24 R. KIRKPATRICK. 
The autodermal pentactins (VII. 2b') are fairly numerous ; the odd proximal ray 
is spined. Fig. 2b’ shows a tauactin. The rays of the curious angular diactins 
(VIL., 2b*) form an angle of 60°. 
The hypodérmalia are pentactins (VII. 2c) with long, deeply-curved paratan- 
gential rays 1240 x 55p, tapering to a sharp point. In one or two instances these 
spicules project out a small distance, and might be regarded as basalia. 
The autogastralia (VII. 2d) are hexactins with slender, sparsely-spined 
cylindrical rays, each 188 xX 5°6p. 
Intermedia. The strobilocomes (VII. 2f, f') are 175 in diameter ; each primary 
vay (13°5p in length) ends in a cone or strobilus rounded at the distal end, and giving 
off a series of four verticils of long slender S-shaped rays, each tipped with a toothed 
disk ; the verticils increase in length from below upwards, the lowest and outermost 
being the shortest, and the highest and innermost the longest. The plumes of the 
secondary rays are more loosely tufted than is the case in most other species, where 
the rays of the verticils and the verticils themselves are more closely packed. 
The graphiocomes (VII. 2e, et) are 150” im diameter; each primary ray is 
7°25 in length and ends in a broad disk, from the whole distal convex surface of which 
a diverging tuft of fine raphide-like rays is given off. 
The microdiscohexasters (VII. 2¢, g') are of large size, being 60m im diameter ; the 
primary rays end in a circle of disk-tipped secondary rays surrounding a central cone 
continued into a ray ending in a disk. 
The new genus is near to Lophocalyz, but differs from it and from other genera of 
Lanuginelline in having no oxyhexasters. 
Pl. VIL, fig. 2, shows a thin section of one of the largest buds, which has an 
oscule and central cavity. 
The section has been made in a direction slightly oblique to the long axis, and 
shows the convex outer ends of the flagellated chambers; although several of these 
outer ends have been cut through, the artist has put them in, the figure being a 
combination one, and, I fear, slightly diagrammatic. 
W.Q., January 2, 1904. No. 14 Hole. 329m. (180 fms.). 
INDEX OF MEMOIRS REFERRED TO IN THE REPORT ON THE 
HEXACTINELLIDA. 
1, Carrer, H. J.—* On two new Sponges from the Antarctic Sea... .” Ann. and Mag. Nat. Hist., 
1872 (4) ix., p. 409. 
Carter, H. J.—* On the Genus Rossella ... .’ Ann. and Mag. Nat. Hist., 1875 (4) xv., p. 113. 
Hopason, T. V.—The Geographical Journal, April, 1905. 
Tsma, I.—Studies on the Hexactinellida.” Contribution iii. Journ. Coll. Sci., Tokyo, 1903, 
vol. xvili., art. 1. 
5. Ista, I.—*Studies on the Hexactinellida.” Contribution iv. Journ. Coll. Sci., Tokyo, 1904, 
vol. xviil., art. 7 (Rossellide),. 
6. Scuuuze, F. E.—‘ Challenger’ Report on Hexactinellida, 1887. 
Em fis 
