BY WILLIAM A. HASWELL, M.A., B.SC. 295 



parapodia extend far in front of the head ; at their base, repre- 

 senting a tubercle, is a short globular protuberance with five 

 short papillDG. They are biramous, the notopodium however, being 

 very small. The neuropodium ends in a phylloid expansion and 

 possesses a number of short filiform appendages ; the compound 

 setae consist each of a straight peduncle serrated near the 

 extremity, and a curved terminal appendage, articulated with 

 the peduncle, and ending in a bifid cheliform apex. The noto- 

 podium has also a few filiform appendages ; its seta) are very 

 delicate and obscurely serrated. Just below the dorsal setco on 

 the dorsal aspect is a little button-like process. The ventral 

 cirrus of the first parapodium is longer than the rest and placed 

 at the base ; the rest are very short and situated towards the 

 middle of the ventral surface of the parapodium. The dorsal 

 cirri are short, and the scale-tubercles are usually also slightly 

 produced externally in the form of a cirriform appendage. The 

 elytra are imbricate, but do not nearly meet across the back. 

 They occur on every second segment; they are ovate, and 

 delicate, with a fringe of quadrifid appendages on the outer 

 border ; the subcuticular squames are thickly pigmented along 

 the inner border, the pigment being red in the preserved 

 specimens. 



Dredged at a depth of 15 fathoms in Port Molle. 



Explanation of Plates. "^^ 



Plate VI. 



Fig. 1. — Intestinal caecum of Antinoe 2^ r cedar a, seen from the 

 dorsal aspect, magnified about 40 diameters, a, 

 outline of intestine ; h, opening of the caecum into 

 the intestine. 

 ,, 2. — Grreen cells from the caeca of the Polynoina, X 500. 



* Through inadvertence, the numbers 6 and 7 have been repeated in the 

 plates of this volume, the plate here numbered 6 being in reality the eighth- 

 T 



