302 



coloured to isabel-coloured. — Length (pregnant) 1520 ^. — 

 Remark tbat the stigma is ventral, the peritrema only vehtral and 

 lateral; no question of dorsal stigma and peritrema! The female 

 bas behind the dorsal shield much more (and smaller) hairs than 

 the deutonympha and the male. 



Fig. 42. Female. Ventral side. — The sternal shield is between 

 pyriform and circular. The jugular and intercoxal shields present. 

 Behind the sternal shield the transverse genital opening, sonieti- 

 mes scarcely, at other instances very easily observable. Behind 

 this split a small long-triangular genital shield! and then about 

 hundred small hairs, before the small, circular anal shield. 



The legs in the females are thicker than in the other stages. 

 All what is said of the hairs of the legs of the males, is appli- 

 cable here too. 



Habitat: Vespertilio murinus, V. dasycneme, Vesperugo noctula, 

 riecotus auritus. 



Patria : Netherlands, Germany, Frauce, Russia. 



28. Key to the species of Spiiiturnix v. Heyden. 



Dorsal shield of male subcircular; 



fingers of mandibles smooth ; 



female abd. broad and round . . Sp. euryalis (Can.) l ) 

 Dorsal shield of cf rhomboid; fin- 

 gers of mandibles denticulate ; 



9 abd. small, rounded . . . .2. 

 All the hairs of the ventral side 



of the legs small Sp. vespertilionis (L.) 



Some of the hairs of the outer row 



on the ventral side of the legs 



robust, planted and directed 



outward Sp. mystacinus (Klti.) 



1) Most probably this species does not belong to the genus in question. O. 



