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OXYGNATHA. 155
the right side is wanting, the left cervical lobe divided into two; two ceeca
and an acinous gland in the penis; the rest of the genital apparatus as in
Rotula, pi. 3. fig. 5; dentition pi. 6. fig. 15. Semper, I. c. p. 42. [= Trochonanina,
Mousson (Zool Rec. vi. p. 563), which has priority.]
Nanina plicatula, cherraensis, rubellocincta, austeni, falcata, and koondaensis,
spp. nn., Blanford, J. A. S. B. xxxix. pp. 13-16, pi 3. figs. 7-12, British
India.—Helix ochthoplax, Bens., from the Khasi hills and Northern Cachar,
probably not from Pegu, Blanford, ibid. p. 28.
Rotula *, Albers, elevated to a separate genus by C. Semper. Horn-like
prominence above the mucus-pore short or wanting; shell-lobes mostly
absent. No appendicular gland in the female; a sac with calcareous concretions
on the vas deferens, and a caecum on the retractor penis. To this genus
belong:—ccelatura, Fer., rufa, Less., massoni, Behn, and campbelli, Gray, all
described hitherto as Helix. The sexual apparatus, jaw, and dentition of
these four species described and figured, pi. 3. figs. 22, 23, 25, & 28, pi 7.
figs. 1, 2, 3 & 17. Probably also Helix rawsonis, Bens., detecta, Fe"r., cernica,
H. Adams, and imperfecta, Desh., belong to this genus, but they are known
only from the shell. H philyrina, Morelet, must be reexamined; its radula
figured pi 6. fig. 35. All the above species are from Mauritius or Bourbon
except R. massoni, which lives on the Nicobar Islands. Semper, I. c.
pp. 38-41.
Nanina implicata, sp. n., Bourbon, forming with argentea (Reeve), linophora,
Morelet, and semicerina, Morelet, which last = rawsonis, Bens., a
small group of closely allied Mascarene species. Nevill, J. A. S. B. xxxix.
pp. 406, 407.
Nanina prcetumida, Fe"r., the living animal described; and N. cordemoyi,
sp. n., closely allied to the former, but from Bourbon. Nevill, I. c. p. 408.
Helix ccelatura, Fe"r., is probably a true Helix, not a Nanina. Nevill, I. c.
p. 413.
Nanina (Trochomorpha) apicata, sp. n., Blanford, I. c. p. 16, pi 3. fig. 13,
Nilgherries, in their highest parts.
[Trochomorpha] Helix (Videna) kingi, sp. n., Brazier, P.Z. S. 1870, p. 662,
Tasmania.
Trochomorpha accurata, sp. n., Mousson, J. de Conch, xviii. p. 120, pi. 7.
fig. 2 ; T. transarata, Mouss., figured, ibid. pi. 7. fig. 1. Some new varieties of
this and allied species described by the same, ibid. pp. 121, 123. Helix
abrochroa, Crosse, 1868, belongs also to this group; it is figured by Crosse,
ibid, pi 1. fig. 2. All from the Fiji Islands.
Nanina (Sesara P) ataranensis, sp. n., Theobald, J. A. S. B. xxxix. p. 401,
pi 18. fig. 7, Ataran river, Martaban.
Zonites, Montf. The anatomical characters given from examination of
Z. verticillus, F6r.; the sexual apparatus figured pi. 5. fig. 1, and stated to
be very near to those of Rhysota. Several American species also agree in
their anatomical character with Zonites, and may enter into the same genus;
for example, Helix lucubrata (Say), genital apparatus figured pi. 3. fig. 27,
jaw and radula pi. 5. fig. 21; probably also H. euryomphala, Morelet, fuliginosa,
Griffith, inornata, Say, caduca, Pfr., and bilineata, Pfr. But in America
there are also Zonitidse with horn-like prominence above the mucus-pore,
This name is preoccupied for a genus of Echinidce.—THE RECORDER.
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