508 ARICIA ARMANDI. 



to is characteristic of A. foetida of the Mediterranean, as well as of a fragmentary form 

 from Malahide. 



The Aricia gramlandica 1 of the cruise of the ' Valorous ' appears to be a variety of this 

 species. 



6. Aricia Armandi, 2 n. s. Plate LXXXVII, figs. 19 and 20— feet. 



Specific Characters.— Snout somewhat truncated (?). Body, so far as known, of the 

 typical outline; anterior region of nineteen segments, and the ventral spinous areas are 

 pale yellow. Branchiae arise on the fifth foot. Foot differs from A. Guvieri in the 

 absence of the cirrus between the dorsal and ventral divisions, and in the great length 

 of the papilla in the ventral rows. From A. Kupfferi and A. norvegica the species 

 diverges in the number of the anterior segments, and in the form and arrangement of 

 the papilla behind the ventral division of the foot, and on the ventral surface of certain 

 segments. 



Habitat. — Dredged in St. Magnus Bay, Shetland, in eighty fathoms, by Dr. Gwyn 

 Jeffreys in 1868. 



The specimen is in a softened and fragmentary condition, so that the condition of 

 the head is unsatisfactory. The snout is truncated, the tip of the usual cone being 

 absent, but whether this is natural or due to injury is uncertain. 



The anterior region of the body, which is of comparatively small size, consists of 

 nineteen segments, though the softened state of the parts gives insecurity as to a segment 

 in front. The ventral spinous areas are of a pale yellow hue. The general outline is of 

 the normal type, but only the anterior region and a portion of the succeeding about the 

 same length are present. The branchiae appear to arise on the fifth foot. The long 

 papillae are continued a short distance downward at the seventeenth foot and pass nearer 

 the middle line on the eighteenth, nineteenth, and twentieth feet, diminishing again on 

 the succeeding two or three feet, the region thus having a remarkably hirsute aspect from 

 their comparatively great length. 



The first foot is injured dorsally, only a tuft of long, slender, serrated bristles 

 remaining. The ventral division has a short row of spine-like stumps of the moderately 

 strong serrated bristles with the tips smoothly rounded, whilst the edge of the bristle 

 beneath is faintly serrated. A few tapering serrated bristles of moderate length are 

 likewise present along the row. At the ninth foot the dorsal cirrus seems to be of 

 moderate length, and the dorsal bristles are long, serrated (camerated), and tapered. 

 The upper process of the ventral division is longer than the others and cirrus-like, 

 a considerable interval occurring between it and the dorsal division. A dense series of 

 strong spine-like bristles occurs along the edge, the upper being stouter than the lower. 

 Each is a stout process, curved at the tip, which is smooth and blunt. No trace of the 

 serrated edge beneath is now seen. By transmitted light they are dull yellow. A few 

 serrated tapering bristles are in the row bounded posteriorly by the papillae, which are 



1 ' Trans. Linn. Soc, Zool./ vol. i, p. 504, pi. lxv, figs. 5—9, 1877. 



2 Named after M. Armand De Quatrefages, who for many years was the leading authority on 

 the Annelids in France. 



