GASTROPODA (PULMONATA). Moll. 83 
Planorbis mauritianus (Morelet) is distinct from compressus (Hutt.) ; 
Morelet, J. de Conch, xxx. p. 104. 
Planorbis gilberti (Dunker), Queensland, fragilis (Brazier), Queens- 
land, essingtonensis , sp. n., Port Essington, and macquariensis , sp. n., Mac- 
quarie River ; E. A. Smith, J. L. S. xvi. pp. 294 & 295, pi. vi. figs. 30-35, 
pi. vii. figs. 1-6. 
Segmentina australiensis, New South Wales, and victorias , South Aus- 
tralia, spp. nn., id. 1. c. p. 296, pi. vii. figs, vii.-xiii. 
Lantzia (Jousseaume, 1872) = Erinna (H. & A. Adams, 1855) is dis- 
tinct from Lithotis by the position of the eyes ; Morelet, J. de Conch, 
xxx. p. 104. 
Latia neritoides (Gray) : eyes at the outer bases of the tentacles, on 
jaw, median tooth of the radula bicuspid, reflected part of the lateral 
teeth oblique to the base, single-cuspid, blunt ; Hutton, Tr. N. Z. Inst, 
xiv. p. 156, pi. iv. figs, e & p. 
Gundlachia , septum not always present ; Gibbons, J. of Conch, iii. 
p. 267. 
Gundlachia } species not determined, found in the “ Sucker ” brook, vil- 
lage Canandaigua, Western New York ; J. M. C<J><fke, Am. J. Sci. (3) 
xxiii. p. 248. 
Ancylus. S. Clessin concludes his monograph in Kiister’s Conch. Cab. 
pt. 316, pp. 41-80, pi. ix., bringing up the number of described species to 
87. A. expansilabris , Germany, dohrniamis , New Zealand, striatulus , 
Greece, oregonensis, Oregon, par anensis (Doring, MS.), Paraua, the largest 
species, 12 mm. long, manillensis , Manilla, spp. nn., pp. 51, 54, 55, 66, 69, 
& 71, all figured in previous plates. 
Ancylus dickinianus , sp. n., Benoit, Nuov. Cat. p. 148, Lentini, Sicily. 
Ancylus clessinianus , sp. n., Jickeli, JB. mal. Ges. ix. p. 366, Alexandria. 
Ancylus australiensis (Tate) ?, E. A. Smith, J. L. S. xvi. p. 297, pi. vii. 
figs. 36 & 37. 
AmPHIBOLIDtE. 
Amphibola avellana (Gm.) Correction of a former anatomical descrip- 
tion : no jaw, median tooth of the radula witfyS-6 lateral cuspids, lateral 
tooth single, subquadrate, variable, marginal teeth needle-shaped ; Hut- 
ton, Tr. N. Z. Inst. xiv. pp. 156 & 157. pi. iv. figs, f, o, & w. 
SlPHONARIIDAC. 
Anatomical description of Siphonaria australis (Q. G.) by F. W. Hut- 
TOri. “ The gills are not free, but merely folds of the integument cross- 
ing between two large vessels in the walls of the respiratory chamber ; 
evidently they are adaptive in origin, and not homologous with the gills 
of other Mollusca. The interior of the respiratory chamber and the 
gills are richly ciliated ; the animal seems to respire air and water indif- 
ferently. The respiratory orifice is often seen open, both in the air and 
under water.” The reproductive and nervous systems, egg-masses and deve- 
lopment are also described. The author comes finally to the conclusion 
