50 Moll. 
MOLLUSCA. 
a few metres above the breaking of the waves. T. perrieri , sp. n., Cape 
Dakar, Coast of Senegal. Rochebrune, Bull. Soc. Philom. 1881. Ab- 
stract in J. de Conch, xxx. p. 249 (the author places it in the Cyclosto- 
macece ) . 
Rissoidje. 
Rissoina assimilis , dimidiata, and angulata , spp. nn., Jickeli, JB. mal. 
Ges. ix. pp. 368 & 369, Red Sea. 
Rissoa : 2 plates without letterpress by Weinkauff in Kuster’s Conch. 
Cab. pt. 318. 
Cingula harpa (Verrill, 1880), globulus (Moller), areolata (Stimps., as 
Turritella),jan-mayeni (Friele), and castanea (Moller), New England and 
Gulf of St. Lawrence ; Verrill, Tr. Conn. Ac. v. pp. 523-525, pi. xlii. 
fig. 8, pi. xliii. figs. 1-3, and pi. lviii. fig. 6. 
Pachydrobia spinosa var. n. acuminata , Ancey, Le Nat., 1882, p. 69, 
Cambodia. 
Amnicola zopissa, sp. n., and granulum (Villa), Sardinia; Mme. Pau- 
lucci, Bull. Soc. mal. Ital. viii. pp. 338 & 339, pi. ix. figs. 8 & 9. 
Amnicola siculina , sp. n., Benoit, Nuov. Catal. p. 103, Sicily. 
Hydrobia ortygia and calcarce , spp. nn., id. 1. c. pp. 159 & 160, Sicily. 
Hydrobia brazieri , petterdi , and angasi , spp. nn., and victories (Tenison 
Woods), Australia, E. A. Smith, J. L. S. xvi. pp. 269-271, pi. vii. figs. 
20-23. 
Thermohydrobia zinnigasensis, sp. n., warm springs of Zinnigas, Sar- 
dinia, and aponensis (Martens), Abano ; Mme. Paulucci, Bull. Soc. mal. 
Ital. viii. pp. 340 & 341, pi. ix. figs. 6 & 7. 
Potamopyrgus cumingianus (Fischer), from the northern part of the 
north island of New Zealand and valley of the Waikato, is distinct as 
to radula from P. corolla (Gould), which occurs in the South Island, 
and from antipodum (Gray), throughout the whole of New Zealand ; 
their synonymy explained. P. pupoides , sp. n., estuary of the Avon and 
Heathcote Rivers, N. Z. The two first-named only live in fresh water, 
the third extends also into brackish water, to which the last is confined. 
Hutton, Tr. N. Z. Inst. xiv. pp. 143-146, pi. i. figs. a-h. 
Bythinella schotzii [ scboltzii\ from Silesia, living animal described ; 
Merkel, Nachr. mal. Ges. 1882, p. 66. 
Belgrandia (Bourg.), gibba (Drap.), S. France, lusitanica (Paladilhe), 
Coimbra, targioniana (Paulucci, MS.), sp. n., Florence, thermalis (L.) = 
saviana (Issel), S. Giuliano, near Pisa, delpretiana (Paulucci, MS.),sp. n., 
Viareggio, Upper Italy, gibberula (Paladilhe), S. France, moitessieri 
(Bourg.), S. France, varica (Paget), Nice, cylindracea (Paladilhe), Dep. 
Aube, bourguignati (St. Simon), Toulouse, sequanica (Bourg.), Troyes, 
marginata (Mich.), Dep. Var and Pyrenees-orientales, described and 
figured, and some dubious and fossil species enumerated by Clessin, Mal. 
Bl. (2) v. pp. 132-151, pis. li. & iii. 
Paludinella sorgica and provincialis, spp. nn., Coutagne, Note, Fn. mal. 
Rhone, i. [1881], Vaucluse and Rognac, S. France. 
Vitrella (Clessin), quenstedti (Wiedersh.), Falkenstein-cave, Wiirttem- 
berg, perkhaueri (Clessin), Rothenburg, Bavaria, pellucida (Benz.), Cann- 
