94 GENETYLLIS. 



process large, obliquely truncated below the notch, and extending beyond the ovato- 

 lanceolate ventral cirrus. Bristles comparatively long, slightly enlarged at the tip, and 

 with one or two curved and prominent spikes. 



Synonyms. 



1864. Phyllodoce vittata, Ehlers. Borstenw., i, p. 150, Taf. vi, figs. 7 — 14. 



1865. ,, „ Carrington. Annel. Southport., p. 5. 



Habitat. — Dredged in 100 fathoms in St. Magnus Bay, 1869 (Dr. J. Gr. Jeffreys). 



Head short and rounded in spirit ; eyes comparatively large ; tentacles and tentacular 

 cirri somewhat short. 



Body about 1 J inches in length, dotted with brownish pigment-grains on the dorsum 

 and on the adjacent anterior lamellae. Ventral surface pale. 



The typical foot (Plate LXVIII, figs. 10, 11 and 12) bears dorsally a considerable 

 broadly-ovate cirrus, its upper border never showing traces of angularity or truncation. 



The spinigerous process is large, obliquely truncated below the notch, and carries a 

 series of rather long slender bristles (Plate LXXVII, fig. 9) with a slight curvature 

 towards the distal end of the shaft, which is less dilated than usual and provided with one 

 or two large and various smaller spines on each side. The terminal blade is long, curved, 

 finely tapered, and serrated. 



The ventral cirrus is ovato-lanceolate, the tip remaining more or less blunt through- 

 out. It is shorter than the spinigerous process of the foot. 



There is some doubt as to the identity of this with Elders' form, which came from 

 Quarnero in the Adriatic, but until other and more complete examples are obtained it 

 may be provisionally placed under that species. 



This appears to differ from any other British Phyllodoce. 



The eyes are peculiarly large, head short and rounded, and the tentacular processes 

 short and thick. The tentacles at the tip of the snout are absent, so that this descrip- 

 tion applies to the tentacular cirri. Dorsum dotted over with brownish pigment-grains, 

 ventral surface pale. The anterior cirri also have some brownish grains. 



The dorsal cirri are all modifications of the leaf-shape, not showing any angular or 

 truncated border. The ventral cirrus is somewhat lanceolate, and rather shorter than the 

 bristle-papilla, which has a series of long and strong bristles, with very long and minutely 

 serrated tips, and two conspicuous spikes at the swollen end of the shaft. 



Grube states (1879) that the group to which this form (his B 2) belongs has on the 

 peristomial segment one tentacular cirrus ; on segment 2 — two tentacular cirri ; and on 

 segment 3 — one. 



Genus XXXV. — Genetyllis, Malmgren, 1865. 



Head rounded ovate, with two eyes of considerable size (as in Notophyllum) . The 

 four tentacles are about the same length as in the latter, and finely pointed. The 

 tentacular cirri have a similar shape, the two anterior being shorter than the posterior. 



Body flattened, linear, slightly narrowed anteriorly and more distinctly so posteriorly. 



