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1897. 



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1906. 



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1914. 



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76 SABELLIDES OCTOCIRRATA. 



1893. Sabella adspersa, Lo Bianco. Atti R. Accad. Sc. Nap., vol. v, No. 11, p. 64, Tav. iii, fig. 3 



(tube). 



1894. „ octocirrata, Bidenkap. Christ. Vet.-Akad. Forhandl., p. 121. 



Fauvel. Mem. Soc. Nat. Cherbourg, t. xxix (3 e ser., t. ix), p. 346. 

 Birula. Bull. Acad. Imp. St. Petersb., 5 e ser., t. vii, p. 15 (foot-note). 

 Michaelsen. Polych. deutsch. Meere., p. 166. 

 Norman. Ann. Nat. Hist., ser. 7, vol. xii, p. 283. 

 var. mediterranean, De St. Joseph. Ann. Sc. nat., 9 e ser., t. iii, p. 234, 



pi. v, figs. 104 and 105. 

 Mcintosh. Ann. Nat. Hist., ser. 8, vol. xiii, p. 101. 

 Rioja. Annel. Poliq. Cantab., p. 44. 

 Hessle. Zool. Bidr. Uppsala, No. 5, p. 113. 



Habitat. — Dredged in St. Magnus Bay, Shetland (Dr. Grwyn Jeffreys, 1867). This 

 form was dredged off Valentia by Dr. Grwyn Jeffreys in 50 to 60 fathoms in 1870 ; also 

 off the Hebrides ; dredged in Loch Portan, Lochmaddy, August, 1872, the loch being 

 more or less mixed with fresh water, or at least brackish (W. C. M.). 



The typical form is found in Norway (Sars, Rathke) ; Sweden (Malm) ; Medi- 

 terranean (Grrube, Marion) ; var. mediterranean Saint Raphael (De St. Joseph) ; Caspian 

 Sea (O. Grimm 1 ) ; Finmark (Norman). 



The Hebridean example is small and presents anteriorly a bluntly conical snout 

 from which the tentacles have been removed, but in the Irish specimen they are provided 

 with long and proportionally thick papillae or " cilia," which, however, are devoid of a 

 central axis. The tip in the preparation has a " hairy " aspect as if from numerous 

 palpocils, as in S. borealis (Plate CXVIII, fig. 11). Moreover, the papillae extend nearly 

 to the extremity, only a short granular portion projecting beyond them. The size of 

 these papillae seems to be a feature of the species. From the dorsal surface of the third 

 segment eight somewhat stiff branchiae project forward. They are proportionally longer 

 than in Sabellides borealis, and more finely tapered. 



The body (Plate CXXXVIII, fig. 2) is small and slender, a little more than half an inch 

 in length, scarcely tapered anteriorly, with the exception of the short cone of the snout, and 

 very gently tapered posteriorly till near the tip, when more rapid diminution occurs to the 

 vent, on each side of which is a slender cirrus. So far as can be observed fourteen bristled 

 segments occur anteriorly, distinguished by the absence of the long cirrus which is present 

 in the sixteen posterior segments. The bristles are short and translucent, with slightly 

 curved, winged and tapering tips, and they are borne on a prominent setigerous process. 

 The anterior hooks have a rounded crown, the curve smoothly running into the convex 

 dorsal (or posterior) outline, and the four teeth are characteristic, that next the crown 

 being the largest, and the second, third and fourth regularly diminishing. The prow 

 curves rather far forward and the tip is somewhat small. 



The posterior hooks are prominently situated on the edges of the fillets and are free 

 distally, a space separating the one from the other. They are very minute, and differ 

 from the anterior in the sinuous curve of the crown and the slightly broader prow. They 

 have, however, only four teeth as in front. The figure of the hooks in the var. 



1 ' Ann. Nat. Hist./ February, 1876. 



