656 



MR. M. F. CUMMINOS ON LICE 



These processes occur nnd liave been described in many species of 

 Mallophaga, both Amblycevaaiid Ischnoceia (see Parti, and some 

 of Kellogg's figures, Proc. Cal. Acad. Sci. vol. vi., 1896). I find 

 them absent not only in Anatoectts, but in the genus IMdoscus, nov. 

 (see p. 664) and in Boopia tarsata — probably absent in other 

 Boopidfe as well. 



The lyi'iform organ and "glands "' are modified throughout the 

 genus, and resemble those of Ibidcecus figured on p. 670. The 

 text-figure shows their typical form. 



A. icterodes. — Both mandibles are very similar, the right 

 differing from the left in the acuteness of the apices of its two 

 branches. In the right there is a minute protuberance sub- 

 apically on the ventral branch and another lower down on the 

 cutting-edge. There aie a few transverse ridges distally on the 



Text-figure 10. 



Anatoeous ictfvodes. jVIorttli-parts. X ^00. Maxillary lobes not shown. 



M. right, and L. left mandibles. P. "paraglossa." AC. anterior cornu, and 

 PC. posterior cornu of lyriform organ. O. "gland." 



dorsal surface of the dorsal branch and a V-shaped groove, 

 the lower margin of which curves inwards and then down- 

 wards, showing a notch in its margin just before the latter 

 slopes inwards in a stiaight line. Lahium : This has clearly 

 demarcated lateral margins, formed of stronger chitin than 

 the immediately surrounding area. " Paraglossse " short, with 

 long terminal spines. Inner pair of lobes well defined. Iso- 

 pogometric a2}2)aratus : The two sprawling posterior cornua of 

 the lyriform organ run in a dorsal direction, one on each side 

 of the phaiynx. The anterior cornua are two short broad pro- 

 cesses, I'ounded in front. The Ivriform organ is small and thinlv 



