14 



PROCEEDINGS OF THE NATIONAL MUSEUM 



curved first inward then outward at their tips; parameres but 

 slightly developed and united. 



Legs short and somewhat stout, the first pair being but slightly 

 shorter than the second, and the second but slightly shorter than 

 the third; first segment of tarsi poorly developed; claws moderate. 



Length of male, l.YO mm. ; width, 0,80 mm. 



Length of female, 1.90 mm. ; width, 1.15 mm. 



Type host. — Progne.subis svMs. 



Type {cotype). —C^t. No. 42763, U.S.N.M. 



i\ e f 



Figure 7. — The prosttiirnal plates of ; «, D. (Deinntus) richmondi, new species ; 

 &j D. (DENNrus) ADSTRALiSj NEW SPECIES ; o, D. (Dbnnyus) dubius (Kellogg) ; 

 d, D. (Ctenodennyus) spiniger, new species ; e, Edreum cimicoides (Nitzsch) ; 

 t, Hirdndoectjs AMERICANOS, NEW SPECIES. (All enlarged 80 times, and drawn 

 by Miss Heurich and Dr. E. A. Chapin) 



Described form a male and a female taken from purple martin, 

 Progne subis suhis, Keserve, New Mexico, May 25, 1927, H. H. Kim- 

 ball. A'' very distinct species, 



THE SYSTEMATIC FOSITION OF THE GENERA DENNYUS AND EUREUM 



In view of the fact that the closely related genera Dennyus and 

 Eureutn are well defined and show an abundance of evidence of con- 

 stituting a natural group confined to swifts, interest attaches to their 

 zoological or systematic position in the suborder Ainhlycera, a sub- 

 order which is the more primitive of the two making up the order 

 Mallophaga. 



