29 



slides which have been mounted to illustrate other species of Polyzoa. It is obvious that it is 

 widely distributed in the Malay Archipelago; and I have no doubt that it might be found on 

 Hydroids, Polyzoa, etc, from many Stations from which I have not recorded it. 



The 'Siboga' specimens agree closely witli those from Europe. The individual shown by 

 Sars in fig. 2Ó of the original description resembles them in having the indication of a muscular 

 joint on the stem. In one specimen (337. H) I have found one complete stalk-joint, and a 

 second, more distally placed joint which is not completely formed. Other examples of jointed 

 specimens of this species are noted in the synonymy. The lengths, in u, of the several parts of 

 the individual shown in fig. 12 are as follows: — calyx, 190; thin part of stalk, 420 ; muscular 

 base, 150; total length, 760 ; breadth of calyx, 180. The thin part of the stalk varies greatly 

 in length in the specimens examined. I have not been able to ascertain the number of the 

 tentacles with certainty, but it seems to be about 14. In the specimens 338. D., but not in 

 other cases, I have noticed a few short, curved spines on the calyx, on the soft piece of the 

 stalk next the calyx, and on the stem-joint, if this is present. Waters (19 10, p. 282) records 

 similar spines in specimens of this species from the Sudanese Red Sea, Trieste and the South 

 coast of England. Most of the specimens seem to be sexually immature. 



The present species differs conspicuously from others obtained by the 'Siboga' in its 

 delicate character and much smaller size. 



2. Barentsia discreta Busk. (PI. II, figs 8, 9). 



Ascopodaria discreta Busk, 1886, "Challenger Reports", L, "Polyzoa", Pt II, p. 44, PI. X, 



figs 6 — 12 (Tristan da Cunha, 100 — 150 fathoms). 

 Ascopodaria discreta Ehlers, 1890, "Kenntn. Pedicellineen", Abh. Göttingen, XXXVI, p. 143. 

 Ascopodaria discreta Thornely, 1905, HERDMAN's "Rep. Pearl Oyster Fisheries", Publ. by the 



Roy. Soc, Suppl. Rep. XXVI, p. 128 (Ceylon). 

 Barentsia discreta Kirkpatrick, 1890, "Hydr. Pol. China Sea", Ann. Mag. Xat. Hist. (6) V, 



p. 17 (Tizard Bank, 27 fathoms). 

 Barentsia discreta Waters, 1904, "Rés. Voy. Belgica", Zool., "Bryozoa**, p. 99, PI. VII, 



figs 6a — ■ƒ; PI. VIII, figs \-ja — c (Ile Londonderry, Magellanes Chili). 

 Barentsia discreta Waters, 1905, "Bry. Cape Horn", J. Linn. Soc, Zool., XXIX, p. 230. 

 Barentsia discreta Osburn, 1910, "Bry. Woods Hole". Buil. Bur. Fisheries (Washington), XXX, 



p. 214, PI. XVIII, figs 5, $a (Woods Hole Region, U. S. A.; Florida). 

 Barentsia discreta Annandale, 19 12, "Occ. Ent. Ind. Waters", Ree. Ind. Mus. VII, p. 205 



(Port Canning, India). The reference to this species does not seem certain. 

 Barentsia discreta Sumner, Osburn and Cole, 1913, "Biol. Surv. Woods Hole", Buil. Bur. 



Fisheries, XXX, Pt I, p. 108; Pt II, p. 596. 

 Barentsia discreta Osburn, 1914, "Bry. Tortugas Islands", Publ. 182, Carnegie Inst. Washington, 



p. 1S5 (Florida). 

 Ascopodaria misakiensis Oka, 1890, Zool. Mag. N" 20 (memoir not seen). 

 Barentsia misakiensis Oka, 1895, "Sur B. misakiensis", Zool. Mag., VII, N" 78, p. 76, PI. XII, 



figs 1 — 8 (S. of Tokyo). 



Waters (1905) gives Pedieellina australis Jullien, 1888 ("Miss. Sci. Cap Horn", VI, 

 "Bryozoaires", p. 13, PI. VIII, fig. 4) {nee Ridley, 1881) as a synonym of the present species; 

 and Osburn, 19 14, regards B. timida Verrill 1899 — 1900 ("Tunicata and Molluscoidea of the 

 Bermudas", Trans. Conn. Acad., X, p. 594) as being probably another svnonym. 



