268 Dr. W. C. Mcintosh o?i the Annelida 



tapering tips, sparsely furnished with short clavate papillae. 

 The tentacular and dorsal cirri have similar clavate processes ; 

 and the latter extend rather bejond the extremity of the 

 bristles. The ventral cirri have also a few small clavate 

 papillae. The papilla at the inner end of the foot is some- 

 what elongated. 



The feet are well marked, though somewhat thick and short. 

 The bristles of the dorsal tuft are short (PI. IX. figs. 14& 15). 

 The venti-al series consist of one kind, with a stout shaft and 

 a simple tip (PI. X. figs. 12 & 13). There are comparatively 

 few rows of spikes. The former figure is from the middle of 

 the group, the latter from the superior border. The s}^ne 

 at the base of the smooth tip is well marked in the last 

 mentioned. 



The family of the Accetidse has no representative ; but four 

 examples of the next, the Sigalionid^, occur. The first is 

 8tlieneJa{s /^m^co7a,Ehlers, a northern species having a very wide 

 distribution. The second is Leanira tetragona, (Erst., which 

 was met with in 1872 off Cape Rosier in 110 fathoms on 

 coarse sand and stones, and in 110 to 221 fathoms between 

 Anticosti and the Gaspe peninsula in 1873. The form is 

 distinguished by its Sigalion-\\\iQ appearance ; but the bristles 

 of the feet have simple tapering tips. The antennae are repre- 

 sented by short processes at the side of the tentacle ; and no 

 eyes are visible in spirit-preparations. The scales are pellucid, 

 reniform, and furnished with rather long and nearly cylindrical 

 papillee, the tips of some of which are obscurely bifid ; the rest 

 of the margin is smooth. The superior lobe of the foot bears 

 long bristles with wide rows of spikes, while the basal portion 

 is smooth. A group of long papillee project from the upper 

 margin of the foot, and occasionally a few are obscurely bifid. 

 Similar organs occur on the inferior lobe. The whole of the 

 bristles of the latter have tapering filiform tips, with appa- 

 rently a spiral series of markings. The shafts and tips of the 

 superior ventral series are, as usual, stouter than the inferior ; 

 but the diminution is not quite uniform, as a strong group 

 occurs just above the most delicate ventral series. The ven- 

 tral cirrus is well developed, but does not quite reach the tip 

 of the foot. There are three ciliated pads on the dorsal edge 

 below the branchial process. Another Leanira, apparently 

 differing from any yet described, though allied to L. Yhleni, 

 Mgrn., was procured in 1873 in 210 fathoms off the S.W. 

 point of Anticosti. None of the examples are complete ; but 

 it seems to attain a length of 2 or 3 inches. 



The head is at once distinguished from L. Icevis of the ' Per- 



