MOLLUSCA 405 
PFEIFFER, L. Descriptions of thirty new species of Helicea, belonging to the collection of H. Cuming, Esq. 
P. Zool. Soc. London, 1846, pp. 28—34. 
—. Descriptions of twenty new species of Helicea, in the collection of H. Cuming, Esq. Tom. cit. 
Pp- 37—41. 
——. Diagnosen neuer Landschnecken. Zeitschr. fiir Malak. rv. (1847), pp. 145—151 [ Zornatellina 
petitiana, Nn. sp., p. 149]. 
——. Descriptions of twenty-nine new species of //edicina from the collection of H. Cuming, Esq. 
P. Zool. Soc. London, 1848 [April, 1849], pp. 119—125. 
——. Nachtrage zur L. Pfeiffer Monographia Heliceorum: zu Vol. 11. Zeitschr. fiir Malak. vi. (1849), 
pp. 85—95. 
——. Beschreibungen neuer Landschnecken. Zeitschr. Malak. vu. (1850), pp. 65—80 [Helix 
disculus, n. sp., p. 68; cf. p. 153]- 
——. Nothwendige Vertauschung einiger Nahmen. Zeitschr. Malak. rx. (1852), pp. 62—64. 
—. Descriptions of fifty-four new species of Helicea from the collection of Hugh Cuming, Esq. 
P. Zool. Soc. London, 1851 [July to Dec. 1853], pp. 252—263. 
——. Descriptions of sixty-six new land-shells from the collection of H. Cuming, Esq. Op. cit. 1852 
[March to May, 1854], pp. 56—7o. 
——. Descriptions of nineteen new species of Helicea, from the collection of Mr Cuming. Op. cit. 
1853 [1854], pp. 124—128. 
—. Skizze einer Monographie der Gattung Achatinella. Malak. Blatt. 1. (1854), pp. 112—145. 
——. Versuch einer Anordnung der Heliceen nach natiirlichen Gruppen. Op. cit. 1. (1855), 
pp. 112—185. 
——. Descriptions of forty-two new species of He/ix, from the collection of H. Cuming, Esq. 
P. Zool. Soc. London, 1854, pp. 49—57. 
—. Descriptions of fifty-seven new species of Helicea from Mr Cuming’s collection. Tom. cit. 
1854 [May, 1855], pp. 286—208. 
——. Descriptions of twenty-seven new species of Achatinedla from the collection of Hugh Cuming, Esq., 
collected by Dr Newcomb and by Mons. D. Frick, late Consul-General of France at the Sandwich 
Islands. Op. cit. 1855 [March], pp. 1—7, pl. xxx. 
——. Descriptions of forty-seven new species of Helicea from the collection of H. Cuming, Esq. 
Tom. cit. [July], pp. 94—rot. 
——. Descriptions of nine new species of Helicea from Mr Cuming’s collection. Tom. cit. [August], 
pp. 106—108, pl. xXxxu. 
—. Descriptions of twenty-three new species of Achatinella, collected by Mons. D. Frick in the 
Sandwich Islands ; from Mr Cuming’s collection. Tom. cit. [Feb. 1856], pp. 202—206. 
——. Descriptions of sixteen new species of Achatinella, from Mr Cuming’s collection, collected 
by Dr Newcomb in the Sandwich Islands. Tom. cit. [Feb. 1856], pp. 207—210. 
—. Descriptions of five new species of Terrestrial Mollusca, chiefly from the collection of 
H. Cuming, Esq. Tom. cit. [Feb. 1856], pp. 210, 211. 
——. Weitere Beobachtungen tber die Gattung Achatinella. Malak. Blatt. 1. (1854—1855), 
pp. 1—7, 64—7o°. 
——. Versuch einer Anordnung der Heliceen nach nattrlichen Gruppen. Tom. cit. (1855—1856), 
pp. 112—185. 
——. Descriptions of twenty-five new species of land-shells, from the collection of H. Cuming, Esq. 
P. Zool. Soc. London, 1856, pp. 32—36. 
——. Descriptions of fifty-eight new species of Helicea from the collection of H. Cuming, Esq. 
Tom. cit. [March, 1851], pp. 324—336. 
—. Ueber die in Gould’s Expedition Shells beschriebenen und abgebildeten Landschnecken. 
Malak. Blatt. rv. (1857), pp. 29—37- 
