56. Coleoptera-Carabidae of the Juan Fernandez Islands. 
By 
H. E. ANDREWES. 
In the following pages some account is given of the Carabidae collected 
by the Swedish Pacific Expedition of 1916—-17, which I have been enabled to 
study through the courtesy of Prof. Dr. YNGVE SJOSTEDT of the Stockholm 
Museum. The Expedition was under the direction of Dr. CARL SKOTTSBERG, 
with Mr. KARE BACKSTROM as Entomologist; it appears from the labels that 
Mr. BACKSTROM himself captured all the specimens now under review. Col- 
lections were formed both on Masatierra, the principal island, on Santa Clara, 
and on Masafuera, a smaller island, about a hundred miles further west. The 
geodephagous fauna of these islands, hitherto very imperfectly known, is 
evidently related to that of Chile, some 360 miles distant; nevertheless, only 
5 of the 13 described species and varieties of Carabidae are common to the 
two regions. 
The first explorer to bring back any Carabidae from Juan Fernandez 
seems to have been GERMAIN, who visited both islands; in a paper subse- 
quently published in the »Anales de la Universidad de Chile, 1855» he described 
two new species, and the description of a third, the only one up to that time 
known from Masafuera, appeared in 1873 in PUTZEYS »Essai sur les Antarcta 
(Dejean)». In 1872 Masatierra was carefully explored by E. C. REED, who, in 
the »Proceedings of the Zoological Society of London, 1874», published a 
paper on the »Coleoptera Geodephaga of Chile», in which six species of 
Carabidae from these islands were identified and a new one described. In 
1882 Masatierra was again visited, on this occasion by Commander J. J. WALKER, 
who collected a few Carabidae which are now in the Collection of the British 
Museum; among them are examples of a new species not found by Mr. BACK- 
STROM, which, in order to make my account as complete as possible, I have 
described here, along with the four new species and one variety found 
by him. 
I am unfortunately unacquainted with the type specimens of the Carabidae 
of South America and the adjacent islands, so that the identifications are based 
on the descriptions of the various species and on a few comparisons with 
specimens determined by others. The types of all the new species, except 
that of Pterostichus Walkeri, are in the Stockholm Museum; the figures were 
drawn by Miss B. Hopkins. An enumeration follows, accompanied by a few 
notes, and at the end will be found descriptions of the new species. 
