390 W. C. M'INTOSH- ON BKITISH ANNELIDA. 



apparent absence of eyes in the spirit-preparations, and the large smooth scales. 

 Kinberg, however, states that the eyes are on the peduncles. The feet are uniramous, 

 with short ventral and dorsal cirri. Superiorly there is a series of long brush-shaped 

 bristles with tufted tips ; next, the characteristic strong bristles with the brush on one side, 

 and with a pencil-like crest at the tip ; while inferiorly are elongate subulate bristles, 

 which are boldly serrated at the commencement of the terminal region, then gradually 

 taper to a finely serrated extremity. With the first or brush-like series are many 

 short and apparently simple bristles. They project only a short distance, and do not 

 seem to have been noticed by Kinberg, who, however, mentions a similar kind in 

 Eupompe. The structure of the terminal whip of the strong bristles is somewhat 

 indistinctly represented by the latter author, since it is a true prolongation of the 

 shaft with lateral setae. 



SIGALIONID^. 



A single species of Sthenelais (S. boa, Johnst.) and Pholoe viinufa, Fabr., are the 

 only representatives of the family mentioned in the Catalogue of the British Museum. 

 To these Sthenalais limicola, Eiilers (a scale of which is represented in PL LXX. 

 fig. 13), Sif/alion mathildce, Aud. & Ed., and S. bmkii, M'L, have since been added. 

 The present notice further extends the list. 



Sthenelais boa, Johnst., is a species widely distributed from Shetland to the Channel 

 Islands; and the S. idunce, H. Eatbke, is, in all probability, referable to the same 

 animal. 



S. ■? ZETLAJf DiCA, n. s. A fragmentary form dredged by Dr. Jeffreys in Shetland. The 

 anterior region is injured, and the head absent, though the proboscis is present. The 

 scales are somewhat reniform, irregularly rounded anteriorly, and densely covered 

 with flat papilltB over the whole surface ; on the folded edge of the scale they form 

 low, smooth warts, larger in proportion than those in S. boa (PI. LXX. fig. 15). The 

 outer edge, again, bears a somewhat closely arranged series of short clavate papillae, 

 almost globular at the commencement, and with minute processes or palpocils on the 

 summit. 



The superior lobe of the foot has numerous and rather small papillae, which end 

 rather bluntly, the tip being provided with several secondary papilla. The superior 

 bristles are well developed, and have their rows of spines very distinctly marked. The 

 divisions of the inferior lobe are somewhat indistinct ; but all are furnished with the 

 small papillae having the secondary processes or warts at the tip. There is a well-marked 

 group of the latter just at the ventral margin where the inferior group of bristles 

 emerges. The superior ventral bristles (PI. LXX. fig. 16 — in chloride of calcium, and 

 with the basal part of the terminal process slightly folded) are strong, with four or five 



