On some Mallophaga. 19 



references to Giebel's work are given. In this we follow Kellogg 

 who treats Giebel's descriptions as the original of the species wliile 

 crediting the authorship to Nitzsch. With this decision, which has 

 the tacit consent of most students of the order, we personally are 

 in agreement. It is to be hoped that this amicable understanding 

 will continue. All, who have been attracted to the studj^ of this 

 interesting group of insects must, realising their debt to Nitzsch, 

 unite in doing honour to one who has laid the foundations with 

 so sure a hand. 



In May 1912 and again in August of the same year the 

 writer was, through the courtesy of the British Museum 

 authorities, permiited to inspect the Benny collection in S. Ken- 

 sington, London. Of the notes then made a few bear on some of 

 the species presently recorded. In 1912 however Denny's types 

 were not in a condition to make accurate critical work possible. 

 More recently they have been mounted in baisam and can now be 

 more satisfactorily examined. It seemed advisable therefore to 

 check the notes made last year but this the writer was unable to do 

 personally. His best thanks are due to Mr. Beuge J. Cummings 

 of the British Museum Stafif' for his kindness in answering questions 

 bearing on the Benny Collection and in comparing Br. Bampf's 

 Raven Docophorus with Benny's types. Mr. Cümming's conclusions 

 with regard to D. semisignatus are in harmony with those of the 

 writer. We are inclined therefore all the more strongly to believe 

 that Corvus corax and its many subspecies harbour only one form 

 of Docophorus. But though a few suggestions are oöered in parti- 

 cular instances, no attempt has been made to treat the synonymy of 

 the species now uoticed exhaustedly. Nor has it seemed necessary to 

 multiply bibliographical references, as might easily have been done. 



The following is a list of host birds examined by Br. Bampf 

 with note of the parasites obtained under each species. 



List of Hosts with Parasites. 



An asterisk denotes that the species in question is a "straggler". 



Troglodyles troglodytes horealis Docophorus iro(jlo(lijtis n. sp.? 



Menopon troglodijti D. 

 Sturnus vulgaris faroensis D. leontodon D. 



Menopon sp. 

 Corvus coi-ax varius D. semisignatus N.? et D. 



Nirmus varius N. 



M. gonophaeum G. 



2* 



