St. Francis Island, 3 quite fresh; 35 fathoms, 1 dead; 55 
fathoms off Cape Borda, several dead; 110 fathoms off Beach- 
port, 2 dead. . 
S027 44774 Am. se 
Mangilia impendens, n. sp. Pl. xxvii., fig. 3. TAO) 
Shell solid, white, of 7 whorls, including the blunt pro- 
toconch of 2 smooth depressed convex turns. Spire-whorls 
sloping, swollen above the linear somewhat undulating suture, 
and barely swollen below it. Base slightly contracted. Aper- 
ture oblong-oval, narrower behind, widely open in front, with 
a shallow notch. Outer lip simple, sharp, thickened by a 
marked yarix outside, which ascends roundly at the suture 
and bounds a shallow, wide posterior sinus, profile convex, 
barely sinused anteriorly. Axial coste roundly trigonal, sin- 
uous, undulating the upper suture, most valid at the swell- 
ing of the whorl, half as wide as the interspaces, vanishing 
towards the base, and becoming obsolete towards the aper- 
ture. Very crowded spiral incisions all over, and still finer 
sinuous axial growth scratches, finely granulating the sur- 
face. 
Dim.—Length, 6°4 mm.; of body-whorl, 4°4 mm.; 
breadth, 2°5 mm. 
Locality.—Type dredged in Gulf St. Vincent, with 23 
others; 14 fathoms off Ardrossan, 1 alive; in 24 fathoms off 
sJewland Head, 1 dead. 
Diagnosis.—lt approaches M/. hexragonalis, Reeve, but 
this is a longer shell, with a sharp  three-whorled 
brown protoconch, and with straighter, narrower ribs, and 
much more numerous spiral incisions. 
Mangilia hexagonalis, Reeve. 
Pleurotoma hexagonalis, Reeve, Proc. Zool. Soc., London, 
1845, p. 118; also Conch. Icon., 1845, pl. xxxii., sp. 293. Type 
locality—*‘Philippines.’’ 
Mangilia hexagonalis, Reeve, Tryon, Man. Conch., 1884, 
vol. vi., p. 251, pl. xx., figs. 1, 4; Sowerby, Proc. Mal. Soc.. 
London, 1896, vol. ii., p. 30, ‘Gulf St. Vincent.” 
Dredged in 9, 10, 12, 14, and 20 fathoms in Gulf St. 
Vincent and Spencer Gulf, alive, rare. Taken on the beach 
at RR Ie ay es 
(WELLOLE Aapthitiorrs LA Paya! 
Mangilia alticostata, Sowerby. “7 / 7 
Mangilia alticostata, Sowerby, Proc. Mal. Soc., London, 
1896, vol. ii., p. 31, pl. iii., fig. 16. Type locality—“Gulf St. 
Vincent’?; Hedley, Proc. Linn. Soec., New South Wales, 1901, 
vol. xxvi., p. 17, ‘‘Port Jackson.’’ 
Dredged in 12, 14, 15, and 20 fathoms in Gulf St. Vin- 
cent, rather rare; taken in Wallaroo Bay (Dr. Gosse): in 
