338 
THE VOYAGE OE H.M.S. CHALLENGER. 
Family II. Corallistida:. 
Genus 1. Corallistes, 0. Schmidt. 
Corallistes (?) aculeata, Carter. 
Corallistes aculeata, Carter, Ann. and Mag. Nat. Hist., ser. 5, vol. vi. p. 143, pi. vii. fig. 45, 
1880. 
Sponge. — Small, about 6 mm. in diameter. Incrusting (?). 
Spicules. — I. Megasclere. Desmas, quadriradiate, those of the outermost layer 
definitely orientated, three basal rays proceeding inwards, and the fourth or apical 
outwards, at right angles to the surface. Basal rays, cladose ; apical, simple, conical, 
elongated, subsinuous, 0’08 mm. by 0‘21 mm. in diameter at the base (? 0'21 mm. long 
by 0‘08 mm. in diameter), bearing rounded conical tubercles, arranged in more or less 
circular rows around the lower two-thirds of the ray ; syzygial tubercles angular. 
II. Megasclere (?). 
Habitat. — Gulf of Manaar, Indian Ocean, under 65 fathoms. A larger specimen, 
12 mm. in diameter, is said by Carter to be preserved in the British Museum; it was 
obtained from Kendrick Island, Japan (lat. 24° 13' N., long. 136° 13' E.). 
Remark. — Carter does not state that the desma is monocrepid, and it is quite 
possible that it may be tetracrepid, in which case the sponge might be related to 
Kaliapsis, Bowerbank. 
Corallistes elegantior, 0. Schmidt. 
Corallistes elegantior, 0. Schmidt, Spong. Atlant. Gebiet., p. 23, pi. iiL fig. 5, 1870. 
„ „ Carter, Aim. and Mag. Nat. Hist., ser. 4, vol. xii. p. 439, 1873. 
„ „ Zittel, Abhandl. d. k. baier. Akad. d. Wiss., pp. 103, 120, 1878. 
Sponge. — A fragment. 
Spicules. — I. Megascleres. 1. Desma, cladi long, slender. 2. DicTiotrisene, cladi 
slender, smooth. 
II. Microscleres (?). 
Habitat. — Portugal. 
Corallistes (?) elegantissima, Carter. 
Corallistes elegantissima. Carter, Ann. and Mag. Nat. Hist., ser. 5, vol. vi. p. 144, pi. vii. fig. 47, 
1880. 
This species is founded on isolated desmas, occurring on a “Melobesian” nodule, 
from the Gulf of Manaar, at a depth of under 65 fathoms. 
