1892, 



Hermella 



1893. 



Sabellaria 



1894. 



a 



1898. 



}> 



1904. 



u 



1906. 



» 



1909. 



j-j 



24 SABELLARIA ALVEOLATA. 



1887. Hermella aheolata, Mayer. Mittli. Zoo]. Stat. Neap., Bd. vii, pp. 723, 731, pi. xxii, figs. 15, 16, 



pi. xxiv, figs. 7—13, pi. xxvi, fig. 28. 



1888. „ „ idem. Ibid., Bd. viii, pp. 481, 490, 494, 496, 507—9, 511, 527, 531, 536, 548, 



562, 576, 579, 581, 590, 594, 635—655. 



1890. Sabellaria (Hermella) aheolata, Malaquin. Annel, Bonlon, p. 48. 



1891. „ aheolata, Hornell. Trans. Biol. Soc. Liverp., vol. v, p. 260. 



Jourdan. Ann. Sc, nat. Zool., 7 e ser., t. xiii, p. 251, pi. vi, figs. 13—16. 



„ Lo Bianco. Atti Accad. Sci. Fis. Mat., vol. v, p. 45. • 

 „ De St. Joseph. Ann. Sc. nat. Zool., 7 e ser., vol. xvii, p. 160. 

 „ idem. Ibid., 8e ser., t. v, p. 405. 



Allen. Jonrn. M. B. A., vol. vii, p. 232. 

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

 Fanvel. Ibid., 9 e ser., t. x, p. 208. 

 „ „ ,, idem. Bull. Inst. Oceanogr., cxlii, p. 20. 



„ „ „ Lo Bianco. Mitt. Zool. St. Neap., Bd. xix, p. 586. 



1910. ,, ,, Southern. Proc. Roy. Irish Acad., vol. xxviii, p. 243. 

 „ „ „ Elwes. Journ. M. B. A., vol. xi, p. 66. 



1911. „ „ Riddell. Proc. Liverp. Biol. Assoc, vol. xxv, p. 66. 

 „ „ ,, Fauvel. Bull. Inst. Oceanogr., No. 194, p. 33. 



1914. „ „ Southern. Proc. Roy. Irish. Acad., vol. xxxi, No. 47, p. 149. 

 ,, „ „ Fauvel. Campag. Scient. Monaco, Fasc. xlvi, p. 276. 



1915. „ „ Allen. Journ. M. B. A., vol. x, p. 645. 

 1917. „ „ Rioja. Annel. Poliq. Cantab., p. 42. 



Habitat. — Abundant in the estuaries of such rivers as the Tees, indeed, it stretches 

 from Berwick Bay to the south of England, and occurs also on the west coast as 

 at Southport (Dr. Carrington), Plymouth (Spence Bate and Brooking Rowe), and 

 the Firth of Clyde (D. Robertson), Liverpool (Prof. Herdman), Plymouth (Dr. Allen), 

 Luce Bay, Wigtownshire (Prof. Gr. S. Brady and D. Robertson), 1 between tide marks, 

 Dublin Bay and West Coast of Ireland (Southern), Torquay (Elwes). 



Abroad it extends to the Mediterranean, the shores of France (De Quatrefages, De 

 St. Joseph, Fauvel), and the Mediterranean (Verany, Panceri). 



The cephalic region (Plate CXII, figs. 4 and 4 a) differs from that of S. spinulosa 

 in the more beautifully regular arrangement of the paleae of the opercular crown, and in 

 the greater development of the filiform papillas, which form a graceful margin to it, and 

 are even seen through its translucent marginal paleae. The tentacles are richly ciliated, 

 and the peristomial membrane has a folded anterior edge as it slants obliquely outward 

 and forward from the ciliated blunt extremity of the prostomium, whilst its membrane 

 fuses behind it in the pigmented median line (Arnold Watson). This observer also 

 kindly sent a sketch indicating the currents caused by the tentacular filaments, which 

 course obliquely inward and backward from the curves or loops on each side of the 

 opercular pillars, and finally enter the mouth. As the tentacular filaments occur 

 anteriorly on the inner as well as the outer border of each pillar a very effective 

 series of currents is thus produced. Mr. Watson found the tips of the papilla beneath 



1 f Proc, Nat, Hist. Soc. Glasgow/ 1862. 



