68 

 C o 1 o r. The colony is medium brown, the axis very dark brown, and the spicules colorless. 

 Three fine specimens from Station 164 measure up to 21 cm. in length. 



AcamptOgorgia Wright and Studer. 

 Acamptogorgïa Wright and Studer. Challenger Reports, the Alcyonaria, 1889, pp. LV, 115. 



Although species belonging to this genus have been described by several of the later 

 writers, the genus itself is not discussed. 



The original description of the genus is as follows : 



"The colony is branched, with tubular, cylindrical short polyp calyces, which are usually 

 given off alternately from each side of the axis. The spicules are foliaceous clubs, the folia 

 project beyond the ccenenchyma, but the triradiate bases are embedcled in the ccenenchyma. 

 In most cases bidentate folia, at right angles to one another, originate from a tripartite base. 

 Besides these there are warty curved spindles and clubs. The tentacular opercula are well 

 developed". 



In a more detailed description of the genus, found on page 115 of their Report on 

 the Challenger Alcyonaria, the describers say : 



"In most cases the spicule has become triradiate by the shooting out of several projec- 

 tions from about its middle. From the place where these rays centre one or two dentate foliar 

 expansions arise, these latter stand at an acute angle to one another, and their long axes 

 always fall into the angle between two of the rays. These spicules are so placed on the wall 

 of the polyp body that the stellate rays are always inserted into it, while the foliar expansions 

 project, scale-like over the surface. The collaret consists of bent spindles, spiny, and upon 

 which the opercular spicules abut. Each of the eight rays of the opercular covering consists 

 of but three fairly broad and somewhat flattened spicules". 



The type species of this genus is Acamptogorgia arbuscula (Gray, MS.). Other species 

 are Acamptogorgia alternans Wright and Studer, A. a/ra Thomson and Henderson, A. bebry- 

 coides von Koch, A. gracilis Thomson, A. spinosa Hiles, A. tubcrculata Hiles, A, frnticosa 

 Germanos, A. acanthostoma Germanos, and the species about to be described. 



"'Acamptogorgia horrida" Hiles seems to the present writer to belong to the genus 

 Ec h inom uricea . 



1. Acamptogorgia spatulata new species. (Plate XIY, figs. 2, 2<t; Plate XXI, fig. 12). 



Stat. 117. i° 0.5 N., 122 56' E. North Celebes. 80 meters. Sand and coral. 

 Stat. 166. 2° 28'. 5 S., 1 3 1 ° 3.3 E. near New Guinea. 118 meters. Hard sand. 

 Stat. 289. 9 o'. 3 S., I26°24'.5E. Timor Sea. 112 meters. Mud, sand and shells. 



Colony flabellate in form, not reticulate, 8.5 cm. in height and with a spread of 9.4 cm. 

 The main stem is bare for 2.2 cm. above its base, and the remainder gives off branches in 

 a roughly pinnate mannen The branches themselves are pinnately divided, and branchings of 

 the third order are found. The branches are about 7 mm. apart, on the average. The calyces 



