504 DR. W. C. M'INTOSH ON THE ANNELIDA 



Aeicia gexenlandica, n. sp. (PI. LXV. figs. 5-9). A fragmentary specimen (anterior 

 region) was dredged at Station 4, in 20 fathoms. Many of the examples of the genus 

 procured elsewhere hy the dredge are in the same condition (i. e. represented by the 

 anterior region), while those procured hy digging are not uncommonly devoid of the 

 same part. The general form of the head and body corresponds to that of its allies, 

 and especially to Aricia Kupfferi, Ehlers *, a form described from the collection of the 

 ' Porcupine.' It is at once distinguished, however, from the latter, A. Cuvieri, and 

 the abundant Scotch A. Latreillii by the absence of the pectinate rows of papillae on the 

 ventral surface. The snout is elongated and pointed, and a little pigment exists at the 

 base of the region dorsally, but there is no evidence of distinct eyes in the preparation. 

 The lateral folds of the mouth turn smoothly round to form the posterior border of 

 the first bristle-bearing segment. The succeeding sixteen bristle-bearing feet (2nd to 

 17th) constitute the anterior region, characterized by the pectinate rows of papillae 

 along the lateral border of the foot and the numerous strong bristles. The papillae are 

 few in number, generally about six, and the upper is considerably longer than the others : 

 ail are simple, conical, hypodermic papillae. The stout bristles of the inferior division of 

 the foot are somewhat like those of M. Claparede's A.foetida, consisting of thick shafts 

 with peculiarly curved tips (PI. LXV. fig. 5 a), the striated brownish region ending in a 

 fine point, beyond which the translucent terminal wings proceed to the tip. The edges of 

 the latter (fig. 5, seen from behind) are finely serrated. Besides the foregoing, there are 

 numerous short tapering bristles of the same type as the dorsal fascicle, and a few large 

 hastate brown spines (fig. 6), which posteriorly sometimes project in a conspicuous 

 manner. The dorsal fascicle consists of a series of stout tapered bristles, having the 

 characteristic transverse markings so common in the group, and apparently due to 

 minute rows of spines transversely arranged. The tips of the bristles are much attenu- 

 ated, and the distance between the transverse rows (which become mere lateral serrations) 

 increases with the diminution of the bristle. 



After the form of the foot alters, the bristles of the dorsal fascicle are much more 

 slender and the distal spinous rows are further separated. Amongst these are some shorter 

 forms (also with spinous shafts) which terminate in a fork, one of the prongs being 

 longer than the other and both slightly thickened at the tip (fig. 7). The web of the 

 fork has fine chitinous hair-like processes. A distinct curve of the shaft occurs below 

 the fork. The ventral bristles are much larger, with evident serrations and finely 

 tapered tips, the peculiar narrowing which takes place being less easily noticed than n 

 A. Latreillii and others. 



The branchiae commence on the 5th bristled segment (fig. 9). 



Scoloplos armiger, O. E. Miiller. Stations 4 & 7, ut antea ; Holsteinborg Harbour, 

 30 fathoms. 



Kaidonebeis quadrictjspida, (Erst. A fragment from Station 7, 1100 fathoms, on a 

 muddy bottom. 



Ammotrypane aulogaster, H. Rathke. 5-20 fathoms, in Godhavn Harbour. 



* Zeitsch. f. w. Zool. Bd. xxv. 1, p. 57. 



