276 



B. H. BüsTON, 



Part II. Tracheate Arachuids aud Peripatus. 



B Bulge into saccule 



C Coeca of intestinal traot 



CL Coxal labyrinth 



CSL Central lumen of saccule 



CT Collecting tubule 



DSL Diverticuium of labyrinth sac 



EP Epidermis 



ET Exit tubule 



FO Final outlet 



GN Ganglion 



H Heart 



IXT Intestine 



KS Sucking Chamber 



LM Modified part of labyrinth 



LR Sheath 



M Muscles 



MS Muscles of saccule 



^¥ Nerve 



NM Modified nephridium 



KZ Nozzle 



Outlet 



R ßostrum 



S Saccule 



SäL Salivary gland 



SL Labyrinth sac . 



SIG Slime gland 



SO Side outlet 



TR Trachea 



TRS Tracheal stigmata 



T' Vesicle 



VXG Ventral nerve cord 



Solifugae. 



Plate 27. 



Fig. 33. Paragalcodcs barhartis. Oblique. 

 Showing the finely striated muscl 

 the periphery of the saccule {S). 

 Fig. 34. Paragaleodes scalaris. Oblique. 225 : 1, 



Saccule with central lumen {CSL) and muscle fibres radiating 

 out from the periphery. 



250: 1. 



fibres {MS) attached 



to 



Plate 28. 



Fig. o4a. Solpuga flavescens. 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 arahs. 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 

 arranared in bundles. 



Plat. 



Fiff. 



: 29. 



M.). 



35. Änunotrcclia (Ale. sp. M.). Transverse. 200 : 1. 

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

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



