INTRODUCTION. Vv 
North-temperate genera, which together made a total of 93. Of these, 74 are confined 
to Mexico and Guatemala, and only 5 reach Panama. ‘The essentially Neotropical 
forms from South America do not drop off in their range northward in a proportion 
at all similar to this; for of 137 South-American genera inhabiting the region 
(excluding those of wider distribution) no fewer than 71 reach Mexico and do not pass 
beyond ; 16 others reach Guatemala only, and only 50 stop short at Nicaragua. 
From this analysis I venture to think that the main conclusions arrived at on a 
similar examination of the Geodephaga are confirmed, viz.:—1l, that the Central- 
American fauna is essentially Neotropical ; 2, that the northern portion of the region 
(Mexico and Guatemala) is not an extension southward of the Neartic Province, but, 
3, that it is a remarkably distinct subprovince of the Neotropical fauna. 
The species here enumerated as inhabiting our region consist of :—Prionide 60, 
Cerambycide 531, Lamiide 682, making a total of 1273 species; of this number 
more than half are described as new, viz. Prionide 22, Cerambycide 245, Lamiide 375, 
making a total of 642 new species. 
The total number of genera is 350; of this number 57 are described as new:— 
Prionide 0, Cerambycide 16, Lamiide 41. 493 species are figured on 25 plates. 27° 
distinct species are noticed as sp. 
%, but not described, owing to want of sufficient 
material. 
Mr. Champion paid a great deal of attention to these insects, both in Guatemala 
and in the State of Panama; he obtained altogether about 600 species. The late 
Mr. Belt met with 300 species in Nicaragua, chiefly in the limited district of Chontales. 
H. W. B. 
January 1886. 
