64 MolL 
MOLLUSCA. 
Viquesnelia atlantica (Morelet & Doumet). Mantle large, submedian, 
tail much compressed, caudal mucus-gland absent ; mandible smooth, its 
free edge forming a re-entrant right angle ; teeth of the radula spini- 
form, median tooth smaller ; flagellum and dart sac absent, spermato- 
theca present ; shell rudimentary, concealed within the mantle, oval, 
depressed, with a rudimentary spire. Azore Islands. M. F. d’Arruda 
Furtado, Ann. N. H. (5) vii. pp. 250-256, pi. xiii. 
Parmella elongata, sp. n., Dohrn, Nachr. mal. Ges. 1881, p. 66, Singa- 
lang, Sumatra. 
Vitrina angelicce (Beck), from the Lofoten Islands ; Westerlund, CEfv. 
Ak. Forh. 1881, p. 35. 
Vitrina alpestris^ sp. n., Olessin, Mal. Bl. (2) hi. p. 185, Weissenbach, 
Ahrenthal, Tirol, 2300 metres above the sea. 
Vitrina hicolor^&p. n., Westerlund, QSfv. Ak. Forh. 1881, p. 51, Switzer- 
land and Pyrenees. 
Vitrina {Phenacolimax) costce^ sp. n., Paulucci, Bull, Soc. mal. Ital. vii. 
p. 72, pi. 1 b, fig. 1, Monte Morrone, Abruzzi. 
Vitrina {Phenacolimax) sieversi (Mouss.) = homarowi (Bottg.), Trans- 
caucasia ; Bottger, JB. mal. Ges. viii. pp. 189 & 190. 
Vitrina {Oligolimax) rugosa, sp. n., Paulucci, Bull. Soc. mal. Ital. vii. 
p. 75, pi. 1 h, fig. 2, Abruzzo citeriore. 
Vitrina hyalea^ sp. n., Bock, P. Z. S. 1881, p. 631, pi. Iv. fig. 6, High- 
lands of Padang, Sumatra. [? an Austenia. — Bec.] 
Trochovitrina^ subg. n. of Vitrina (Schacko, 1880), shell keeled ; 
V. {Tr.) lederi (Bottg.), jTanscaucasia, shell, radula, and jaw distinct 
from those of Lampadia (Lowe) ; Bottger, JB. mal. Ges. viii. pp. 188 
& 189. 
Durgella (Blanford, 1869). Two very ample shell-lobes ; mucous pore 
well developed ; jaw thin, with very slight central 'projection ; radula 
broader than long, with a central minute tricuspid tooth, lateral teeth 
all similar, minutely 6-cuspid or pectiuiform ; shell thin or membrana- 
ceous, polished, the columellar margin having no solidity ; amatorial 
sagitta present in the Burmese form, absent in the Indian. D. levicula 
(Benson), Tenasserim, and assamica, sp. n., Assam, shell, living animal, 
and generative organs of both described; Godwin-Austen, J. L. S. xv. 
pp. 291-296, pis. XX. & xxi. 
Durgella christiance (Theobald, Helicarion), Andaman Islands, anatomi- 
cally described from a spirit-specimen ; id. Ann. N. H. (5) viii. pp. 
377-379. 
Helicarion {Austenia) magnijicus (Godwin-Austen) and resplendent 
(Nevill) figured ; Nevill, J. A. S. B. 1. pt. 2, p. 129, pi. v. figs. 23 & 24. 
Difference between Girasia and Austenia; id. ibid. 
Helicarion imperator (Gould, Vitrina). Living animal from a sketch 
by Gerlach and shell ; Martens, Conchol. MT. i. p. 74, pi. xiii., Hongkong. 
Helicarion gomezianus (Morelet, Vitrina) ; id. SB. nat. Fr. 1881, p. 122, 
Angola. 
Microcystis subcicercula (Mousson, MS.) and discordica [!], spp. nu., 
Garrett, Terr. Moll, of Cook’s Island [1880 ?]. 
Nanina. Historical note on this generic name, preferable to Macro- 
