276 B. H. Buxton, *. 



Part II. Tracheate Arachnids and Peripatus. 



B Bulge into saccule MS Muscles of saccule 



C Coeca of intestinal tract N Nerve 



CL Coxal labyrinth NM Modified nephridium 



CSL Central lumen of saccule NZ Nozzle 



CT Collecting tubule Outlet 



DSL Diverticulum of labyrinth sac i? Rostrum 



EP Epidermis S Saccule 



ET Exit tubule SAL Salivary gland 



FO Final outlet SL Labyrinth sac 



GN Ganglion SIG Slime gland 



H Heart SO Side outlet 



INT Intestine TR Trachea 



KS Sucking chamber TRS Tracheal stigmata 



LM Modified part of labyrinth V Vesicle 



LR Sheath VNC Ventral nerve cord 



31 Muscles 



Solifugae. 



Plate 27. 



Fig, 33. Paragaleodes barbarus. Oblique. 250 : 1. 



Showing the finely striated muscle fibres (MS) attached to 

 the periphery of the saccule {S). 



Fig. 34. Paragaleodes scalar is. Oblique. 225 : 1. 



Saccule with central lumen (CSL) and muscle fibres radiating 

 out from the periphery. 



Plate 28. 



Fig. 34a. Soljmga flaveseens. Sagittal. 250 : 1. 



Saccule with central lumen and radiating muscle fibres, much 

 finer than the ordinary somatic muscles (M). 



The tissue of the saccule is more compact than in 34, and the 

 saccule is more closely surrounded by somatic muscles. 



Fig. 34b. Galeodes arabs. Transverse. 250:1. 



Saccule with lumen. The tissues are more compact than in 34, 

 or 34a, and the short muscles radiating from the saccule are 



arranged in bundles. 



Plate 29. 



Fig. 35. Ammotrecha (Ale. sp. M.). Transverse. 200: 1. 



Showing the whole course of the collecting tubule (CT) from 

 the saccule (S) to the labyrinth sac (SL). 



