186 
MOLLUSCA. 
Helix, Species from Australia : — 
Helix dictyodes (Pfr.). Jaw smooth, radula agreeing with that of 
typical Helix, a distinct arrow-bag ; P. Fischer, J. de Conch, xxiii. 
pp. 272-275, pi. xiv. figs. 3-6. 
Helix astur (Souverbie). Jaw smooth, with median projection, radula 
as usual in Helix ; Binney, P. Ac. Philad. 1875, p. 248, pi. xx. figs. 11 
& 12 . '' 
Helix vimontiana (Crosse, 1874), J. de Conch, xxiii. p. 217, pi. ix. fig. 2, 
New Caledonia [perhaps a young shell]. 
Helix convicta (Cox). Jaw [oxygnath] and radula ; Binney, 1. c. p. 251, 
pi. xxi. fig. 7. 
Helix {Merope) fringilla (Pfr.). Jaw and radula, the latter somewhat 
approaching that of Orthalicus ; id. Ann. Lyc. N. York, xi. p. 175, pi. xiv. 
fig. A, and pi. XV. fig. a. 
Helix {Hadrd) mourilyani, joTinstonii, hilli, coxencB, and mossmanni, 
Queensland, and hellenden-herensis, N.E. Australia, spp. nn., J. Brazier, 
P. Z. S. 1875, pp. 31-33, pi. iv. figs. 1-6. 
Helix forrestiana, N.W. Australia, and broughami, Port Lincoln, 
S. Australia, spp. nn., Gr. F. Angas, P. Z. S. 1875, pp. '389 & 390, pi. xiv. 
figs. 3 & 4. 
Helix (Xanthomelon) daintreei, sp. n.. Brazier^ 1. c. p. 33, pi. iv. fig. 8, 
Queensland. 
Helix. North American Species : — 
Helix limitaris, sp. n., Gr. M. Dawson, Eep. Brit. N. Amer. Boundary 
Comm. 1875, p. 347, Waterton Lake, Rocky Mountains. 
Helix {Microphy so) ingersolli, sp. n.. Bland, Ann. Lyc. N. York, xi. 
p. 151, with woodcut, S.W. corner of Colorado ; jaw ribbed, teeth as 
usual in Helix. Jaw and radula described ; id. 1. c. p. 171, pi. xii. 
fig. E, and pi. xviii. fig. 0. 
Helix (Stenotrema) spinosa (Lea), stenotrema (Fdr.), and harbigera 
(Redf.). Grenital system ; Binney, Ann. Lyc. N. York, xi. p. 174, pi, xi. 
fig. 3. . 
Helix {Triodopsis) van-nostrandi, sp. n.. Bland, Ann. Lyc. N. York, 
xi. p. 200, South Carolina. H. (T.) tridentata (Say), fallax (Say), 
hopetonensis (Shuttl.), rugeli (Shuttl.), van-nostrandi (Bland), and 
harfordiana (Coop.), genital system of all, radula and jaw of the two 
last; Binney, tom. cit. pp. 174 & 175, pi. xvii. figs. 8, 11, 12, 14, 18 & 
19, and pi. xviii. fig. a. 
Helix {Polygyra) leperina (Grould), auriculata (Say), uvulifera (Shuttl.), 
eeptemvolva (Say),/(e6^^m (Bland), cereolus (Mhlfld.), and carp enter iana 
(Bland), genital system of all, radula of the second and the two last ; 
Binney, Ann. Lyc. N. York, xi. pp. 176 & 177, pi. xii. fig. 6, pi. xiii. fig. k, 
pi. xvi. fig. c, pi. xviii. fig. b & e. 
Helix {Mesodon) exoleta (Binn.). Radula; id. 1. c. p. 178, pi. xvi. 
figs. D & E. 
Helix {Arionta) ruficincta (Newc.), carpenteri (Newc.), ayresiana 
(Newc.), exarata (Pfr.), diabloensis Coop.), arrosa (Gould), and facta 
Newc.), genital system of all, radula of the second, fifth and last ; id. 
