PB. post, band; E. right mandible. 2^. Antenna. 



apices — one acuminate, the other broad and rounded — separated 

 from one another by a bay. The left is less powerful, with two 

 acuminate apices — one 'alongside the other, and one a little 

 longer than the other. Isojjogo^netric apjxiratus : The text- 

 figure shows the peculiarly complex framework on which this, 

 apparatus is held together. The main plate of the pharyngeal 

 sclerite bears a curious resemblance to the sternum of such a 



