604 IVAR TRÂGARDH 



lobes small, horn-sliaped, of the Laelaptinae type. Maxillary 

 plates short, withoiit fringes. 



Maxillary palpi (fig. 135). Joint I as usiuil compressée! 

 froiïi both sides, with thin ventral edge, which is more than 

 tmce as long as the dorsal one ; it bears, ventrally, at the ante- 

 rior angle, a long, finely pointed, hairy bristle, at the back 

 of which, a little externally, there is a small baro hair. Joint III 

 distally and dorsally with two stout bristles ; joint IV with 

 3 actile hairs of extraordinary length dorsally, placed one 

 behind the other, in large pores. Thèse hairs, which attain a 

 length equal to joints I to III together, are bent like a knee 

 downwards, so as to become nearly parallel, or only slightly 

 converging; jointV, the terminal joint, is conical, truncated 

 at the top, where it is plentifully provided with numerous 

 hairs ; ventrally it bears 3 long bristles, curved sliglitly upwards. 



Ventral side (fig. 134). 



Tritosternum (fig. 136) with the conical trunk rounded at 

 the top and slightly concave sides, not quite twice as long as it 

 is broad at the base ; the slip is narrow, lanceolate, with a fine 

 fringe, and gives off in the basai third two latéral slips, which 

 are half as long as the médian one. 



Sternalshield not fused with the endopodal shields as is 

 the case in most Uropodiîiae, and, as a matter of fact, in most 

 Parasitidae. It is distinctly demarcated from the endopoda'l 

 shields, which are completely fused with one another, and com- 

 pletely surrounds it. It is small, owing to the great size of the 

 génital aperture, which it surrounds at the anterior and the 

 latéral sides as a narrow, marginal shield. Its anterior side is 

 slightly convex, the anterior angles acute, and the latéral sides 

 hâve small sinuosities on a level with coxae II, III and IV 

 respectively. Tt extends forwards to a level with the anterior side 

 of coxae II , backwards as far as the middle of coxae IV, gra- 

 dually tapering ; it bears 3 pairs of hairs. In front of the sternal 

 shield there is a comparatively broad band which séparâtes 

 it from coxae T, and where one pairof hairs is inserted nearthe 



