374 SPECIES OF THE SYSTEMA. 
Linnean cabinet that will at all correspond with the Linnean 
characters. 
Helix Hispana. 
From the meagre succinctness of its description, and the 
absence of an illustrative reference, this species has not been 
recognised by the older conchologists; Miller, Chemnitz, 
Schréter, Gmelin, Dillwyn, &c., having alike been baffled by it. 
Dr. Pfeiffer formerly conjectured that it might have been 
identical with the H. cornea of Draparnaud, but the “ apertura 
suborbiculata” will not allow of this conclusion. In his Ap- 
pendix to that invaluable production the ‘Monographia Heli- 
ceorum’ he has, on the authority of Dr. Beck (‘teste Beck”’), 
affixed the name Hispana to what (vol. i. p. 347, No. 906) he 
had previously regarded as the planospira of Lamarck. Since 
the very scanty characteristics do not apply exclusively to that 
Helix, J cannot imagine upon what grounds this conclusion has 
been arrived at; assuredly it was not from an examination of 
the Linnean cabinet, where neither the planospira nor any 
species allied to itis present. Indeed, the nearest approach in 
features to the diagnosis which I could find there was in the 
Helix cellaria (Rossm. Icon. f. 527), a shell which by no means 
coincides with such undeniable precision as to ensure certainty, 
although the manuscript addition “ diaphana,” together with 
the previous “cornea” and “anfractibus teretibus” suggest 
Zonites as the section to which it probably belonged. 
Helix lutarta. 
The name lutaria (mud-dwelling) might induce a supposition 
that this most uncertain species was a member of some such 
fluviatile genus as Limnea; it is not unlikely, however, that 
our author only implied mud-coloured by this specific appella- 
tion, since the language of the ‘Museum Ulvrice’ encourages 
the idea that it rather belonged to Bulumus. Even this is con- 
jectural, for so succinct are the unillustrated descriptions of it 
