350 NOTES ON THE LITTORAL POLYCH^TA OF TORQUAY. 



also found in rather dirty, muddy sand in the inner harbour of Torquay, 

 The posterior lamina of the ventral branch of the foot is more pro- 

 nouncedly directed upwards and more truncate than is shown in any of 

 the figures given in the monograph. 



Nepthys cirrosa, Ehlers. Mcintosh, Mon. Brit. Ann., vol. ii., p. 36. 



In clean sand in company with N. Hombergii, but not quite so 

 numerous. It may be distinguished at once from N. Hombergii by its 

 comparatively narrow width and the light colour of the bristles. 



Mcintosh says (p. 38) that de St. Joseph distinguishes this species 

 by the larger size of the branchise. But it is not the branchiaj them- 

 selves, but the " cirre branchial " (called by Mcintosh " the dorsal 

 cirrus at the base of the branchia ") which de St. Joseph says becomes 

 larger and larger, until, for about the thirty last segments, it is almost 

 longer than the branchise. See Ann. Sc. Nat., 8th series, xvii., p. 21. 



Hesionidae. 



Castalia fusca, J ohn8toi'i = Kef ersteinia cirrata, Kef. Mcintosh, 

 Mon. Brit. Ann., vol. ii., p. 127. 



Common under stones, especially at Meadfoot; also in Laminaria 

 roots. It is an extremely brittle species which, like other very brittle 

 annelids, is best lifted up with a soft camel-hair brush. 



Magalia peramata. Mar, and Bobr. Mcintosh, Mon. Brit. Ann., 

 vol. ii., p. 136. 



Common amongst Laminaria roots. 



Nereidse. 



Micronereis variegata, Clpd. Claparkle, Beob. ilher anat. wirbel 

 thiere, etc., 1863, p. 57 and PI. xi, Figs. 56-7 ; and Glanures parmi Us 

 Ann. de Port Vendres, p. 122, PI. xiii, Fig. 4a. 



This little aberrant member of the Nereida? is not recorded in the 

 "Fauna of Plymouth." Four or five individuals were found amongst red 

 algse and Lithothamnion from the rocks between Oddicombe and 

 Babbicombe beaches. 



The length is 4 mm., number of segments 21. The head, which is 

 rounded in front, has no tentacles or palps. There are four eyes, the 

 lateral pair close together, the posterior pair close to the margin of the 

 head ; the first pair have conspicuous crystalline lenses. There are four 

 pairs of tentacular cirri, the front pairs situated on the front edge of 

 the buccal segment low down ; the posterior pairs, which are inserted 

 higher up, are slightly longer, than the other. The tentacular cirri are 



