162 "THETIS SCIENTIFIC RESULTS. 



flahellum, lliough there appears to be a stronger tendency to 

 anastomosis than in the Challenger specimens. The height of 

 the largest colony is 24 cm., with a width of 16 cm. across the 

 expanded portion. 



A small, broken piece of a colony is of a brown colour with the 

 polyps tending to encroach on the middle line of the branch in- 

 stead of being s'rictly bilateral iu arrangement. The spicules 

 here are colourless, and rather smaller than in the orange 

 specimens. 



Previously recorded from Port Jackson, 30-35 fathoms. 



Fannly PRIMNOID^. 

 Genus STACHYODES, Wright and Studer. 



STACHYODES STUDERI, Versluys. 



Stachyodes regularis, Wright and Studer, Uhall. Rep., Zool., xxxi. 

 1889, p. 55, pi. xi., figs. 2, 2» ; pi. xx, fig. 3. 



Stachyodes studeri, Versluys, Die tjorgoniden der Siboga Ex- 

 pedition, ii. Die Primnoidse, 1906, pp. 94-96, figs. 112-117. 



Stations 15, 42, and 44. 



Tlirfe incomplete specimens 11 cm., 23 cm. and 38 cm. in 

 length respectively. On the most slender specimen the polyps 

 occur in whorls of eight to nine ; on the largest there are as 

 many as ten to eleven in a whorl. 



Previously recorded from Kermadec Islands, 600 fathoms ; 

 Celebes Sea (Siboga), 1080 and 11 6.5- 1264 M. 



Genus A M P H I L A P H I S, Wright and Studer. 



AM PHIL APHIS PLUM ACE A, sp. nov. 

 (Plate Ixv., fig. 3 ; pi. Ixviii., tig. 3 ; pi. Ixxiv.) 



Stations 22, 40, 44. 



This delicate and graceful form bears a certain resemblance 

 to an uncurled ostrich plume. Branching is approximately in 

 one plane, and the brandies and twigs show a strong tendency 

 to sweep togetlier in long, drooping curves. Occasionally the 

 branches come off like the barbs along tlie shaft of a feather, but 

 more generally the branching is dichotomons, or quite irregular. 



