2 Moll 
VII. MOLLUSCA. 
work, though the wisdom of proposing many new genera in a ‘ Text-book’ 
of this nature may be questioned. It may be mentioned that some portions 
dealing with the Mollusca appear to have been distributed in past years, 
that relating to the Cephalopoda , however, in which all but one of the new 
genera lie, is dated 1900. A further instalment of Bronn’s (57) important 
work, now written by Simroth, has been published. Pilsbry in Tryon’s 
Manual (551) has continued his careful study of the Bulimulidce; it is to 
be regretted that the projected third series of this work, to deal with the 
Pelecypoda, appears to have been abandoned. Steady progress has been 
made with the Conchylien-Cabinet (296), nine parts having been issued, 
dealing with both land and marine Gastropoda. Considerable attention 
has been given to the study of the hinge in the Pelecypoda. , with a view to 
their classification ; notably by Noetling (356, 357) and Vest (569, 570). 
Hedley (205) has published a very interesting zoo-geographic scheme 
for the Mid-Pacific Islands. 
Turning to works of a faunistic nature and, firstly, dealing with non¬ 
marine molluscs, we have, as before, to chronicle progress by Martens 
(288) in his study of the Central-American fauna, and by Moellexdorff 
(319) in his supplement to Semper’s well-known ‘Reisen.’ The brothers 
Sarasin (456) have issued a work on the land fauna of Celebes, valuable 
from a malacological as well as a conchological standpoint. Godwin- 
Austen (171) has continued his study of the fauna of the Indian region ; 
while Sturany (521) has written a valuable account of the South African 
land and freshwater shells. Locard (269) has described the fauna of 
Portugal, though we venture to think that some of his supposed new 
species may prove to be only varieties of forms already known. To 
Vendryes (568) we owe a useful catalogue of the Jamaican non-marine 
molluscs: Taylor (542) has published a further part of his study of the 
land and freshwater shells of the British Islands, still containing only 
introductory matter. Simroth (472-476) and Collinge (80-84) have 
written several papers on slugs. 
Amongst the papers specially devoted to the description of new forms 
we may note those of Pilsbry (391, &c.) and Moellendorff (326) relating, 
respectively, to America and West China; as also that of Fulton (168) 
on some islands of the Malay Archipelago, and those of Bavay and 
Dautzenberg (21) on Tonkin. Smith (489) has described some further 
forms from British Central Africa. The Mollusca of Lake Tanganyika 
have again attracted attention; Moore (335, 335a) has published further 
contributions to our anatomical knowledge and Martel and Dautzenberg 
(286) have described some new forms, while Nicolas (354) has written on 
the origin of the fauna. 
In dealing with marine shells the first place may be given to Hedley’s 
(200-202) detailed account of the molluscs of Funafuti, Ellice Islands, 
which forms a valuable addition to our knowledge of the Polynesian fauna. 
Hervier (211, 212) has given further study to the fauna of New Caledonia; 
we regret that this interesting series of papers may now cease. A few 
nudibranchs from Samoa have been enumerated by Eliot (145), and a 
good series of molluscs from the Torres Straits has been catalogued by 
Melvill and Standen (310). The Australasian fauna has formed the sub¬ 
ject of papers by Tate (535-539), Pritchard and Gatliff (424, 425), Suter 
(524-529), and others ; while Smith (487) has described a few deep-sea forms 
from the Indian Ocean. Amongst a number of papers dealing with the 
American fauna may be noted those of Bush (67) on some Turhonillidce 
and Stempell (514) on Chilian Pelecypoda. Appellof (10), Lonnberg 
(275), and Joubin (231) have dealt with collections of Cephalopoda 
from Ternate, Tierra del Fuego, and the Atlantic Ocean respectively. 
Of the anatomical papers on Cephalopoda we may note, in addition to 
those last named, that of Ivopsch (255) on the optical ganglion. The causes 
