16 
ZOOLOGICAL GEOGRAPHY. 
[part nr. 
most important of these are Agra (150 sp.), Ardistonm (44 sp.), 
Schizogenius (25 sp.), Pelecmm (24 sp.), Calophena (22 sp.), As- 
pidoglossa (21 sp.), and Lia, Camptodonotus, Stenocrepis, and 
LacTinophorus, with each more than 12 species. These are all 
tropical ; but there are also a number of genera (26) peculiar to 
Chili and South Temperate America. The most important of 
these are Antarctia (29 sp.), all except two or three confined to 
South Temperate America ; Scelodontis (1.0 sp.), mostly Chilian ; 
Feronomorpha (6 sp.) all Chilian ; and Tropidopterus (4 sp.), all 
Chilian. Helluomorpha (18 sp.), is confined to North and South 
America ; Galerita , Callida, and Tetragonoderus, are large genera 
which are chiefly South American but with a few species scat- 
tered over the other tropical regions. Cctsnonia and Lebia are 
cosmopolite, but most abundant in South America. Fachyteles is 
mostly South American but with a few species in West Africa ; 
while Lobodonotus has one species in South America and two in 
Africa. 
Lucanidse. — The Neotropical species of this family almost all 
belong to peculiar genera. Those common to other regions are 
Syndesus, confined to Tropical South America and Australia, and 
Platycerus which is Palrearctic and Nearctic, with one species in 
Brazil. The most remarkable genus is undoubtedly Chiasogna - 
thus, confined to Chili. These are large insects of metallic green 
colours, and armed with enormous serrated mandibles. The 
allied genera, Pholidotus and Sphenognathus, inhabit Tropical 
South America. Streptocerus confined to Chili, is interesting, as 
being allied to the Australian Lamprima. The other genera 
present no remarkable features ; but Sclerognathus and Leptino- 
ptera are the most extensive. 
Cetoniidse. — These magnificent insects are but poorly repre- 
sented in America ; the species being mostly of sombre colours. 
There are 14 genera, 1 2 of which are peculiar. The most exten- 
sive genus is Gymnetis, which, with its allies Cotinis and Allor- 
hina, form a group which comprehends two-thirds of the Neotro- 
pical species of the family. The only other genera of importance 
are, Inca (7 sp.), remarkable for their large size, and being the 
only American group in which horns are developed on the head ; 
