MELANENCHYTRAEUS SOLIFUGUS 



Explanation of the Plate. 

 Letters common to all figures. 



cd dorsal chaetae. 



cv ventral chaetae. 



ce brain. 



cu cuticle. 



h hypoderm. 



i intestine. 



in funnel. 



Ic cephalic lobe. 



ml longitudinal muscles. 



mt transversal muscles. 



ne nephridium. 



nv ventral ganglion chain. 



o mouth. 



ph pharynx. 



pn nephridial pore. 



se septum. 



Roman numerals indicate the order of the segments. 



Fig. I. — Melanenchytraeus solifugns ; magnified 9 : i. 



Fig. 2. — Brain and oesophageal ring ; reconstructed from a series of 



horizontal sections. In front of the brain the cephalic 



lobe shows a thickened hypoderm, with pigmented sense 



cells. 130 : I. 

 Fig. 3. — Sagittal section of the foremost part of the body (combined 



from a series of not perfectly sagittal sections), pc cephalic 



pore, V blood-vessel. 130 : i. 

 Fig. 4. — System of muscular bundles, which move the pharynx (w, pK) ; 



reconstruction ; the outer wall of the body is supposed 



to be transparent. Of internal organs, the central nerve 



system and the intestines only are drawn. 100 : i. 

 Fig. 5. — Section of the intestinal wall in the fore part of the body, 



with the chloragogene cells, chl\ ei ciliated intestinal 



epithelium, s blood lacunes. 380 : i. 

 Fig. 6. — Section of the epithelium of the pharynx ; between the 



epithelial cells there are branched pigment cells. 380 : i. 

 Fig. 7. — Transverse section of the body wall. 380 : i. 

 Fig. 8. — Section of the body wall in the clitellar segment ; from a 



specimen approaching maturity. 360 *. i. 

 Fig. 9. — Horizontal section of the cephalic lobe : cs sense cells. 



380 : I. 

 Fig. 10. — The four chaetae of a bundle in a posterior segment, isolated by 



means of caustic potash. 380 : i. 

 Fig. II. — Longitudinal vertical section of the 6th segment, showing the 



body cavity filled by unicellular glands ^/. 250 : i. 

 Fig. 12. — Longitudinal vertical section of the loth segment, showing 



the cluster of granulated cells, x, and the large dark 



pigmented cells, pg, which lie around the bundles of 



chaetae. 250 : i. 

 Fig. 13. — Longitudinal section through the ventral bundle of chaetae 



in a posterior segment. 250 : i. 

 Fig. 14. — Three lymph cells in the coelome. 380 : i. 



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