MELVILL: THE PRINCIPLES OF NOMENCLATURE. 469 
Tritonidea Swz., 1840. Nassaria /272/, 1807. 
Cantharus Aoltez, 1798 (7. & A. Hindsia A. & A. Ad., 1853. 
Adams, 1853). Oliva Brze., 1789. 
Boe ae Dactylus A7/ein. 1753. 
istorsio, Bolz., 1798. Ancilla Lamk., 1799. 
ae ee oe Dipsaccus AZezzz, Le in pte. 
BSUGIAES MJ EO, Eburna Zamk., 1801 (non 1822) in pte. 
*Aquillus J7¢/t., 1810. Anaulax Roissy, 1805. 
Lotorium J///7., 1810. Ancillaria Lamk., 1811. 
Lampusia Schom., 1817. Latrunculus Gray, 1847. 
Tritonium o/t., 1798. Dipsaccus A7/ez7, 1753, in pte. 
ne Link, 1807 (non Afidl., Eburna Lamé., in pte. 1822 (non 1801) 
1776). Fasciolari 
: asciolaria Lamk., 1799. 
to ees fOX- Colus Bolten, 1798. 
Pseudoliva Gray, 1846. 
Gastridium Sowé., 1842 (non A/odéeer, 
Gyrineum Zizk, 1807. 
Rana Hamph., 1797. 
Bursa Bolte, 1708. 
Bufo (Buffo) A/ift., 1810. WS ews Hae 
Ranella Lamk., 1812. Fulgur Mefe. “Ore 3: 
Dorsanum Gray, 1847. Busycon Golt., 1798. 
Pseudostrombus Ave, 1753. Pyrula Lamk., mm pte., 1799. 
Turbinella Zamzk., 1799. 
IMa@ese 2 ence Mazza A7ein, 1753- 
Se ee I oe aa Xencus Bolten, 1798. 
Leiodomus, 1840. Cynodonta Schz., 1817. 
Buccinanops, 1841. Vasum #olte, 1798 (non Lzvk, 1807). 
Scolymus Szv7z., 1835. 
Cyclonassa Szwz., 1840. eek 
Neritula Plancus, 1730. Cymba Brod. & Sow., 1826 (non 
Cyclops A/¢/t. Mill. . Gand G.,-1827). 
Gene es Tee HU RUES) Cymbium Klein, 1753 (non Gua/tie7, 
1742, nec A7/tft., 1810). 
Acanthina 7. de Waldh., 1807. Vetus Adanson; 1757. 
Monoceros Lamk., 1809 (non Meusch. Melo Humph., 1797, Reeve, 1841. 
1707, nec Bl. Sch., 1801, Pisces). Cymbium A/¢ft., 1810, non K7ein, 175 3 
Bullia Gray, 1835. 
Sistrum J7/¢/7., 1810. +Vulpecula Blaznv., 1824. 
Pentadactylus A7Zezz, 1753. Turricula Avez7, 1737. 
Ricinula Lamk., 1812. Vexillum Lolten, 1798. 
Morula Schzm., 1817. Turris A7/tft., 1810, non Fo/t., 1797. 
Concholepas (’A7-v.,1757) Law. 180rtImbricaria Scham., 1817. 
Conchopatella Chem., 1788. Conohelix Szwz7., 1840. 
Conidea Sw7z., 1840. 
Rapella Szz., 1840. : 5 ; 
Rapa Klein, 1753. Pyrene Bolten, 1798. 
Bulbus Hamph., 1797. Marginella Zamk., 1799. 
Pyrula ae Fs pte., 1799. Porcellana Ad/anson, 1757 (nonRamph. 
nec AZ). 
Pyrella Szv., 1835. Pterygia Lzzk., 1807. 
Tudicla Bolten, 1708. Marginellus Mifi. ; I1SIO. 
Spirillus Sozwd., 1842. Pheenospira Azzds, 1840. 
* cf. G. F. Harris, Cat. Test. Moll. in Geol. Dep. Brit. Mus., part 1, p. 161, 1897. 
The author discards Aguzd/us Mtft. type cutaceus L., owing to similarity of sound to 
Aguila in Ornithology, and prefers to use Lotorium, also of Montfort, which comes next 
in sequence. Personally, I cannot see why Aquillus should not stand. It is probably 
derived from Agua, there is a species aguwatilis, and we have both Weeuwla and Vucu- 
Jana, for instance, admitted, and other similar sounding terms. 
} I prefer to make these genera entirely sub-generic to JZztra, 
