28 Moll. 
MOLLUSCA. 
Uherewe and Tanganyika Lakes. Melania tuber culata (Miill.), Vivipara 
aby88inica (Martens), Mutela subdiaphana (Bourg., not yet described), 
and 7 new species of Unio from the former, 5 species of Unio already 
described by English authors, and the 2 peculiar genera, Cameronia , 
1 sp„ and Burtonia) 2 spp., from the latter, mentioned by Bourguignat, 
Moll. fluv. du Nyanza Oukerewe, &c., 23 pp., with 1 pi. 5 terrestrial and 
5 fresh-water species collected in Tanganyika by It. Rohm, noted by 
E. v. Martens, none new, 1 known also in the Nile ; SB. nat. Fr. 1883, 
pp. 71 & 72. 
Socotra. The shells collected by Riebeck & G. Schweinfurth in 1881 
reviewed in comparison with those by Balfour in 1880 ; 10 species of oper- 
culated and 22 of inoperculated land shells are now kuown from that island ; 
the subgenera Passamaiella, Achatinelloides } and RiebecJcia appear to be 
peculiar to it. The whole facies of the fauna agrees with that of continental 
Eastern Africa and of Arabia, which is itself rather African than Asiatic ; 
only the 2 species of fresh-water shells found by Riebeck & Schweinfurth 
are of Indian character. E. v. Martens, Oonchol. Mitth. ii. pp. 140-151, 
pis. xxviii. & xxix. The same also enumerated by 0. Taschenberg, 
Z. ges. Naturw. (4) ii. pp. 169-171. 3 species of Planorbis i 1 of Hydrobia ?, 
and 4 of Melania , collected by Balfour, described by H. H. Godwin- 
Austen, P. Z. S. 1883, pp. 2-8, pis. i. & ii. ; the genus Limncea is want- 
ing in this island ; the fresh-water shells have more of an Indian than 
African character. 
Mayotte , Comoro Islands. 70 terrestrial, 11 fresh-water, and 19 sub- 
marine species enumerated ; most of them are peculiar species, and of 
minute size ; the fauna has more resemblance to that of continental 
Africa and Madagascar than of Mauritius and Bourbon ; 10 submarine 
species are common with Polynesia. Morelet, J. de Conch, xxxi. 
pp. 189-216, pi. viii. 
i 
8. Asia. 
Chukchi Peninsula. 6 species of land shells and 1 fresh-water shell 
( Physa ) collected by the brothers A. & A. Krause, discussed by the same, 
SB. nat. Fr. 1883, pp. 31-34. 
Japan. The species of Hyalina and Conulus reviewed, with several 
new ones, and a new Fruticicola ; Reinhardt, SB. nat. Fr. 1883, pp. 
83-86. 
China. The literature to Nov., 1882, of the Chinese land snails enume- 
rated, and those collected by L. v. Loczy in the provinces Shensi and 
Kansu, some subfossil or fossil, described by V. Hilber, SB. Ak. Wien, 
lxxxvi. Abth. 1 [1882], pp. 313-352, 3 pis. A continuation of the same 
subject, including some species from Eastern Tibet, and some very 
remarkable forms of Buliminus ; id. op. cit. lxxxviii. Abth. 1, pp. 
1349-1392, pis. iv.-vi. M. Neumayr gives some notes on the fresh- 
water shells collected by the same traveller in Middle and Southern 
China, stating that there is much resemblance between the recent 
fresh-water shells of China and the Tertiary ones of Europe, bu t that 
Melanopsis and Dreissena are wanting in China, and pointing out a fresh- 
