Gatty Marine Laboratory, St. Andrews. 143 
At the 10th foot (Pl. XII. fig. 21) the dorsal cirrus is 
still long, with a filamentous tip. It bears a branchial pro- 
cess of five divisions. The setigerous lobe forms a short 
cone, stiffened by two strong brown spines, the tips of which 
are free. ‘The ventral cirrus is a short lobate process pro- 
jecting from the thickened glandular mass internally. The 
dorsal bristles (Pl. XI. fig. 22) are simple winged forms 
rather abruptly pointed and with fine strie and serrations 
on the edges. The brush-shaped bristles are characterized 
by their comparatively small terminal spikes (Pl. XI. 
fig. 23). The ventral bristles (Pl. XI. fig. 24) have shafts 
enlarged at the distal ends, bevelled and marked by oblique 
striations. The terminal piece is somewhat short with a 
bifid tip and wings. 
At the 30th foot the setigerous region has two dark brown 
spines and six branchial filaments. 
About the 33rd foot the great bifid ventral hook is ob- 
served piercing the surface, and at the 40th three powerful 
spines project from the setigerous region. The hook, which 
continues to the posterior end, is dark blackish brown, with 
a main fang and a small process or point on the crown ~ 
(Pl. XI. fig. 24a). 
The great blackish-brown spines continue to the caudal 
region, where two only occur. In this region the large 
black ventral hook is present and has the same structure as 
in front. The dorsal bristles are very slender and elongate, 
and the brush-shaped forms are likewise long, though their 
structure does not differ. The jointed ventral bristles are 
similar to those in front, the tips being somewhat shorter. 
The ventral cirrus, like the dorsal, is comparatively long. 
This caudal region seemed to be in process of reproduction. 
It is difficult to institute a comparison with the bristles 
figured by Roule, since the style of plate adopted, viz. black 
and white, does not lend itself to minute detail. A general 
agreement is all that can be said. 
Accompanying the annelid were several fragments of 
a tough, pale, parchment-like tube minutely dotted under a 
lens. In structure it was minutely fibrillar, the result of 
fibrillation of the secretion. 
Eunicea labidognatha nuda of Ehlers, 
Ninoe Kinbergi, Ehlers. 
Habitat. Dredged in the ‘ Porcupine’ Expcdition of 1870, 
at Station 10, off Cape Finisterre, in 81 fathoms. Head 
forming a blunt cone, comparatively broad posteriorly and 
occasionally slightly grooved inferiorly. 
