87 

 2. Buskia setigera Hincks. (PI. V, figs S — 10). 



Buskia setigera Hincks, 1887, "Pol. Hydr. Mergui Arch.", J. Linn. Soc. Zool., XXI, p. 127, 



PI. XII, figs 9-13. 

 Buskia setigera Kirkpatrick, 1890, "Hydr. Pol. China Sea", Ann. Mag. Nat. Hist. (6), V, p. 17 



(Tizard Bank, 27 fathoms). 

 Buskia setigera Kirkpatrick, 1S90, "Hydr. Pol.Torres Str.'', Proc. R. Dublin Soc. (X. S.) VI, p.612. 

 Buskia setigera Thornely, 1905, 'Herdmax's "Rep. Pearl Oyster Fish. G. of Manaar", Suppl. 



Rep. XXVI, "Polyzoa", Publ. by the Roy. Soc, p. 128. 



3S0. F. Stat. 47. Bay of Bima, 55 Metres; mud with patches of fine coral-sand. 



322. D. Stat. 50. Bay of Badjo, W. coast of Flores, o — 40 Metres; mud, sand and shells. (On 



slide 325. M., Valkeria atlantiea). 



339. B. Stat. 71. Makassar, o — 32 Metres; mud, sand with mud, coral (mostly on Hydroids). 



38. K. Stat. jj. Borneo Bank, 3°27'S., i\]° 56' E., 59 Metres; fine grey coral-sand. 



1 30 N 



xf' [ Stat. 164. i°42'.5 S., I30°47'.5 E., 32 Metres; sand, small stones and shells (on 



J:> ' " l Hydroids, Bugula, etc). 



505. D. ] ' o < 1 



144. D. Stat. 166. 2°28'.5S., i3i°3'.3E., 118 Metres; hard coarse sand (on a Hydroid : — 



Cellepora slides 144. C, 144. C. 2 ). 

 296. D. Stat. 273. Off Pulu Jedan, E. coast of Aru Islands, 13 Metres; sand and shells (on 



Catenicella, slide 296. B. 1 ). 

 also from Torres Straits (Mus. Zool., Cambridge), A. C. Haddon Coll., Reg. Feb. 24, 1898. 



Zooecia relatively large. Stolon well chitinised, forming slight expansions separated by 

 internodes which vary in length. A diaphragm is developed immediately on the distal side of 

 each internode, and another on each side. From each of the regions corresponding with a lateral 

 diaphragm a branch is given off, the two branches being nearly always exactly opposite one 

 another, and standing at right angles to the main stem. Each lateral branch gives rise to an 

 internode, which may be formeel close to the parent-stem. Y\ 'hen this is the case in both lateral 

 branches (fig. 8) the zooecia appear paired, their principal axis being parallel to the main stolon. 

 In other cases the first node of a lateral branch may be at a greater distance from the main 

 stolon. The lateral branches do not usually give off new branches; but each is prolonged beyond 

 the first node (a) as a short barren stolon ; (ö) as a continuation of the branch forming a new 

 internode which bears a single zooecium and is often prolonged as a barren stolon; (c) as a 

 stolon which branches like the main stem. The zooecia are almost entirely erect, broader basally 

 than distally, and with a small attachment to the internode. One aspect of the zooecium is 

 convex, while the opposite side is fiattened and forms a membranous "aperture". The basal 

 end of the zooecium gives off a varying number of spines, which may be used to give a firmer 

 attachment. One of these commonly lies on the stolon, to which it is fastened along its whole 

 length, in such a way as to form a buttress supporting the base of the zooecium. A pair of 

 spines, near the proximal end, may be more developed than the others and are directed in an 

 oblique direction. At its distal end the zooecium bears several spines, in most cases four in 

 number, arranged at equal distances round the region of the orifice. Each of these spines 

 consists of a short basal segment foliowed by an elongated, slender, pointed spine. Collar greatly 

 developed, its supporting ribs at first spirally arranged and then becoming straight (fig. 9). 

 Polypide with a gizzard, and apparently with 8 tentacles. 



87 



