VERNON L. KKLLOGG. 315 



A Second Collection oT ^lalloplia^a from Birdw of the 



Galapagotii and Revillagigedo Islands 



and Neighboring Waters. 



BY VP:RN0N L. KELLOGG, STANDFOKD UNIVERSITY, CAL. 



In 1902 Mr. Kuwaiia and I published (Proc. Wash. Acad. Sci., 

 vol. iv, pp. 457-499, plates XXVIIl-XXXI, September, 1902) an 

 account of a collection of Malloi)liaga biting (bird-lice) made by 

 Mr. R. E. Snodgrass of the Hopkins-Stanford C4alapagos Expedi- 

 tion of 1898-99. This was the first collection of Mallophaga ever 

 made from these islands, and included specimens from 183 birds 

 representing 34 out of the 79 bird species known on the islands. Of 

 the 5 bird genera and 48 species peculiar to the islands, Mallopliaga 

 were taken by Mr. Snodgrass from all the genera and from 26 of 

 the species. The whole number of species of Mallophaga in the col- 

 lection is 43, of which 25 were new to science and were described in 

 the paper referred to. 



The present collection is one made by Mr. Rollo Beck in the 

 summer of 1901, and the third determinations are those of the 

 collector. While the collection contains but three new species, 

 including one new genus (a fact saying much for the thoroughness 

 of Mr. Stiodgrass's collecting in 1898-99), it nevertheless extends 

 the host record for several previously known species, and for that 

 reason alone the list should be put on i-ecord. As I am at present 

 engaged in preparing the account of the Mallophaga for Wytsman's 

 Genera Insectorum, I wish to include Mr. Beck's records in this 

 account, and hence, with the assistance of two students, A. W. 

 Wellmann and A. M. Brown, familiar with the Mallophaga, I have 

 rather hurriedly, but I think safely, determined and listed the spe- 

 cies included in Mr. Beck's collection. 



The original descriptions and host records for all species hitherto 

 accredited to the Galapagos Islands are to be found in the paper in 

 the Proceedings of the Washington Academy of Sciences already 

 referred to. All of ^Nlr. Beck's host records are given in the pres- 

 ent list, and wherever the host record is new the fact is mentioned. 

 Exactly the same remarkable phenomena of host distribution are to 

 be noted in the records of Mr. Beck's collection as wei'e apparent in 

 Mr. Snodgrass's records. And this indicates — what, indeed, was 



TEANS. AM. ENT. SOC. S.XXII. NOVEMBER. 190(j. 



