364 SPECIES OF THE SYSTEMA. 
Helix cavocolla, 
The Carocolla albilabris of Lamarck is now generally accepted 
as the representative of this species, and resumes the Linnean 
name in Pfeiffer’s admirable ‘ Monographia Heliceorum.’ ‘The 
conclusion has doubtlessly been arrived at from the “Testa 
maxima, facie H. lapicide” of the ‘Museum;’ for in many 
respects it reminds one strongly of the shell alluded to, and 
may be reckoned among our largest Helices. The cited figure 
of Argenville exhibits the general aspect of that species, and 
has even been ascribed to it: it seems, however, equally like 
inversicolor. Hence a reference in the revised copy of the 
‘Systema’ to plate 63 of Lister’s ‘ Historie,’ a recognised figure 
of C. albilabris, strengthens the established opinion. 
Helix cornucnrilttare. 
Unfortunately for us Linneus did not himself possess this 
shell, which from the first has been involved in deep obscurity. 
Miiller has omitted the species; Chemnitz has doubtfully 
quoted it among the synonyms of his Helhx malum-terre 
(Conch. Cab. vol. ix. pl. 129, f. 1142, 1143); Gmelin, whilst 
indicating his dissent to this conclusion by a note of interroga- 
tion, has nevertheless referred us (therein copying Schréter) to 
another delineation of the same species in Knorr (pt. 6, pl. 32, 
f. 2), yet also retained the Linnean reference to Gualtier, who 
has depicted a very different shell from the Chemnitzian one ; 
Lamarck has not adopted either appellation, but cited them 
both as synonyms of his H. gigantea; Dillwyn, without at- 
tempting to discuss the question of identification, has described 
the Chemnitzian species under the Linnean name: in this he 
has been followed by Deshayes and Pfeiffer. Yet a careful 
perusal of the details in the ‘Museum Ulrice’ suggests the 
gravest doubts of this identification. The “ apertura flavescens 
—margine undique fulvo, quasi ex crasso pigmento” is utterly 
opposed to the pure white tint of the mouth in malum-terre, of 
