64 Moll. 
MOLLUSCA. 
Helix africce (A. H. Brown), Pfeiffer, Ohem. ed. nov. p. 527, pi. clxii. 
figs. 8 & 9, South Africa. 
Helix corusca and arachne^ spp. nn., Morelet, J. de Conch, xxv. p. 328 
& 329, pi. xii. figs. 1 & 7. H. russeola (Morelet, 1851), ibid. pi. xiii. fig. 1, 
Anjoana, Comoro Islands. 
Helix hova and sakalava, spp. nn., Madagascar, near sepulchralis (Fer.) 
and suhsepulchralis (Crosse), all four figured, Angas, P. Z. S. 1877, 
pp. 803-805, pi. Ixxx. figs. 1-11 [the second scarcely distinguishable from 
lamarei^ Menke]. 
Helix watersi, ehongensis, and haUtoni, Angas, P. Z. S. 1877, pp. 527 & 
528, pi. liv. figs. 3-5 ; H. funehris and cerina, Morelet, J. de Conch, xxv. 
p. 217 ; H. suarezensisj Crosse & Fischer, J. de Conch, xxv. p. 78 : 
spp. nn., all from Madagascar. 
Helix. Species from Australia and Polynesia 
Helix (Papuina) phceostoma, sp. n.. Martens, MB. Ak. Berl. 1877, p. 276, 
pi. i. figs. 10 & 11, and in Pfeiffer’s Novitat. v. p. 32, pi. cxliv., figs. 13 & 
14, New Hanover Island, near New Ireland. 
Helix (P.) boivini (Petit), radula and genital organs similar to those 
of the group Planispira ; Pfeffer, MB. Ak. Berl. 1877, p. 277, pi. ii. 
figs. 11-13. 
Helix textrix (Pfr.), Pfeiffer, Chemn. ed. nov. p. 528, pi. clxii. figs. 14-17, 
New Hebrides. 
Helix elachy stoma, sp. n.. Martens, MB Ak. Berl. 1877, p. 273, pi. i. 
figs. 8 & 9, and in Pfeiffer’s Novitat. v. p. 35, pi. cxliv. figs. 1-4, Mer- 
maidstreet, W. Australia. H. convicta (Cox), allied to the former, also 
from W. Australia ; id. ibid. pi. i. figs. 6 & 7. 
Helix colona,&^. n., id MB. Ak. Berl. 1877, p. 272, pi. i. figs. 4 & 5, and 
in Pfeiffer’s Novitat. v. p. 36, pi. cxliii. figs. 20-23, Daren Island, a small 
coral island between N.W. Australia and Timor. [Rhagada.'] 
Helix {Rhagada) kooringensis, sp. n., Angas, P. Z. S. 1877, p. 33, with 
woodcut, 30 miles N.E. from the Burra Minos, South Australia. 
Helix (Merope?) barnacki, sp. n., E. Smith, Ann. N. H. (4) xx. p. 242, 
Hawai, Sandwich Islands. 
Helix. American species : — 
Helix {Triodopsis) henriettce^ sp. n., Mazyck, P. Ac. Philad. 1877, p. 297, 
Texas. 
Helix cceca (Guppy), Pfeiffer, Chemn. ed. nov. p. 539, pi. clxiii. 
figs. 26-28, Trinidad. 
Helix {Microphysa') krugiana, sp. n.. Martens, JB. mal. Gos. iv. p. 346, 
pi. xii. fig. 4, Porto Rico. 
Helix {Thelidomus') angulifera, sp. n., id. 1. c.p. 347, pi. xii. tig. 2, Porto 
Rico. 
Helix arangiana, var. n. semiaperta, Martens, in Pfeiffer’s Novitat. v. 
p. 33, pi. cxliv. figs. 15-18, Hayti (probably). 
Helix {Tsomeria) gealei. sp. n., E. Smith, P. Z. S. 1877, p. 361, pi. xxxix. 
fig. 9, South Ecuador. 
Helix poly gy rata (Born). Young specimens have several toothlike 
