148 
MOLLUSCA. 
Theobald, Conch. Ind. pi. 16. figs. 2 & 6j arx (Bens.), iid. ibid. pi. 64. fig. 8; 
apicata (Blanf.), iid. ibid. pi. 64. f. 6. 
[<Si?sara] Helix pylaica (Bens.), iid, ibid. pi. 16. fig. 2j H. mammillarisy 
helicifera (Blanf.), and basseinensis (Bens.), iid. ibid. pi. 60. figs. 1-4, & pi. 80. 
fig. 7 j H, capessem and diplodon (Bens.), iid. ibid, pi., GO. figs. 6 & 0. 
Sayda : the quadrate, uon-aculeato form of the marginal tooth is ascer- 
tained also in S. jay ana (0. B. Ad.) by Bland and Binney, Ann. Lyc. N. 
York, X. p. 219. 
Helix circuiiifirmata (Redfield) and bermudensis (Pfr.) j the radula of both 
and the jaw of the latter prove that they must be placed among the Vitri- 
nacea. Iid. ibid. p. 221. 
Helix (Saydinella) didrichsenij sp. n., Morch, Yid. Medd. xi. p. 20, and 
J. de Conch, xx. p. 312, Nicobar Islands (coloration and sculpture as in 
Streptaxis ; peristome simple). 
Leucochroa may be replaced as a subgenus of Helix : jaw and radula of 
L. boissieri (Charp.) described; jaw smooth, with median projection, but 
marginal teeth subquadrate. Bland & Binney, 1. c. p. 220. 
L. tdtima, pressa, and accola, spp. nn., Mousson, Malacol. Can. pp. 19-21, 
pi. 1. figs. 34-36, 37-39, 40 & 41 (=Pfeifier, Novitat. Conch, iv. pp. 67-59, 
pi. 119), Fuerteventura. 
Odontognatiia and Aulacoonatiia. 
Pallifera dorsalis (Binn.) climbs on trees ; jaw distinct from that of Teben- 
nophorus [^Philomycus']. Bland & Binney, P. Philad. Ac. 1872, p. 137. 
Avion. For critical remarks concerning the German species, cf. H. v. 
Maltzan, Arch. Ver. Mecklenb. xxvi. pp. 66 & 67. 
Avion ater (L.), var. albus [Miill.], from Norway, described by Jensen (N. 
Mag. Naturv. ?) 1872, p. 167 (sep. print, p. 55), Laugesund, Norway ; var. n. 
ctnereonebulosus, id. ibid. p. 175 (p. 73); var. medkis, id. ibid. p. 176 (p. 74), 
pi. 1. tig. 11, both from Arendal, Southern Norway. 
A. fuscus, var. quadrifqsciatus, id. ibid. p. 184 (p. 82), Aamodt, Norway ; 
var. mediuSf allied to melanocephalus (F. B.), id. ibid. p. 187 (p. 85), Lillesand, 
Norway. 
A. melanocephalus (Fauve Biguet)= young of empiricovum (Fdr.) ; A. brun- 
neus (Lehmann) is probably in the ^ame case. Seibert, Nachr. mal. Qes. 
1872, pp. 83-87. 
A. leucopheeus (Normand); specific distinctness defended by Van den 
Broeck, Bull. Mal. Belg. vii. p. xlvi. 
A. I'ubiginosuSf sp. n., tenellus (Millet), and bouvguignatiy sp. n., described 
and figured by A. Baudon, M4m. Soc. Oise, vii. pp. 4-9, pi. 1. figs. 1-3, 4-7, 
and pi. 3. figs. 6-11, Northern France. [The second appears very near to, if 
not identical with, melanocephalus (Fauve Biguet), the third with fuscus 
(Mull.).] 
Geomalacus mabillii, sp, n., and G. hiemalis (Drouet), described and figured 
by A. Baudon, 1. c. pp. 11 & 12, pi. 1. figs. 8-12, and pi. 2. figs. 2-5 [= young 
individuals of Avion, teste Heynemann, Mal. Blatt. 1873]. 
HemphUlia, g. n., Bland & Binney, Ann. Lyc. N. York, x. p. 208-211, pi. 9. 
figs. 1, 3, 6, 16-17. Shell unguiform, like that of \^H'\omalonyx, external ; jaw 
ribbed, as in Avion ; lingual membrane as usual in the Helicidce, containing 
