184 SUMMARY OF CURRENT RESEARCHES RELATING TO 



The genus Potamon, for example, is mostly localised in one island and 

 in a definite area of it. In Celebes there are seven species, and of one of 

 these there are nine varieties. 



Nereicola ovata Keferstein.* — Mario Stenta communicates a note 

 on the occurrence of this interesting parasitic Copepod (representing ;i 

 family in the tribe Isokerandria, in the sub-order Podoplea) which 

 infests Nereis cultrifera, N. ihimerilii, etc. 



Pycnogonids of Bermuda.f — Leon J. Cole reports on the few 

 Pycnogonids discoverable at the Bermuda Islands, viz. Ammothea gracilis 

 Yerrill. Ammothella appendiculata Dohrn, and Anoplodactylus insignis 

 bermudensis sub-sp.n. There are strong tidal currents ; how is it that 

 the Pycnogonids are not all swept away ? The adults cling tenaciously 

 to the hydroids, but the danger comes to the eggs and larvce. The eggs 

 are taken directly from the female by the male, and, as is well known, 

 are carried by him until they are hatched. The newly-hatched larva? of 

 Ammothea and related forms bear a large pair of chelas on the enor- 

 mously developed cheliferaa, and are thus enabled to cling to the parent, 

 or to hydroids and similar objects. The most striking character of the 

 Bermuda sub-species of Anoplodactylus insignis is its protective red 

 and yellow coloration, which closely resembles Obelia marginata Allman. 

 to which it often clings. 



Annulata. 



Notes on PolychaBta.J — "W. C. M'Intosh, in his twenty-sixth con- 

 tribution of notes from the Gatty Marine Laboratory, St. Andrews, 

 discusses : (1) Pacific, Atlantic and Japanese " Palolo," and analogous 

 phenomena exhibited in British waters by Nereis dumerilii, N. longissima, 

 and other forms ; (2) the families Goniadida?, Glyceridas, and Ariciidre 

 as represented in Britain, in the " Porcupine " collection, in the Gulf of 

 St. Lawrence (Whiteaves), off Norway and Finmark (Norman) ; and 

 (3) the form described in the "Challenger" report as Hemipodus (?) 

 magellanmis, for which a new generic title — Glgcerella, as suggested by 

 Arwidsson — is required. 



New British Sabellarian.§ — E. J. Allen describes Pallasia murata 

 sp. n. from Plymouth. The new worm most closely resembles Pallasia 

 giardi M'Intosh, from Port Jackson in Australia, and P. laivispinis 

 Grube, from Upolu in the Pacific, and from Ascension. The details of 

 its structure, as well as the large size (5 inches) of the British specimen., 

 indicate that it is a new species. The paper includes an interesting 

 note, by Arnold Watson, on the structures which surround the mouth. 



Alleged Otocysts of Alciopidae.|| — P. Fauvel points out that the 

 structures described by Beraneck as otocysts, on the first and second 



* Boll. Soc. Adriat. Sci. Nat. Trieste, xxii. (1904) pp. 195-201. 

 t Proc. Boston Soc. Nat. Hist., xxxi. (1904) pp. 315-28 (3 pis.), 

 t Ann. Mng. Nat. Hist., xv. (1905) pp. ;5H-57 (1 pi.). 

 § Journ. Marine BioL Ass., vii. (1904) pp. 299-304 (1 pi.). 



II O.K. Abs. Fran?. Avanc. Sci. Congres d'Angers (1903) pp. 784-8. See Zool. 

 Zontralbl., xi. (1904) p. 822. 



