410 DR W. CARMICHAEL M'lNTOSH ON THE STRUCTURE OF THE 



Sthenelais limicola, Ehlers.* — Another species of Sthenelais, brought in 

 numbers by Mr Jeffreys from the Shetland seas, seems to be identical with Dr 

 Ehlers's species from Quarnero, in the Adriatic. The anterior scales are furnished, 

 towards the outer margin, with peculiar processes, which, so far as regards our 

 examples, are uncharacteristically represented by the German naturalist. The 

 processes are irregular, either simple, bifid, or divided into several pieces, and the 

 margin of the scale is generally folded back under examination, so as to render 

 them indistinct. In the first scale the processes are papillary and undivided. The 

 dorsal lobe of the foot has four or five elongated papillary processes superiorly, 

 and a peculiar broad and curved lobule projects upwards from the inferior lobe. 

 The inferior bristles have their terminal clawed portions shorter than in S- 

 mathildw, and those corresponding to figs. 4 and 5, Plate XV. (S. dendrolepis), have 

 only two or three spines at the terminal portion of the shaft. Dr Ehlers's figures 

 of the bristles are not good, whether as applied to this or any other species of 

 Sthenelais — no compound claw, for instance, appearing on the terminal process.- 

 The animal also possesses four eyes, instead of the two mentioned by the foregoing 

 author, the anterior pair being hidden from ordinary observation in two sulci under 

 the squamous processes at the base of the median tentacle. This may be the 

 Aphrodita arcta of Sir J. Dalyell,| a species likewise brought from Shetland. 



Notophyllum polynoides, CEested. — A specimen was procured from the deep- 

 sea fishing, off St Andrews Bay. The feet are described by Dr Malmgren, J as 

 having the dorsal lamellae of an elliptico-subrectangular or unequally reniform 

 shape ; and in this the new or regenerated plates were somewhat reniform, espe- 

 cially posteriorly, while the older inclined to an elliptico-subrectangular form. 

 The new lobes are even at the edges, but the older are slightly frilled or waved — 

 an appearance intensified by the coloured border of rich blackish-brown, which 

 glistens in the play of light with a purplish-red iridescence. They are also 

 characteristically marked with small groups of white grains. The structure of 

 the bristles is represented in (Plate XV. fig. 9), and consists of a long smooth 

 shaft, which terminates in the swollen end and jointed tip, seen laterally in 9 a, 

 and in profile in 9 b. The terminal portion is finely serrated, and on each side of 

 its base the shaft of the bristle sends off a series of short spikes, which are inclined 

 towards the serrated edge of the terminal division. 



Ophiodromus vittatus, Sars.§ — Dredged rather abundantly on a bottom of 

 tenacious grey clay and mud in Lochmaddy, in from four to eight fathoms, and 

 rarely met with there under immersed stones at extreme low- water. Length, 2\ 

 inches ; head small, distinct, furnished with five tentacles — two lateral on each 

 side, and a median ; the inferior or external lateral being furnished with a thick 



* Die Borstenwiirmer, &c. 1864, p. 120, taf. iv. fig. 4-7, and taf. v. 



f Pow. Creat. vol. ii. p. 170, pi. xxiv. fig. 14. % Nord. Hafs-Annulater, p. 93. 



§ Forhandlinger i Videnskabs-Selskabet, 1861, pp, 87, 88. 



