66 CONTENTS OF EACH VOLUME. 
with collectors, but the additions do not materially affect the conclusions arrived 
at by Bates. 
19. Cotzoprera. Vol. III. part 1: Serricornia: Buprestide by C. O. Waterhouse ; 
Throscide and Eucnemide by G. H. Horn; Elateride *_Dascillide by 
G. C. Champion. 
For these families of the Serricorn-series, 1353 species are enumerated from Central 
America, 805 of which are described as new. The Buprestide were published 
sn 1882-1889: the Throscide and EKucnemide in 1890; the remaining families in . 
1894-1897 ; and a short Appendix in 1897. The Buprestide, numbering 434 species 
(exclusive of those mentioned in the Appendix), do not appear to be very much in 
evidence, apart from the gigantic Huchroma, in the tropical forests of Mexico and 
Central America, their place being to a great extent taken by the conspicuous Elaterid- 
genera Chalcolepidius and Semiotus. The open parts of Mexico, however, have a rich 
Buprestid-fauna, as shown by the number of species obtained by Hoge in his later 
expeditions to that country ; these were enumerated in the ‘Supplement’ (published 
in 1889). The distribution of Conifers, which do not extend south of Nicaragua, 
probably affects the range of certain genera of this group. ‘The Elateride, numbering 
531 species, have exceedingly few endemic genera, and it may be said in a general 
way that the tropical forms are mostly confined to the forest regions, and that many 
of those inhabiting the open country or higher ground are nearly allied, or actually 
belong, to Nearctic genera. Pyrophorus has one species in North and sixteen in 
Central America, and is essentially Neotropical. The Dascillide, with 130. species 
and twenty genera, is one of the ‘neglected’ families of Coleoptera, and there are no 
available data for comparison with other regions. The Eucnemide, of which a table 
of the genera is given by Horn (pp. 211-213), are represented by 113, the Throscidee 
by forty-four, the Cebrionide by twenty-nine, and the Rhipideceride by fourteen 
species. 
The twenty-seven plates, one of which shows the form of the terminal segment of 
the males of the Buprestid-genus Pachyscelus, illustrate 648 species. 
20. Conzoptera. Vol. III. part 2: by H. S. Gorham: Malacodermata. 
This Volume includes the following nine families :—Lycide, Lampyride, Tele- 
phoride, Lymexylonide, Melyridx, Cleride, Ptinide, Bostrychide, and Cioide. The 
total number of species enumerated is 813; but as very many of our specimens added in 
the ‘Supplement’ were not critically examined by Mr. Gorham, it is probable that the 
actual number represented in the material obtained by our collectors is about 900. 
The author, in his ‘Introduction’ (published in 1886), states that it is now seen that 
* First undertaken by E. W. Janson, 
