INDEX TO THE HISTORIA CONCHYLIORUM. 
10 
Tab. Fig. 
nearly allied to the Helix volvulus of Mulier, that a figure like this is almost 
equally referable to either. In the Descriptive Catalogue, Helix volvulus has been 
described for the Helix Oculus Capri of Linneus; but this synonym is disputed 
by Ferussac, and he considers his Helix unguicula to be the Linnean species. 
76- 76- Helix Pellis Serpentis. 
77- 77- I a m unacquainted with this shell, vvhich constitutes the Helix No. 46 . of Schroetefs 
Einleitung; and the figure has been copied by Klein in his Meth. Ostracolog. 
t. 1 . f. 17 . 
78- 78. Helix ericetorum. Draparnaud says, that the a of Mulier is his Helix cespitum; and 
that the shell here figured, which is every where called the Helix ericetorum of 
Mulier, is the /3 of that species. 
— 79- Helix strigato; and the uppermost figure has been copied by Klein in his Meth. 
Ostracolog. t. 1 . f. 12 . 
79- 80 . Helix Algira. 
80 a. Helix Olivetorum of Gmelin, which is nothing more than a young shell of Helix 
Algira. 
80. 81. A variety of Helix albella. 
81. 82. Is conjectured by Ferussac to be a young shell of his Helix tridentata; and by Mr. 
Say, in the Journal of the Academy of Natural Sciences of Philadelphia, to be his 
Helix liger a. Petivers Gazophylacium, t. 104. f. 2 . is a copy. 
82. 83. From the figure, unaccompanied by any description, it is nearly impossible to ascer- 
tain the species, and it has only been noticed by Schroeter, and in the Portland 
Catalogue: it is the Helix No. 52. of the former; and in the latter is referred to 
for “ a fair and large terrestrial undescribed Helix.” 
83. 87 . By Gmelin is arranged as a variety of Helix ringens; and in the Portland Catalogue, 
lot 9^*4. 't is called “ a variety of the great brown bidentated Helix of Jamaica.” 
1 he figure is rather indistinctly drawn, and has been quoted, with a mark of doubt, 
by Ferussac, for his Helix Julia. 
84. 84. Is the Helix No. 54. of Schroeters Einleitung; and is quoted by Gmelin for a variety 
of Helix ringens, but it more properly belongs to Helix Cepa. 
85. 85. Quoted by Mulier for his Helix crenulata, and appears to me to be the Helix ca- 
perata of Montagu : Draparnaud however, rejecting this synonym, considers Mul- 
ler’s Helix crenulata to be his Helix elegans, which is the Trochus terrestris of 
British authors. 
86 . 86 . With a mark of doubt, has been quoted by Mulier for his Helix albina, and is rather 
an uncertain figure. 
87 . 88 . Helix punctata of Born ; and in the Descriptive Catalogue, the Helix Isognomosto- 
mus of Gmelin has been improperly blended with this species. 
88 . 89 . Helix Cepa. 
90 . 90- Helix Lychnucus. 
91 . 91 . Is the Helix Thyroidus of Say; and Petiver has copied this figure at 1.105. f. 4. of 
his Gazophylacium. 
92 . 92 . Is the Helix tridentata of Say; and has been quoted by Draparnaud for the Ilelix 
personata of Lamarck, which, though nearly allied, is a distinet species. Petiver, 
t. 104. f. 3. has been copied from this figure. 
93. 93 . Gmelin has quoted this jointly with figure 94 . for a variety of Helix sinuata; and 
from the same figures his Helix Isognomostomus has been badly constituted. The 
latter species in my Descriptive Catalogue has been erroneously referred to for 
Helix punctata ; and the present figure most probably belongs to a shell which 
Mr. Say has described, in vol. ii. of the Journal of the Academy of Natural 
Sciences of Philadelphia, with the name of Helix appressa. It has been copied by 
Petiver in his Gazophylacium, t. 105. f. 6 ; and by Klein in his Meth. Ostracolog. 
t. 1 . f. 22 . 
— 94 . Helix hirsuta of Say ; and from this figure Petivers Gazophylacium, 1.105. f. 6 . has 
been copied. 
94- 9 ^- Helix aspera of Ferussac. In Huddesford’s Index this figure is said to be Helix 
Carocolla ; from which species it differs both in shape, and in the teeth at its 
aperture. 
95. 96 . Helix lactea. 
