598 IVAR TRÀGARDH 



Tectum large, rounded, with finely dentate edge (fig. 121) 

 posteriorly attached to the ventral side of the projecting 

 dorsal shield along twolines, which form an acute angle, and 

 where it thickens into a solid ridge. 



Gnathosoma. 



I hâve not been able to exactly discern the shape of the 

 epistoma. It appears to be of the typical shape, narrow 

 lanceolate, with finely fringed edges. 



Mandibles in both sexes of the shape peculiar to so many 

 Uropodinae, viz. the chela is attached to a neck-shaped 

 constriction at the top of the trunk and appears to be movea- 

 ble ; at the top of the trunk, dorsally, there is a transverse 

 ridge ; at the base of the upper, jaw, in the neck, there is a chi- 

 tinous apode ma. 



The chela (fig. 123) itself is of a shape charateristic of the 

 herbivorous Oribatidae, with low, but wide teeth which form 

 a chewing surface along the entire edge ; 3 large and 2 small 

 teeth in the upper jaw ; 2 large and 2 small ones in the lower 

 one. To judge fromtheir shape, itis, in my opinion, évident that 

 U.Kramerii is an herbivorous, or ratherlichenivorous, species. 



Hypostoma. — The maxillary lobes are placed above the 

 plates so as to become scarcely visible on ventral view, pro- 

 bably owing to the gnathosoma being compressed from both 

 sides so as to become almost circular on transversal section, 

 instead of oval, i. e. flattened dorso-ventrally as in the Para- 

 sitinae, for example. Consequently, they are placed on edge 

 and face one another with their inner (upper) surface ; they are 

 parallel in the basai half, and curved towards the middle at 

 the top, where they are bifurcated. They are to ail appearances 

 of the same shape in both sexes. 



The hj^ostomatic hairs of the f emale entirely agrée with 

 those of the deutonympha. 



The anterior and posterior pair of the maie (fig. 118) agrée 

 exactly with the corresponding pairs of the female ; the other 

 two, on the other hand, are of quite a différent shape. The 



