On an Australian Land Xemertine. 119 



Fig. 9. — Small j)ortion of a longitudinal vertical section 



through the skin and muscle-layers in the 



ventral region of the body (borax carmine). 



Drawn under Zeiss F, oc. 2. 



gl. c. Sub-epidermic gland-cells. 



nu. Nuclei scattered about between the inner ends 



of the epidermic cells. 

 0. m. Layer of oblique or diagonal muscle fibres. 

 (Other lettering as before). 

 Fig. ]0. — Small portion of a tangential longitudinal section 

 passing on the left through the layer of longitu- 

 dinal muscles, in the middle th^-ough the layer 

 of oblique (diagonal) muscles, and on the right 

 througli the layer of circular muscles. Drawn 

 under Zeiss D, oc. 2. 



(Lettering as before). 



Fig. 11. — Longitudinal section of an eye and optic ganglion. 



From a specimen stained with borax carmine. 



Drawn under Zeiss F, oc. 2. 

 o]). g. Optic ganglion. 

 Fig. 11a. — Transverse section of an eye, from a specimen 



stained with borax carmine. Drawn under Zeiss 



F, oc. 2. 



Plate IX. 

 Fig. 1 2. — Ventral view of a specimen from Walhalla preserved 

 in spirit, with the proboscis everted and torn 

 away from its anterior attachment. X 3. 

 a. Anus. 



a.' a.' Line along which the proboscis has been torn 



away from its anterior attachment. 

 e. g. Group of eyes. 



(Other lettering as before). 



Fig. 13. — Specimen with the proboscis retracted, dissected 



from the dorsal surface by slitting open the 



proboscis sheath longitudinally and pulling the 



contained proboscis to one side, x 3|. 



a. a. Anterior attachment of proboscis to proboscis 



sheath (compare Fig. 6, ni. y.) 

 p. a. Posterior attachment of proboscis (by its 



retractor muscle), to the proboscis sheath, 

 r. m. Retractor muscle of ])roboscis. 



K 2 



