490 Bibliographical Notice. 
17. A. Kingsleye. 
Gunth. Ann. & Mag. N. H. (6) xvii. 1896, p. 279, pl. xv. fig. B. 
Ogowé. 
18. A. macrolepidotus. 
Brycinus macrolepidotus, Cuv. & Val. Hist. Poiss. xx. p. 157, 
pl. cececexxxix. (1849). 
Alestes macrolepidotus, Bilharz, Sitzb. Ak. Wien, ix. 1852, p. 469, 
pl. xxxvii.; Kner, Denkschr, Ak. Wien, xviii. 1860, p. 19; Giinth. 
Cat. Fish. v. p. 313 (1864); Steind. Sitzb. Ak. Wien, lxi. i. 1870, 
p. 540, pl. i., and Notes Leyd. Mus. xvi. 1894, p. 68 ; Bouleng. Poiss. 
Congo, p. 158 (1901). 
Nile, West Africa from Senegal to Ozowé, L. Tanganyika. 
19. A. yrandisquamis. 
Bouleng. Ann, Mus. Congo, Zool. 1. p. 85, pl. xxxv. fig. 3 (1899), and 
ih, Os [Oo WES), 
Congo. 
BIBLIOGRAPHICAL NOTICE. 
Biologia Centrali-Americana. 
Land and Freshwater Mollusca. By Prof. Epvarp von Martens. 
Tus work, commenced so long ago as 1890, has at length been 
completed. It consists of 706 pages of text and 44 plates, 28 being 
coloured and 16 uncoloured. ‘The introductory portion, pp. 1-xxvill, 
gives some account of the different collectors and travellers who 
have obtained specimens in the various countries under considera- 
tion. It includes also some interesting notes on the geographical 
distribution of the genera of Mollusca found in those regions and 
observations on the intermingling of North- and South-American 
forms within their limits. The main portion of the work consists 
of lists of the known forms of the various genera treated of, full 
synonymy and references, with descriptions of many new forms and 
varieties. 
A distinct feature of this work consists of comparative tables of 
species, at the commencement of each genus, giving a summary of 
their conchological differences, these tables being employed instead 
of a separate diagnostical description of each form, They will 
doubtless prove of great assistance to the student in naming his 
collection, the differentiating features of all the various forms being 
seen at a glance. 
Great care and labour have evidently been expended in the 
production of this volume, which necessarily for many years will be 
the standard work of reference on the subject treated of. The 
author is to be congratulated on the completion of this the latest of 
his many valuable contributions to conchological science; and the 
