272 B. H. Buxton, 



rig. 15b. Hapalopus pentaloris. Immature. Frontal. 250 : 1. 



Coxal gland on appendage III, A portion of the saccule witli 

 its central lumen (GSL), and collecting tubule (CT) leading 

 to the labyrinth (CL). 



Plate 15. 



Fig. 16. Ischnocolus. Transverse. 250 : 1. 

 Coxal gland on appendage V. 



A portion of the saccule with its central lumen (CSL) and 

 the collecting tubule (CT) leading to the labyrinth (CL). 

 Fig. 16a. Hcqxdopus peiitaloris. Immature. Frontal. 250 : 1. 



Coxal gland on appendage V. From the same specimen as 

 15b. The arrangement is precisely the same, but in 1 6a is on 

 appendage V, and in 15b on appendage III. 



Plate 16. 



Fig. 16b. Eurypelwa vagans. Young with mother. Frontal. 250:1. 

 Coxal gland on appendage V, with saccule, collecting tubule 

 and labyrinth all communicating. 



Fig. 17. Avicularia. Adult. Sagittal. 100:1. 

 Exit tubule and outlet on appendage III. 



Plate 17. 



Fig. 17a. Avicularia. Cocoon. Sagittal. 250:1. 



Exit tubule and outlet on appendage III. (CIH) Coecum of 

 appendage III. 

 Fig. 18. Avicularia. Cocoon. Transverse. 250 : 1. 



Exit tubule and outlet on appendage V. (CV) Coecum of 

 appendage V. 



Plate 18. 



Fig. 18a. Hapalopus pentaloris. Immature. Transverse. 250:1. 



Exit tubule on appendage V. 

 Fig. 18b. Eurypelma vagans. Cocoon. Sagittal. 250 : 1. 



Exit tubule and outlet on appendage V. 



Plate 19. 



Fig. 18c. Theraphosid from Biskra. Young. Transverse. 250:1. 

 Exit tubule on appendage V, with portions of the labyrinth 

 (^CL) and saccule (»S'j. Just before the exit tubule is reached 

 there is a vesicular swelling (V). 



Fig. 19. Isclinothele. Immature. Sagittal. 250:1. 



Coxal gland. The saccule (S) changes at (CT) into the long 

 straight tubule of the labyrinth running posteriorly and corre- 



