SiAiPSON — A Revision of the Gorcjonellidae. 317 



The lower 4 cm. bear no polyps ; tliis is followed by two bare tracts whicli 

 diminish to two distinct lines from which the verrucae diverge at acute 

 angles. 



The verrucae have the form of truncated cones ; but the walls are very 

 thin, and even near the base they have collapsed, and present the appearance 

 of those near the tip in the previous specimen. Throughout the whole of 

 the colony they are directed slightly upwards (fig. 32), and the tips are 

 incurved ; this is more marked towards the apex. Near the growing point 

 they are wart-like. The largest of the verrucae are 2'5 mm. in height and 

 about 1'5 mm. in diameter at the base. 



The canal system is identical with that described in the previous 

 specimen. 



The axis is cylindrical, but tapers slightly towards the tip ; it is greenish 

 brown near the base, but becomes pale yellow in the younger portion. It is 

 not very calcareous, and the surface has only very indefinite longitudinal 

 striae. 



The spicules (fig. 33) of this species are extremely characteristic; they 

 are covered with long papillose warts, which are for the most part widely 

 separated, and so give a very irregular outline to the spicules. The ends of 

 the elongated double-clubs and double-spindles are markedly pointed, and 

 have the form of elongated cones. 



The following are the chief types, with measurements, length by breadth, 

 in millimetres : — 



(rt) Double-clubs with a short, broad constriction, with almost hemispherical 

 ends and with large, slightly papillose warts : 0"09a x O'Oo ; 

 0-09 X 0-04:5; 0-08 x 0-05; 0-07 x 0-04 



(J) Elongated double-clubs approaching double-spindles and even- 

 spindles ; these have markedly conical ends ; the constriction may 

 be more or less definite ; and they are cov-ered with relatively 

 distant, long, papillose warts : 0114 x 0-04 ; 0-13 x 0'035 ; 

 0-11 X 0-03; 0-11 X 0-02. 



Locality. — Andamans Sea, 55 fms. 



XVIil. — Scirpearia anomala n. sp. Figs. 34 and 35. 

 This species has been established for a small, complete, simple colony in 

 the Littoral Collection of the Indian Museum. It is 17 cm. in length, 

 attached to a piece of decayed shell which is overgrown with Polyzoa and 

 worm-tubes. The diameter of the colony near the base is 1'75 mm. ; midway 

 it is 2 mm., while near the apex it is 1'5 mm. ; so that there is only a slight 

 gradation, 



