118 



Zoologica: N. Y. Zoological Society. 



[I; 4 



As a matter of fact this lead starts admirably. For one of 

 the three species taken from the Hoatzin by Mr. Beebe belongs 

 to a characteristically pheasant-infesting genus. This parasite 

 is Goniocotes curtis which Nitzsch (the first student of the Mal- 

 lophaga) took from a Hoatzin over fifty years ago, and which 

 has not been recorded from any other host since. Of the fifty- 

 six species of Goniocotes known, practically all are recorded only 

 from the Pheasants and Pheasant-like birds. 



But the other two species of Mallophaga from the Hoatzin 

 that are represented in Mr. Beebe's collection are unfortunately 

 new species and species belonging to groups without any such 

 penchant for a particular host group. One of these, however, a 

 Lipeurus, belongs to the group clypeati sutura distincta which is 

 composed of species so far practically limited to such strictly 



Fig. 38. Colpocephahim armiferum, new species. 



maritime birds as Albatrosses, Cormorants, Boobies and Peli- 

 cans, The other new species is a Colpocephalum with two of its 

 nearest forms (spinulosum and spineufn) also from maritime or 

 shore birds. C. spinosum, a third related form, is, however, a 

 Francohn (African Partridge) infesting species. 



