= 5 7 



basal part is not divided by a groove, which is present in the figures and in the Siboga- 

 specimen. The specimen is small. 



3. Ancilla australis Sowerby. 



Sowerbv. Species Conch. Vol. I, part I, Ancillaria, p. 7, fig. 44 — 46. 



KlENER. Coq. Viv. Vol. I, Ancillaria, p. 9, PI. 5, fig. 2, 3. 



REEVE. Conch. Ie. Vol. XV, Ancillaria, fig. 7, (fig. 48 tricolor). 



Weinkauff. Martini-Chemn. Conch. Cab. Ed. II, Vol. V, Ancillaria, p. 15, PI. 5, fig. 3, 4; 



PI. 6, fig. 7, 8; p. 18, PI. 7, fig. 1, (p. 40, PI. 12, fig. 9 tricolor). 

 TRYON. Man. of Conch. Vol. V, p. 94, PI. 38, fig. 28, 30. 



Stat. 312. Saleh-bay, East coast of Sumbawa. 274 M. Fine, sandy mud. 1 Spec. 



The specimen is very young and agrees with the figures and descriptions of A. tricolor Gray. 

 I can but agree with Weinkauff's remarks, who dealing with this latter species says: "Sowerbv 

 bemerkt zu dieser Species: Diese prachtige kleine Schnecke mag wohl der Jugendzustand der 

 A. australis sein. Bei Exemplaren dieser letztere Species, die noch nicht durch Callus verdeckt 

 sind, bemerkt man das rothbraune und weisse Band auf den Spira, dass bei A. tricolor so deutlich 

 ist. Man fragt sich billig, warum eine solche Species erhalten geblieben ist". Probably those 

 authors who take it for a good species, have had no specimens of intermediate stages. 



4. Ancilla mamillata Hinds. 



HlNDS. Voy. Sulphur. Moll. PI. 11, fig. 7, 8. 



REEVE. Conch. Ie. Vol. XV, Ancillaria, fig. ia — c. 



Weinkauff. Martini-Chemn. Conch. Cab. Ed. II, Vol. V, Ancillaria, p. 21, PI. 6, fig. 5, 6. 



TRVON. Man. of Conch. Vol. V, p. 94, PI. 37, fig. 26 (mucronata var.). 



Stat. 256. 5°2Ó'.6S., I32°32'.5 E. Near Kei-islands. 397 M. Greyish green mud. 1 Spec. 



It is probable that the bad condition of the specimen accounts for the great depth at 

 which it has been trawled. It agrees with fig. 3 c of Reeve (1. c.) with its less developed callus. 

 The colour has faded, the shell being uniformly brown, probably by the chemical action at 

 the bottom. 



5. Ancilla Edgariana n. sp. PI. XVIII, fig. 4. 



Stat. 178. 2°40' S., I28°37'.5E. Ceram Sea. 835 M. Blue mud. 1 Spec. 



Shell elongately ovate, lower whorls faintly yellowish white, with white enamel above 

 and below, uppermost whorls porcellaneous-white, with traces of a brown line; whorls about 4, 

 with a rather thick layer of enamel on the spire, filling and obliterating the suture; spire rather 

 blunt, with convex outlines; sculpture of last whorl consisting of very fine growth-striae, only 

 visible under a lens and traces of microscopical spiral striae, which on the enamel have the 

 appearance of being scratched by an excessively fine needie; a sulcus runs just above the white 

 balteus, ending in a tracé of a tooth, which may be stronger in older specimens, a second 

 sulcus runs at the basal part. Aperture elongate, outer margin very thin (young?) columellar 

 margin with two folds; basal sinus moderately wide. Operculum corneous. 



