INDEX TO THE HISTORIA CONCHYLIORUM. 
9 
Tab. Fig. 
49. 47. Helix grisea. 
50 . 48 . Quoted by Mulier, Gmelin, and Lamarck for Helix volvulus; but the spire is too 
much produced, and it is probably some other species of the genus Cyclostomus. 
51 . 49. Is probably a variety of Helix lactea, and I have received specimens which are equally 
large from Spain. Tab. 153 . f. 8. of Petiver’s Gazophylacium has been copied from 
this figure. 
52 . 50 . This, as well as the preceding figure, has been strangely cited by Gmelin for a variety 
of Helix Pomatia, and it bears a far greater resemblance to Helix Algira. I have 
seen the species in Mrs. Mawe’s cabinet, and bebeve it is undescribed, unless it 
should prove to be the Linnean Helix striatula. 
53 . — An anatomical dissection of Helix Lucorum, copied from a work published in 1679, 
by J. J. Harderus, and entitled “ Examen Anatomicum Cochleae terrestris domi- 
“ portae.” 
54 . 50 . Helix citri na. 
55 . 51 . Is Turbo Jamaicensis of Chemnitz, which in my Descriptive Catalogue has been ar- 
ranged as a variety of Helix Oculus Capri, but is perfectly distinet. Gmelin has 
strangely quoted this figure both for Helix corrugata and for a variety of Helix 
nemoralis. Petiver, in his Pterigraphia, t. 14 . f. 11. and Klein, in the Meth. Ostra- 
colog. t. 1. f. 28 . have copied this figure. 
5 6. 53 . Helix arbustorum. 
57. 54 . Helix nemoralis. 
58 . 55 . Quoted by Mulier, with a mark of doubt, for Helix strigata, and absurdly by Gmelin 
for a variety of Helix nemoralis. 
59. 56 . Helix Pisana: and Ferussac’s opinion, that the Helix cingenda of Montagu is the 
Helix Pisana of Mulier, appears to me to be erroneous. 
60. 57. Has been quoted by most authors for Helix citrina, but in the greater convexity of 
the base it more resembles Helix nemorensis. 
61. 58 . Trochus terrestris; and t. 22. f. 10. of Petiver’s Gazophylacium is a copy. 
— 59. Helicina Neritella of Lamarck, and I believe that the species has not been described 
by any other author; it has however been figured by Bowdich, in his Elements of 
Conchology, 1.12. f. 6. 
62. 60. Helix Epistylium. Petiver has copied this figure in his Pterigraphia, 1. 14 . f. 12. 
63 . 6l. Helix Carocolla. 
64 . 62. Helix albella. 
65 . 63 . Helix exilis. 
66. 64 . Is a young shell of Helix Pellis Serpentis, with the outer lip unformed, and the dots 
round the umbilicus wanting. 
67. 65. Is the Helix No. 34 of Schroeters Einleitung, and the figure has not been noticed 
by any other author. 
— 66. Helix marginata, with the umbilicus closed, which is always the case in old shells. 
68. 67. Is quoted both by Meuschen and in the Portland Catalogue jointly with f. 66. and 
was also thought by Lister to be the same species: it differs however in the toothed 
appearance of the pillar lip, and I have never seen any shell like it. 
69. 68. Helix lapicida. 
70. 69. Is the Helix alternata of Say, and it has been quoted by Mulier for his Helix ra¬ 
diata, which is probably the same species. Petiver, in the Gazophylacium, 1 . 104 . 
f. 1. has copied this figure. 
71. — The two upper figures are Helix nitida, and the others belong to Helix rufescens. 
72. 70. Is the Helix No.39. of Schroeters Einleitung, and considered by Draparnaud to be 
a variety of Helix albella. 
73. 71. Is the Helix No. 40 . of Schroeter, and is an uncertain figure: it has been copied by 
Klein in his Methodus Ostracolog. 1.1. f. 16. 
— 72. A variety of Helix zonaria. 
74. 73. Quoted by Ferussac, with a mark of doubt, for his Helix Isabella; and Lamarck has 
very unnecessarily changed the name of this species to Helix Barbadensis. 
_ 74. Mulier has quoted this figure for his Helix muralis; but Ferussac suspects that it is 
anotber species, to which he has given the name of Helix formosa. It has been 
copied by Klein in his Meth. Ostracolog. t. 1. f. 18 . 
75. 75. Has been quoted by Mulier and Gmelin for Helix involvulus; and this species is so 
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