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young forms of Sarcophytum glaucum , as marked for instance by the character, of the clubs 
and by the size and number of the siphonozooids. 
A young colony from Station 133, like a long-stalked mushroom, cream-brown in colour. 
The stalk rises to a height of 3.1 cm. and has an average diameter of 1 cm. It shows near 
its base numerous large spindles which mark Sarcophytum glaucum and, as Miss Pratt observes, 
approach those of the genus Sclerophytum. The capitulum is almost circular, with a diameter of 1.5 cm. 
The autozooids, naturally few in number, have an aperture diameter of about 1 mm.; 
the siphonozooids are distinctly visible with a lens, and there may be two to four in a straight 
line drawn between two autozooids. 
The spicules include the following forms : 
(a) in the stalk, large spindles, pointed at the ends, densely covered with very compound warts, 
sometimes so densely that an appearance of rows results; they vary in length up to 1.4 mm., 
and in breadth to 0.17 mm.; 
(p) abundantly in the capitulum, narrow spindles, with relatively few prominences, mostly 
simple; maximum length 0.8 mm., and breadth 0.07 mm.; 
(z) in the capitulum there are also small pseudo-clubs, of diverse lengths, varying up to 0.4 mm. 
Both small spindles and clubs tend to be very closely appressed; 
(d) in the stalk numerous short stout clubs, which tend to interlock. They are heavily warted, 
and on surface view look like the dumb-bells figured for A. durtim by Miss Pratt ; average 
length 0.1 mm. and maximum breadth 0.04 mm. 
The large stalk spindles (a) may have simple prominences, but in most cases they are 
densely covered with warts which are extremely compound, like those figured for A. densum by 
Miss Pratt. 
Another small specimen, from Station 123, with a narrow stalk of 1.9 cm. in height, 
and a disc-like capitulum with diameters 1 cm. and 0.7 cm., has similar superficial characters 
and approximately the same types of spicules. The stalk is softer, but the typical large spindles 
occur at the base. 
A young specimen from Station 240, Banda, has a total height of 2.4 cm., of which 
2 cm. is stalk. The capitulum has diameters 1.5 and 1 cm. The spicules are of the same 
general type, but (1) the narrow spindles of the capitulum are distinctly smaller and more 
delicate, (2) the large heavily tuberculate spindles of the stalk-base do not show the row-like 
appearance of tubercles, seen in other specimens. There is the same matting together of 
short stout heavily warted clubs. We are convinced that small degree-differences in strength or 
robustness of spicules are without systematic importance, especially in young colonies. 
A young colony from Station i8t of a yellowish colour, a soft mushroom-like capitulum 
and a firm cylindrical stalk. The diameters of the capitulum are 1.8 and 1.3 cm. The diameter 
of the stalk is almost uniform, 5 mm., and the outline is nearly cylindrical. The height of the 
colony is 3 cm., to which the stalk contributes 2.3 cm. The capitulum is thickly covered with 
unretracted polyps, whose tentacles show on each side a single row of short blunt pinnules, 
supported by warty rodlets. Round the bases of the autozooids are numerous very distinct 
siphonozooids, filling up the intervals, but without crowding. The spicules show a very close 
resemblance to those figured by Burchardt for A. glaucum. A frequent size for the densely 
