218 RECORDS OF THE AUSTRALIAN MUSEUM. 
GBEMMULA HOMBRONI om. 1200. 
Pleurotoma fusce Hombron and Jacquinot, Voy. Pole sud. Zool., iv., 1853, 
p- 111, pl.xxv., figs. 19,20. Id. Smith, Proc. Zool. Soc.. 1879, p. 186, 
and Ann. Mag. Nat. Hist. (7), xiii., 1904, p.456. Id. Sturany, Denk. 
Math. Nat. K. Akad. Wiss. Wien., Ixxiv., 1903, p. 229, pl. in., fig. 3. 
Id. Schepman, Siboga Exp. Mon., xlixe., 1913, p. 402. Id. Melvill, 
Proc. Malac. Soe., xii., 1917, p. 144. (Not Plewrotomu fusca C. B. 
Adams, Proc. Bost. Soc. Nat. Hist., 11., 1845, p. 4.) 
Hub. Queensland :—Torres Strait (type, Hombron and Jacquinot). 
GEMMULA MONILIFERA Pease. 
Plenrotoma moniliferu Pease, Am. Journ. Conch., 1870, p. 68. Id. Wein- 
kauff, Jahrb. deut. malak. Gesell., ii., 1876, p. 289, pl. ix., figs. 1, 3. 
Pleurotomu gemmuta Brazier, Proc. Linn. Soc. N.S.Wales, 1., 1876, p. 151 
(not Plewrotoma gemmatu Reeve). 
Hab. Queensland:—11 fathoms, Darnley Island (Brazier); 5 to 8 
fathoms, Murray Island (self). 
AsTHENOTOMA Harris and Burrows. 
Asthenotomu Harris and Burrows, Hocene and (ligocene Beds of Paris 
Basin, 1891, p. 113, nom. nov. for Oligotoma Bellardi, preoce. Id. 
Cossmann, Hssai Paleoconch. Comp., ii., 1896, p. 104. Id. Sacco, Moll. 
Terr. Piemonte, xxx., 1904, p. 51. Jd. Dall, Proc. Nat. Mus., liv., 
1918, p. 322. 
Oligotomu Bellardi, Mem. Acad. Roy. Sci. Turin (i.), xxix., 1875, p. 235, 
type Plewrotomu busteroti Desmoulins. Id. Jousseaume, Bull. Soc. Zool. 
France, viii., 1883, p.197. Id. Cossmann, Cat. Ilustr. Coq. Foss. Paris, 
iv., 1889, p. 255 (not Oliyotoma Westwood, Trans. Linn. Soe., xvil., 
1836, p. 373). 
Microdrillia Casey, Proc. Acad. Nat. Sei. Philad., lv., 1903, p. 276, type 
Plewrotoma cossmanni Meyer. 
Tomopleuru Casey, Trans. Acad. Sci. St. Louis, xiv., 1904, p. 138, type 
Plewrotoma nivea Phillipi. 
Asthenotoma is founded on a Miocene fossil, Plewrotoma basteroti 
Desmoulins,? which is co-generic, as Jousseaume has explained, with 
certain recent Indo-Pacific shells. It appears to me to be nearly related 
to Turris, with which spiral ridges deep within the throat and a smooth 
mucronate apex associate it. From Jwrris it differs by smaller size, bent 
columella, very short and upturned canal, a widely gaping instead of a 
linear notch, and by the radial sculpture. The operculum in a specimen 
of A. nivew Philippi, dvedged at Karachi, and kindly given to me by Dr. 
J. C. Melvill, is oblong with a subterminal nucleus (Pl. xlii., fig. 4). 
From the Australian Tertiary, Professor Tate! has noted Asthenotoma 
tatei Cossmann, and Plewrotoma consutilis Tenison Woods. 
. 9 Desmoulins—Act. Linn. Soc. Bordeaux, xii., 1842, p. 156. 
10 Tate—Proc. Roy. Soc. N.S. Wales, xxxi., 1898, p. 398. 
