46 NILS HJ. ODHNER, MOLLUSCA. 
moderate conical apex and denticulations on each side of its base; uncini about 37 
in number with short spoon-like heads, which are bilaterally denticulated and grad- 
ually decrease towards the sides. — The radula differs from that of D. atrata 
(TRoscuen 1879, Taf. XXI, fig. 8) and that of D. sphaerula (ScHuPMAN 1908, pl. IX, 
fig. 3) only in having two denticles at the base of the cusp in the outermost lateral. 
FAM. NATICIDAE. 
Natica zebra Lamarck. 42 miles W. 8S. W., 70 feet (?*/s), 1 sp. h. 5.5 mm. 
Corresponds perfectly with specimens from the Philippines in R. M. — The Siboga 
Expedition found this species in the Java Sea (ScHEPMAN 1909). 
Fig. 9. Radula of Delphinula zonata n. sp. X 90. 
Vanikoro clathrata Rectuz. 45 miles W. 8S. W., 70 feet ('/c), 1 sp., h. and 
br. 5 mm; -42 miles W. S. W., 70 feet (*5/s), 1 sp., h. and br. 8.3 mm. Recorded 
from Persian Gulf and Mekran coast (MELVILL & STANDEN 1901), Queensland (HEDLEY 
1910), I. Bourbon and Polynesia (TRyYON 1886). 
FAM. HIPPONYCIDAE. 
Hipponyx australis Quoy & Garmarp. 45 miles W. S. W., on the spines of 
a Cidaris, 1 sp., 1. 4 mm. — Distribution: Maldives, Ceylon, Andaman Isl. (KE. A. 
Smiru 1903); Mauritius to Japan, Viti Isl., and New Zealand (‘TRyon 1886); Victoria 
(PrircHarRD & Gatiirr 1899); W. Australia (HEDLEY 1916). 
FAM. CAPULIDAE. 
Crepidula aculeata Guerin (Pl. 2, fig. 40). 45 miles W. S. W., 80 feet (°°/s), 
1 sp., 1. 20.5 mm (like C. echinus Broprrip; cf. Tryon, Man. of Conch., Vol. VIII, 
1886, pl. 39, fig. 63); 72 feet (*'/7), 1 small sp., 1. 3 mm; 45 miles W. 8S. W., 60—80 
feet ("*/7), 2 sps, max. 1. 13 mm, on the larger specimen of Delphinula distorta var. 
