EUNICIDAE 135 



wards. The dorsal cirrus also grows increasingly shorter till about the 7th foot, where 

 it is a digitiform process reaching to the tips of the bristles. It retains this form through- 

 out the rest of the body. Behind the 3rd foot the ventral cirrus is modified into a 

 glandular pad. 



The I St foot has a few simple capillary bristles and a number of curved hooded 

 bidentate crochets (Fig. 50, b) with a feeble pseudo-articulation. These are continued 

 to the 4th chaetiger (Fig. 50, c) in which a single broadly bilimbate capillary bristle 

 also occurs. The 5th foot has bilimbate capillary bristles only. 



At the loth foot there is a small dorsal group of comb chaetae (Fig. 50, d) with 

 numerous short closely set teeth, a number of the usual twisted bilimbate capillaries 

 (Fig. 50, e) with slender tips, and a pair of yellow hooded bidentate hooks (Fig. 50,/ 

 and g). In the posterior feet the comb chaetae seem to be absent and the capillary 

 bristles are narrower. 



The dental formula is as follows: 7 — 7 : 9 + 5 — 8 (Fig. 50, /?). The teeth and the 

 junction of the carriers are dark brown, but the plates are pale yellow. The under jaws 

 (Fig. 50, /) are delicate translucent structures, except for a pair of dark chitinous pieces 

 at the anterior end. 



Remarks. Chamberlin established the genus Leptoecia to include forms resembling 

 Hyalinoecia but without gills. 



The present species is near to Leptoecia abyssorum, Chamberlin (1919, p. 320), 

 collected at a depth of 2005 fathoms between the Galapagos and Peru. It differs from 

 Chamberlin 's species in that the curved anterior crochets are continued to the 4th 

 chaetiger and are feebly pseudo-compound: in L. abyssorum they are unjointed and 

 confined to the ist foot. Moreover, the number of teeth in the jaws is higher in 

 Chamberlin 's species. The only records of this genus are the present one and that of 

 Chamberlin. It appears to be abyssal. 



Sub-family LUMBRICONEREINAE, Grube 



Genus Lumbrinereis, Blainville 



Lumbrinereis magalhaensis, Kinberg. 



Gravier, 191 1, p. 78, pi. iii, figs. 35-36, with synonymy. 



St. 27. 15. iii. 26. West Cumberland Bay, South Georgia. 3-3 miles S 44° E of Jason Light, 

 no m. Gear DL. Bottom: mud and rock. Eighteen specimens. 



St. 29. 16. iii. 26. West Cumberland Bay, South Georgia. 5-9 miles S 51° W of Jason Light. 

 23 m. Gear DC. Bottom: mud and stones. One specimen. 



St. 30. 16. iii. 26. West Cumberland Bay, South Georgia. 2-8 miles S 24° W of Jason Light. 

 251m. Gear DLH. Bottom: mud and stones. One specimen. 



St. 39. 25. iii. 26. East Cumberland Bay, South Georgia. From 8 cables S 81° W of Merton 

 Rock to 1-3 miles N 7° E of Macmahon Rock. 179-235 m. Gear OTL. Bottom: grey mud. Two 

 specimens. 



