59 Anoplura (Siphunculata & Mallophaga) from Juan 



Fernandez Hosts. 



By 

 GORDON B. THOMPSON (London). 



This brief report is based on material collected by Mr. (now Dr.) K. 

 BaCKSTROM during Professor C. Skottsberg's Expedition to Juan Fernandez 

 in 1916 — 1917. In 1919, the collection was handed over to a specialist who, 

 however, never found time to attend to it. The material had been allowed to 

 become dry and many of the corks had become dislodged from the tubes in 

 the course of years. Recently the whole collection was entrusted to me for 

 study through the kindness of Professor O. LUNDBLAD by Dr. RenIl Malaise 

 on the understanding that I would do the best I could with it. As a result of 

 the collection having been left unattended to for many years and the fact that 

 I noticed several obvious errors in host data — for which Dr. Backstrom is 

 not responsible — in the course of mounting it I have not felt justified in 

 spending as much time on it as I would have gladly done had the collection 

 been in better shape. Two species from the mainland of Chile have been 

 included. In the following notes I have only given a skeleton bibliography of 

 the species. 



SipJiunculata. 

 Haematopinidae. 



I. Polyplax spinulosa (Burmeister). 



Pediculus spinulosus Burmeister, 1839, Rhynchota, Genera Insectorum, No. 8. 

 Polyplax spinulosa (Burmeister), Ferris, 1923, Contrib. towards a Men. Sucking Lic^, 

 IV, p. 187, f. 119, 120 A, 1), F, H. 



Several males and females from Rcxttus rottns (L.), Masatierra, 23. IV. 

 1917. 



42 — 38264. The Nat. Hist, of Juan Fernandez and Easter Isl. Vol. I J I. 



