Simpson — A Revision of the Gorgonellidae. 333 



double-clubs. The following are the chief types, with measurements, length 

 y breadth, in millimetres : — 



(1) Double-clubs with a very long constriction and with almost 



hemispherical ends. The warts are almost smooth; they are 

 openly disposed and arranged almost in whorls : 0-068 X 0-034 ; 

 0-061 X 0-03; 0057 x 0-027. 



(2) Elongated double-clubs passing to double-spindles. There is a very 



distinct constriction; and the ends are markedly conical. The 

 warts are not closely set, and are almost smooth : 0-114 X 0-023; 

 0-103 X 0023 ; 0-095 x 0-027 ; 0-095 x 0-023. 



Irregular forms, crosses, and scales from the tentacles also occur. 



Locality.— O'^eil Peak, N.W., \ W. 9^ miles; 90 fathoms. Bottom, 

 broken shell. 



To show the varied appearance of the verrucae, we have included here 

 three figures of specimens of Scirpcaria flagcllum in the Monaco Museum. 

 (See figs. 58, 59, and 60.) 



XXII. Scirpearia thomsoni, n. sp., figs. 61-63. 



Juncella elongata Thomson and Henderson, xl., p. 81, PL i., fig. 10 ; PI. ix., 

 fig. 17. 



We have no hesitation in establishing this new species for a specimen 

 which was originally referred to the species Juncella clongatct by Thomson 

 and Henderson, who were compelled to base their diagnosis on the very 

 inadequate description of this species which was available at the time of 

 publication of the Indian Ocean Deep Sea Alcyonaria Report. At that time 

 the spicules of Scirpearia. elongata {Juncella elongata) were unknown; but an 

 investigation of the spicules of an old specimen in the Museum of the Hoyal 

 College of Surgeons, and the consequent resuscitation of that old but 

 imperfectly known species has caused the necessity of removing the present 

 specimen. 



The colony shows several very characteristic features : for example, 

 (1) the nature of the branching, (2) the marked rigidity of the colony, 

 (3) the nature of the verrucae ; but most of all the distinctive character 

 of the spicules, which mark it off as a very definite and new species. 



The specimen is 22 cm. in height, and is branched approximately in 

 one plane. The branching is almost dichotomous ; and the silhouette of the 

 axis (fig. 61) gives the essential features. On the whole, the colony is very 

 rigid, owing to the very densely calcareous nature of the axis. The coenen- 

 chyma is moderately thin, but densely spiculose ; the general colour of the 

 colony is salmon-pink. 



