4 INTRODUCTIO. 
della, Auricula c. subgeneribus: Carychio, Auricula, Cassidula, 
Conovulo), adoptat. 
Cl. Thompson 1840 (Moll. Irel. p. 28) nomen a Grayo 
1824 propositum recipit. 
Cl. Swainson 1840 (Malacol p. 343) genus AMelam- 
podem (subgenera: Geovula, Pedipes, Scarabus, Melampus, 
Rhodosioma) 1n. "Turbinis, subfamilia Turbidarum, collocat. 
... Cl. Gray 1840 (in Turt. Man. ed. nov. p. 220) primus 
familiam Auriculidarum inter Pneumonobranchia inoperculata 
aquaülia bene circumscripsit *), genera in Britannia obvia enu- 
merans: Carychium, Acmen et Conovulum. Lodem nomine 
Auctor in operibus ulterioribus familiam designavit: 1842 in 
Syn. Cont. Brit. Mus. p. 70. 91 (ubi familia quinta Pneumo- 
nobranchiatorum genera complectitur: Auwriculam, Melampodem, 
Sidulam, Traliam, Detraciam, Pedipedem, Marinulam, Ovatel- 
lam, Leuconiam, Scarabum, Chilinam, Carychium, Acmen), 
1847 in Proceed. Zool. Soc. XV. p. 179 (genera: Auricula, 
Melampus, Cassidula, Pedipes, Marinula, Ophicardelus, Alexia, 
Leuconia, Scarabus, Carychium, Acmea) et 1850 in M. E. 
Gray Fig. of Moll. Anim. IV. p. 118 (Genera: Auwricula, 
Melampus, Cassidula, Pedipes, Ophicardelus, Alevia, Scarabus). 
Cl. Cantraine 1841 (Malac. médit. p. 167) eodem no- 
mine in quinta familia Pulmonatorum genera Cargchium et 
Auriculam designat. 
Cl. D'Orbigny 1841 (Moll. Cub. I. p. 137) familiae 
Auriculidarum genera Carychium, Scarabaeum et Auriculam 
adnumerat. 
L. Pfeiffer 1841 (Symb. hist. Helic. I. p. 4) familiam 
Auriculaceorum inter Gastropoda coelopnoa gymnostoma dicera 
admisit et 1853 (Zeitschr. f£. Malak. X. p. 8) exactius adum- 
bravit, duasque subfamilias proposuit: Melampea. et Auriculea, 
adoptata etiam in Synopsi Auriculaceorum (Malak. Bl. 1854. 
9. 140). 
G. B. Sowerby jun. 1842 (Conch. Man. ed. II. p. 77) 
quoad nomen et locum familiae Dlainvilleum sequitur. 
Cl. Reeve 1842 (Conch. syst. II. p. 103) in familia 
Gastropodorum, eodem nomine designata, genera admitüt: 
Auriculam (incluso Pedipede), Scarabum, Chilinam — sequente 
A. Catlow 1845 (Conch. Nomencl. p. 178). 
Auriculata Sismonda 1842 (Syn. an. invert. p. 26) 

*) The animal with an elongated foot, an elongate ringed muzzle, two 
subcylindrieal tentaeles, with the eyes near the inner side of their base; 
body spiral, placed on the centre of the foot, and covered with a thin 
mantle, with a thickened edge, which is itself covered with an external spi- 
ral shell, which has a plaited pillar in all its ages. (Gray l. c.) 
