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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 49. 



to sufficiently differentiate it from that species, as described by its 

 author. Nor does it appear to agree with the other species unplaced 

 in the above key. 



PHRIXOCNEMIS TRUCULENTUS Scudder. 



(?Phnzocnemis inhabilis Rehn.) 



PJirixocnemis truculentus is the type of the genus, as selected by 

 Rehn and Hebard, and is known to the writer only by the male type 

 in the Scudder collection. Tlie allotypic female is not conspccific 

 with the holotype nor even congeneric, as stated farther on under the 



Fig. 22.— PHRIXOCNEMIS TRUCXTLENTUS. HiND LEG OF MALE TYPE. 



treatment of Rliacliocnemis hostiferus Rehn. The armature of the 

 femora of the male and the distinctly curved hind tibiae of that sex 

 will serve to separate truculentus from alUed forms. Tlie posterior 

 leg of the holotype is shown at figure 22. 



Phrixocnemis inhahilis Rehn, known only from the holotype, a 

 female from Missouri in the Hebard collection, is very probably the 

 female of truculentus Scudder. 



PHRIXOCNEMIS VIERECKI Rehn. 



This species was described in the genus Udeopsylla, but the absence 

 of a dorsal spine on the fore femora precludes its admission to that 

 genus. The holotype is a badly mutilated specimen found dead in 

 Otero County, New Mexico. Besides this imperfect specimen the 

 following material referred to this species has been examined: 



One adult male, very similar to the holotype, WiUiams, Arizona, 

 June 13. United States National Museum. 



