MISCELLANEOUS. 259 



5. NEREIS HIRSUTA. Plate XXXVI. Fig. 10. 



Length the sixteenth of an inch. Body roundish, about a fifth of 

 the length in thickness, consisting of seventeen or eighteen segments, ter- 

 minating by two knobs. Head with two articulated flexible antennae, 

 and two black eyes. 



The body totally villous. 



Swims swiftly with the antennae recurved. 



Three of these animals occurred in a vessel full of sea-water in the 

 beginning of May. 



PLATE XXXVI. 



FIG. 10. Nereis Jiirsuta. 



6. NEREIS PECTINATA The Feathered Nereis. Plate XXXVI. 

 Figs. 12, 13, 14, 15. 



This animal is probably allied to the Nereis, and may perhaps prove 

 an intermediate link to Amphitrite. This is only a conjecture, how- 

 ever, for it may be found something quite different, and only the larvae 

 of some more perfect creature. Therefore I introduce it here with great 

 diffidence. 



Length towards two lines ; breadth under half a line. An indenta- 

 tion seems to distinguish the head from the rest, but the segments of 

 the body are imperceptible, and the tail terminates in a fork. Ten- 

 tacula two, fringed with bristles. Four stumps appear towards the an- 

 terior, from which issue bristles half the length of the body. 



Colour to the eye white. 



This creature occurred among miscellaneous collections from the sea 

 in May, and survived about a month. 



PLATE XXXVI. 



FIG. 1 2. Nereis pectinata. the back, enlarged. 



13. Profile. 



14. Anterior extremity, enlarged. 



1 5. Posterior extremity, enlarged. 



