The Cambridge natural history, Vol. 03 (of 10)Cooke, A. H. (Alfred Hands)
Science
The Cambridge natural history, Vol. 03 (of 10)
Cooke, A. H. (Alfred Hands)
Animals
The Ternate group shows decidedly closer relations with New Guinea than
the Amboyna group. Thus, among the _Helices_, the markedly Papuan genus
_Papuina_ is represented by 7 species in the Ternate group, but by 1 in
the Amboyna group. Again, the _Cristigibba_ section of _Planispira_,
which is a Papuan form, has 4 representatives in the northern group,
but only 1 in the southern. Certain points of connexion with Celebes
come out in the southern group which are wanting in the northern; thus
of _Chloritis_ there are 8 species in Amboyna, 0 in Ternate, 3 in
Celebes.
In the Moluccas the Helicidae, for the first time as we move eastward
from India, gain the ascendancy over the Naninidae, the numbers being,
_Helix_ 55, _Nanina_ 36. If we take the groups separately, we find that
in the Amboyna group the proportion is 22 to 23, while in the Ternate
group it is 33 to 13, an additional proof that the Amboyna group is far
less Papuan than the Ternate. Of _Planispira_, the most characteristic
sub-genus of _Helix_, there are 12 species in the Ternate group, and 5
in the Amboyna. The section _Phania_, which contains 4 species of the
finest _Helices_ known, is quite peculiar to the Ternate group. One
species of _Obbina_, a sub-genus markedly Philippine, occurs in each
group. Several of the Indo-Malay land operculates (_e.g._ _Ditropis_)
reach their limit here, and here too we have the last _Clausilia_
(strangely absent from the Amboyna group). _Amphidromus_ is not
reported on sufficient authority to warrant its insertion in the list.
_Land Mollusca of the Moluccas._ (T = Ternate, A = Amboyna[370] group)
Helicarion 1 A
Euplecta 1 A
Xesta 6 A, 4 T
Macrochlamys 1 A
Lamprocystis 4 A, 2 T
Macrocycloides 4 A
Sitala 1 A
Kaliella 3 A, 1 T
Trochomorpha 3 A, 3 T
Endodonta 1 A
Patula 1 A
Plectotropis 1 T
Eulota 1 A
Chloritis 8 A
Planispira 5 A, 12 T
Cristigibba 1 A, 4 T
Obbina 1 A, 1 T
Phania 4 T
Albersia 3 T
Camaena 1 T
Papuina 1 A, 7 T
Pupa 3 A
Vertigo 2 A
Clausilia 1 T
Opeas 4 A, 4 T
Subulina 1 A
Tornatellina 1 A
Vaginula 1 A
Melania 18 A, 4 T
Faunus 1 A
Vivipara 1 A
Acmella 1 A
Diplommatina 4 A, 2 T
Registoma 1 T
Pupinella 1 A
Callia 2 A
Leptopoma 4 A, 5 T
Lagochilus 1 A, 1 T
Ditropis 3 A
Cyclotus 4 A, 6 T
Omphalotropis 3 A
Georissa 1 T
Helicina 6 A, 3 T
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