92 



DISCOVERY REPORTS 



tubercles near the umbilicus. Prostomial peaks are present. The palps are papillated, 

 and the tentacles and cirri carry a few sparse papillae. The dorsal bristles are few in 

 number (four to six) and either smooth or very lightly pectinated. The ventral bristles 

 are short, rather stout, carry rows of spines and are clearly bidentate. 



Genus Lepidametria, Webster 

 The body is long and vermiform with between 60 and 150 segments and up to 50 

 pairs of elytra. The lateral tentacles are terminally inserted. The elytra are inserted on 

 segments 2, 4, 5, 7, 9 and on alternate segments up to between the 25th and 30th 

 chaetigers. Behind this the arrangement is irregular. The notopod is represented by an 

 aciculum and sometimes by a few bristles also. 



Lepidametria gigas (Johnson) (Fig. 8 a, b). 



Polyno'e gigas, Johnson, 1897, p. 172, pi. vii, figs. 33, 42, 42 a; pi. viii, figs. 48, 48 a, 48 b, 49. 

 Lepidametria gigas, Seidler, 1924, p. 145. 



Occurrence. St. WS 583 (i). 



Specific characters. The single specimen measures 70 mm. by 8 mm. including 

 the feet for 88 chaetigers. There are 48 pairs of large 

 elji:ra which completely cover the body. They are 

 mottled with patches of iron grey pigment. The body 

 itself has no colour. 



The head corresponds to Johnson's figure. It is broad 

 at the base and the anterior pair of eyes is placed 

 laterally at the widest part. The bases of the tentacles 

 are rather elongate. The tentacles, palps and tentacular 

 cirri all extend about an equal distance beyond the end 

 of the head. The ventral cirrus of the first chaetiger is 

 almost as long as the tentacular cirri. The elytra are 

 quite smooth and correspond to Johnson's figure. 

 According to Johnson the elytra are arranged as in 

 Halosydna up to the 33rd chaetiger, i.e. on 2, 4, 5, 7, 

 9. . .27, 28, 30, 31, 33 ; after that on alternate segments 

 up to the 49th chaetiger and then very irregularly. In 

 this specimen the arrangement is a little different. The 

 elytra are inserted on 2, 4, 5, 7, 9. . .29, 30, and from 

 then onwards on alternate segments to the end of the 

 body except in a few places where this regular arrange- 

 ment is interrupted by two or three elytra being attached 

 to consecutive segments. I have seen no asymmetrical segments with a cirrus on one 

 side and an elytron on the other. 



The notopod is represented by an aciculum and I see no bristles. The neuropod 

 carries a sheaf of stout bristles with frilled and expanded ends. The tips may be either 

 unidentate or bidentate and both types of bristle occur in the same foot, and also inter- 



Fig. 8. Lepidametria gigas. 



a. Upper bristle, first foot. 



b. Lower bristle from first foot. 



