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



This may be Malmgren's P. artica* but as he only says as to its characteristics 

 that it is similar to P. prcetermissa, with the exception of having six teeth on the 

 crown of the hook, we are left quite in doubt as to his species. 



The anterior portion of a specimen of Clymene ebiensis, Aud. and Ed.,| also 

 came from Shetland. It is recognised by the pointed snout, the somewhat swollen 

 anterior segments, and the absence of the usual frontal flattening. The shape of 

 the hooks (Plate XVI. fig. 12) is peculiar, the chief fang being short, and the 

 crown somewhat flattened. There are five or six teeth above the former. The 

 curves of the organ and its coarse striae are also characteristic. I could not find 

 in this specimen either spines or hooks in the first three segments. The figure 

 of the hooks given in the "Regne Animal" is quite unfit for identification. The 

 species is also allied to Prof. Grube's Clymene leiopygos,l from Cherso, though his 

 drawing of the hooks is widely different. 



The Ammochares ottonis, Grube,§ has been found abundantly, at St Andrews, 

 in the stomachs of cod, at Lochmaddy under stones near low water, and dredged 

 by Mr Jeffreys in Shetland and the Minch. The bristles are rendered hirsute 

 by microscopic spines, as shown by Dr Malmgren ;|| but the hooks of the rasp- 

 like belts haA^e a much more characteristic shape than represented by this author's 

 artist, since they are figured without any shoulder, and with the curve at the 

 back of the beak too prominent. Their exact condition is shown in Plate XV. fig. 

 14. There are three tufts of longer and more delicate bristles in the British 

 specimens on the first region, instead of two, as shown by Drs Grube and 

 Malmgren; but one may have been overlooked from its minuteness. I am 

 inclined to believe, judging from Malmgren's paper, that the A. assimilis of Sars 

 is the same species as the above. Dr Carrington of Eccles describes this species^" 

 under the name of Ops digitata. 



Of the family of the Ampharetea, Malmgren, several representatives new to 

 Britain have occurred. One species, the A mphicteis gunneri, Sars, though unnoticed 

 in the recent Catalogue of the British Museum, had been found by Mr Gosse at 

 Ilfracombe, and described by him under the name of Crossostoma midas.** Dr 

 MALMGRENff mentions another form, the A. sundevalli, which is characterised by 

 having nineteen hook-bearing processes posteriorly, whereas the former has but 

 fifteen ; the bristles also have the winged portion striate, and the upper part of 

 each hook widest, while in A . gunneri the corresponding region of the bristle is 

 smooth, and the hook widest in the middle. Our common Hebridean and Zet- 

 landic Amphicteis has certain of the characters ascribed to each of these species, 



* Annulat. Poly. Spetz. &c. p. 100. -J- Cuv. Reg. An. iii. pi. xxii. fig. 4. 



+ Archiv fur Naturges. 1860, p. 91, taf. iv. fig. 3. 



§ Archiv fur Naturges. 1846, p. 163, taf. v. fig. 2 a, b, c. 



|| Annulat. Polychaeta, &c. tab. xi. fig. 65 D. 1 Proc. Lit. & Phil. Soc. Manchester, 1865. 

 ** Ann. Nat. Hist. vol. xvi. 1855, p. 310, pi. viii. figs. 7-12. 

 f f Nordiska Hafs- Annul, taf. xix. fig. 46 D. 



