376 Alexander Peteunkevitch, Dugesiella hentzi (Girard). 



Explauation of flgures. 



All figures are photographs from life and represent diflferent momenta 

 in the life of DugesieUa hentzi. 



Plate 10. 



Fig. 1, A mature female in threatening attitude with fangs open. 



Fig. 2. A mature male a moment after he has struck at an insect. 

 The hooks on his front legs are well visible. 



Fig. 3. A male fastening the first threads of the spermweb to the 

 walls of his box. 



Fig. 4. A male testig the spermweb from below. 



Fig. 5. Another aspect of the same male a few moments later. 

 The web is being pushed upward as shown by its curvature. 



Fig. 6. The male creeping from under the spermweb over its semi- 

 circular edge. 



Plate 11. 



Figs. 6, 7, 8. The male drawing the sjjerm into his palpi by alter- 

 nately lowering and pressing the bulbs against the spermweb in the spot 

 over which the drop of sperm is hanging in the web. The drop appears 

 as a light grey spot. 



Fig. 9. First part of courtship in its last moment. The male is 

 already holding the fangs of the female by means of the hooks on his 

 front legs. 



Fig. 10. Second part of the courtship. The male pushes the female 

 before him and creeping at the same time under her , drums with the 

 patellas of his palpi on her sternum. 



Fig. 11. Coitus. The palpus introduced. All muscles of the female 

 in a State of relaxation. She rests heavily on the ground on the end of 

 her abdomen. 



Fig. 12. Coitus finished. Male and female cautiously backing away 

 from each other. Male with palpi lifted and front legs still stretched out 

 in front of him between the legs of the female. 



