10 ARKIV FÖR ZOOLOGI. BAND 3. N:0 28. 



tween coxse III. It bears the usual three pairs of hairs and 

 lias near the middle line a pair of small, oval depressions, where 

 the cuticle is penetrated by small pores. 



The metasternum is triangulär (mt Text-fig. 4) divided in 

 two convex shields, separated from each other in the middle 

 and anteriorly from the sternum by a space of thin cuticle. 

 Their lateral angles are rounded, the posterior edges are strong 

 chitinous, wavy and coalesce to a short median projection 

 directed backwards ; they are provided Avith one pair of minute 

 hairs. 



Between the posterior edge of the metasternum and the 

 anterior edge of the epigynial and paragynial shields is the 

 genital aperture, a transverse split, situated between coxse III. 



The ejngyniwm is large, triangulär, along its base, behind 

 coxse IV wholly fused with the ventri-anal shield or epigastrium, 

 with the edges slightly concave, rounded anteriorly with a 

 small median incision, without any hairs; the top is interiorly 

 thickened, forming two bulbs, (Text-fig. 6.) 



The endogynium (Text-fig. 5, e) is connected with the me- 

 tasternal shields through a pair of chitinous pieces (p) and is 

 anteriorly provided with a median point. 



The paragynial shields (Text-fig. 4, pg) are elongated, trian- 

 gulär, separated from the metapodial shields and the epigy- 

 nium, only along their very narrow base, just behind coxae IV 

 fused together with the ventri-anal shield. The anterior edge 

 is strong chitinous, in the middle concave and interiorly thick- 

 ened (Text-fig. 7); the lateral angle is well rounded, the median 

 is sharply pointed. There is a transverse row of two hairs 

 and near the anterior, lateral angle opposite the lateral angle 

 of the metasternal shield about 10 exceedingly small and sharp, 

 almost perpendicular bristles and near the median angle three 

 hairs. The eggs are 0,67 mm. long and 0,45 mm. wide. 



The ventri-anal shield (Fig. 26, Pl. I) is rather scarcely 

 provided with small hairs; as above stated, it is anteriorly fused 

 together with the epigynial and paragynial shields; it covers 

 the whole median part of the belly and leaves only posteriorly a 

 narrow strip inside the marginal shield unprotected. The strip 

 bears two pairs of hairs. The anus is situated exactly as in 

 the male. 



The metapodial and peritrematic shields are of the same 

 shape as in the male. 



