286 



THE INVERTEBRATA 



the first and consisting of a simple sac; and a single pair of slime 

 glands discharging on the oral papillae, made up of a much branched 

 secretory part and a large reservoir. The slime can be shot out and 

 entangles enemy and prey. 



Fig. 207. Peripatus capensis, S , dissected to show the internal organs, x 2. 

 After Balfour, an. anus; ant. preantenna; brn. supraoesophageal ganglia; 

 c.oes. circumoesophageal commissure ; cx.gl. enlarged coxal gland of last pair of 

 legs; m.g. mid gut; o.p. oral papilla; ph. pharynx; sal.gl. salivary gland; sl.gl. 

 slime gland; v.n.c. ventral nerve cord; i, 2, 10, appendages of the trunk 

 segments; 4, excretory tubule of the fourth segment; (^ op. male aperture. 



The nervous system (Fig. 207) consists of a pair of supraoesophageal 

 ganglia from which the preantennal nerves are given off, a pair of cir- 

 cumoesophageal commissures and two ventral cords which are widely 



