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 »Atiales 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 Antarctia 

 (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 n)ake 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. 



