188 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Plate X. 



Fig. 1. Sketch from micro-photograph of a " spinning- 

 foot " shewing all three kinds of setae, and two 

 " mucus " threads (m) entangled in the brushes. 



Fig. 2. Sketch from micro-photograph of a "weaving- 

 foot " shewing its peculiar, very finely serrated 

 setae, v. Ventral Lobe. d. Dorsal Lobe. 



Fig. 3. Diagram. Ventral view of lateral portion of 

 Panthalis, shewing arrangement of setae in a 

 " spinning-foot." To the left are shewn all three 

 kinds. The ventral and dorsal setae have been 

 removed from the second foot ; the dorsal " brush- 

 like " setae only are shewn in the third foot ; and 

 the position and form of the "spinning-gland" 

 (e) with threads issuing and carried away by the 

 " brush-like " setae (d), are seen in the 4th. 



Fig. 4. Sketch from micro-photograph of " spinning- 

 gland ' ' dissected out and partly uncoiled. Shewing 

 the strong ventral (a), and weaker dorsal (b) 

 acicules; also the stout median setae (c), and the 

 delicate brush-like setae (d). The latter will be 

 seen to emerge close to the mouth of the " spin- 

 ning-gland " (e), which has, however, got pulled 

 slightly out of position in dissection. 



Fig. 5. Sketch from micro-photograph of front part of 

 above more highly magnified. In it the " brush- 

 like " setae (d) can be distinctly traced passing by 

 the mouth of the " spinning-gland " (e). 



Fig. 6. Proboscis (lateral view) shewing the palps, which 

 are usually straight, but have curled up in dying. 

 The two portions, viz., the trunk (a) of Proboscis, 

 and the jaws (b), with long median tentacles (c), 

 the large fangs (d) and smaller teeth. (Much 

 enlarged.) 



