460 KELLOGG AND KUWANA 



are confined to hosts which are peculiar to the islands ; but as so 

 much opportunity for miscellaneous migration is offered, these 

 forms cannot be advantageously compared with other species 

 whose individuals may have actually recorded a wider host 

 range but are also normally peculiar to strictly Galapagos hosts. 

 A second collection of Mallophaga from Galapagos Islands 

 birds is now being made by Mr. Beck and with this additional 

 material, and with collections from the west coast of South and 

 Central America in hand it may be that some generalizations of 

 importance may be arrived at. 



The names of the birds used in this paper are those adopted 

 by Ridgway ^ because these names were used by Snodgrass and 

 Heller in determining the birds. 



The papers by Kellogg on North American Mallophaga 

 which are constantly referred to by abbreviated titles in the fol- 

 lowing pages are the following : 



New Mallophaga, I ; Contributions to Biology from the Hopkins 

 Seaside Laboratory of the Leland Stanford Junior University, 

 No. IV, 1896. 

 New Mallophaga, II ; Contribvitions to Biology from the Hopkins 

 Seaside Laboratory of the Leland Stanford Junior University, 

 No. VII, 1896. 

 New Mallophaga, III ; Contributions to Biology from the Hopkins 

 Seaside Laboratory of the Leland Stanford Junior University, 

 No. XIX, 1899. 

 A List of the Biting Lice (Mallophaga) taken from Birds and 

 Mammals of North America, Proc. U. S. Nat. Mus., Vol. XXII, 

 pp. 39-100, 1899. 

 The authors have to express their obligations to Professor 

 Walter Miller, of Stanford University, for assistance in compos- 

 ing the specific names, and to Miss Mary Wellman, artist. 



SYSTEMATIC ACCOUNT. 



Genus Docophorus. 



DOCOPHORUS VALIDUS MINOR var. nov. 



Kellogg and Chapman, New Mallophaga, iii, p. 56, pi. v, fig. 2, 1899. — 

 Kellogg, List of Mallophaga, p. 44, 1899. 



Four specimens, male and female, from Puffinus subalaris from 



iProc. U. S. Nat. Musevim, Vol. xix, pp. 459-670, 1896. 



