57i 



IVAR TRAGArDH 



forwards. Hind margin of epimera IV thickened, behind them a 

 transverse fold. 



7. Phyllhermannia dentata n. sp. — Figs. 45 — 52. 



Length 685 [i. Width 430 \i. Length of propodosoma 200 ^, width of 

 the same 250 \x. 



Colour dark chestnut brown. 



Texture exceedingly finely punctured on dorsal shield, sides of shield 

 and proterosoma distinctly punctured; dorsal side of legs reticulated, ventral 

 side punctured. 



Propodosoma (fig. 46) broader than long, sloping steeply downwards. 

 Rostrum blunt, set off by a fine but distinct transverse suture. The posterior 



margin is not coalesced with the hysterosoma but se- 

 parated from it by a narrow transverse strip of weak 

 chitin. At the posterolateral angles there is sharp, tri- 

 angular tooth which meets a similar tooth situated op- 

 posite to it at the anterior margin of the hysterosoma. 

 The pseudostigmata (fig. 46) are situated on two 

 low, rounded, cushion-shaped projections which leave a 

 narrow median furrow between them; on the median and 

 posterior slopes of this projections the punctures are 

 larger than on the rest of the propodosoma. The pseudo- 

 stigmata are straight, trumpet-shaped and point obliquely 

 outwards and backwards. The pseudostigmatic or- 

 gans are straight and point obliquely upwards and 

 backwards, slightly clavate and covered by minute hairs. 

 Interlamellar hairs inserted on a level with the 

 pseudostigmata, a little further apart than the distance 

 to the pseudostigmata, leaf-like, curved and quite hyalin 

 and hence difficult to see. The lamellar hairs are in- 

 serted far forwards where the rostral suture meets the lateral margin and are 

 of the same shape as the interlamellar hairs. Rostral hairs small and straight. 

 Hysterosoma (fig. 45) perfectly oval in outline, about Ve longer than 

 its width, evenly arched. It has 3 pairs of leaf-shaped marginal hairs round 

 the posterior margin, and two longitudinal rows of resp. 8 and 5 pairs of leaf- 

 shaped hairs (fig. 49). These are quite hyalin and difficult to see unless the 

 mite is dry, when they are whitish and very conspicuous. 



Mouthparts (figs. 47 and 48). The palps have 5 joints; basal joint 

 very short and ringshaped, 2nd joint longer than 3 — 5 and twice as wide, with 

 one small hair inserted subventrally and exteriorly near the middle; 3rd and 

 4th joints very short. I have only been able to see tactile hairs on joint 4 

 where there are two dorsal, straight hairs, almost as long as joint 5; 5th joint 

 tapering in the distal Va and rounded; it has ventrally and subterminally two 

 hairs, curved slightly forwards, at the end three long and straight hairs, dor- 

 sally in the proximal half two long hairs curved sHghtly forwards at the top, 

 and on the inner side near the top one hair, pointing obliquely forwards. 



Fig. 45. PhyUhei-niMtnia 



dentata n. sp. Dorsal view, 



lesfs not delineated. 



