HARMOTHOE MARPHYSJB. 341 



Light) are dotted over the lateral area, but they seem to be the end-organs in connection 

 with the numerous nerves. 



Feet, — The first foot has a strong spine and a bristle or two like the dorsal. 

 The second foot has a considerable number of short dorsal bristles, little tapered. 

 In the ventral division is a group of comparatively short, strong bristles, with short 

 spinous regions, and a somewhat elongated smooth portion at the tip which ends in a 

 probe-point. The length of the spinous region diminishes in the usual manner from 

 above downwards. 



Gradually the feet assume the complete form, many of the ventral bristles, indeed, 

 in the third foot being bifid, but the dorsal division, instead of becoming more prominent 

 as in the majority of the Polynoidee, increases very little. 



In the fully formed foot (Plate XXIX, fig. 16) the dorsal division is marked by a 

 long bluntly conical process bearing the spine, above which a short tuft of comparatively 

 few bristles projects from a small eminence. These bristles (Plate XXXIX, fig. 7, one 

 of the longer) are slightly curved, delicate, and translucent, with minute rows of spines. 

 The ventral division consists of a somewhat long and obliquely truncated foot, the spine 

 occurring at the upper angle in a pit between two fleshy lobes — a larger upper and a 

 smaller inferior. The bristles have moderately long shafts and short spinous regions. 

 The upper examples have more elongated spinous regions and simple tips (Plate 

 XXXIX, fig. 8), while a distinct secondary process is observed in the succeeding forms 

 (Plate XXXIX, figs. 9 and. 10, the latter being seen from the front). Toward the 

 ventral edge of the group the spinous regions become very short and the tip simple 

 (Plate XXXIX, fig. 11). In large examples from Polperro the dorsal edge of this division 

 of the foot is curiously wrinkled in the preparations. The spinous region of the ventral 

 bristles is often coated with parasitic growths. 



Posteriorly both dorsal and ventral bristles become more slender and elongate, the 

 tips of the ventral forming long hair-like processes. 



The dorsal cirri are pale brownish and pellucid, the caudal styles being darker. 

 The cirri are simple tapering processes, with sparsely distributed clavate cilia, which are 

 longest towards the base of the filiform tip. The ventral cirrus is somewhat tumid at the 

 base, and has a very few comparatively long clavate cilia. 



Reproduction. — The specimen procured in July at Guernsey carried nearly ripe ova. 

 Habits. — A single specimen occurred in each gallery of Marphysa sanguined, and the 

 examples from Polperro, " from the chinks of rocks," may have had a similar relationship. 

 When placed in an open vessel beside Marphysa it clung to the body of the latter near 

 the head. 



Baron de Saint-Joseph procured his Harmothoe picta, 1 an allied species, in the tube 

 of Lanice conchilega at Dinard, on the French coast. Another species (E. arenicolse) he 

 found clinging to a lobworm. It is curious that this also was a ripe female. His 

 figures of the bristles are not so strictly drawn as is necessary for accurate diagnosis, but 

 the species closely approaches H. spinifera and H. ljungmani. It is, however, larger, 

 viz. 25 mm. long. 



1 ' Ann. d. Sc. nat.' (7), v, p. 172, 1888. 



