Manchester Meiiioirs, Vol. Ix'i. (1916), No. I. 25 



1.8 cm. to 2.4 cm. The encrusting base is small, 6 by 3 mm. 

 in diameter, and the merest fraction of a millimetre in height, 

 and is attached to a fragment of shell. 



The axis is brown near the base, and yellow at the apex, 

 it is about a millimetre m diameter in the main stem near the 

 base, and very narrow in the highest branches. The coenen- 

 chyme is thin, rough and granular, with white spicules. 



The polyps are numerous, thickly distributed on all sides 

 of the branches, and commence at a low level on the main stem ; 

 they are sometimes separated from one another by an interval 

 of I mm. The polyps and tentacles are brown, and have eight 

 bands of needle-like spicules. The anthocodiae can be re- 

 tracted within the calyces, which are white, and only slightly 

 raised above the surface until there is only a slight brown 

 swelling, bounded by the calyx. The detailed structure of the 

 stem and axis is as described by Wright and Studer for the 

 genus Euplexaura. 



The spicules of the" coenenchyme and calyx arc spindles, 

 usually with two rows of warts, and a very few (juadriradiate 

 forms. The spicules of the polyps are needles or rods, with 

 simple processes. The spicules are smaller than those described 

 by Wright and Studer for this species. The spindles are from 

 0.06 X 0.05 to 0.14 X 0.06 mm. The needles arc about o. 13 x 

 0.014 "^ro- 



This species was collected during the voyage of the " Chal- 

 lenger," at two stations near Kobe, Japan, at depths of 8 and 

 50 fathoms. My specimen and its spicules are much smaller, 

 but it otherwise agrees in all essential points with the " Chal- 

 lenger " specimen, leading me to regard this as a young form 

 of Euplexaura parciclados, W. and S. 



Locality, etc. — Pieter Faure, No. 13,581. Stalwart Point, 

 N.N.W., Q miles. Denth, 33 fathoms. By dredge. Nature of 

 bottom, sand and shells. Date of collection, August 2gth, IQOI. 



Family, Primnoidae- Sub-family, Primnoin^x. 



StacJiyocles ca pen sis, sp.n. 



riaie III. 



The polyps are arranged in verticils of seven to nine usu- 

 ally. In most cases there is an interval between the verticils. 

 The oral openings face downwards. The branching is nearly 

 dichotomous. Only rarely do the opercular scales of one verticil 

 come in contact with the sclerites of the lower row of polyps. 



This species is represented in the collection by one speci- 

 men and ssveral fragments. The axis of the complete specimen 

 is 8 cm. in height, about 2.8 mm. in diameter near the base, and 

 I mm. near the apex. It is horny, yellow and iridescent, its 

 surface has small grooves running in a circular direction, and 

 its interior has a few calcareous particles. One of the two 

 primary branches into which the main stem divides is dichoto- 



