DESCRIPTIONS AND DETERMINATIONS OF SPECIES 6l 



macrura (Arizona), and Putorius xantho genes (Point Arena, Calif.). 

 This species was originally described from specimens taken from Mephi- 

 tis mephitica (Nebraska) and Spilogale interrupta (Iowa). It has also 

 been recorded from a South American skunk (Choro, Bolivia), this rec- 

 ord, however, being erroneous ; and also from a Bornean mustelid, Halic- 

 tis everetti, this record, too, probably being erroneous. 



Quite recently Paine has described a species, T. minutus, from a 

 weasel, Putorius noveboracenis, which we are inclined to regard as a 

 synonym of T. mephitidis. We do not have specimens of T. minutus, but 

 we do have numerous specimens from weasels which are undoubtedly T. 

 mephitidis, and also agree very well with the description of T. minutus. 

 There are indeed some differences between the specimens from the differ- 

 ent hosts, but not sufficient to warrant regarding them as representing 

 distinct species. 



Trichodectes crassus Nitzsch. 

 Plate VII, fig. 4. 

 Trichodectes crassus Nitzsch, in Giebel, Ins. Epiz., p. 54, (1874). 



This species has been recorded from the Old World badger, and Os- 

 born has recorded it with some doubt from an American raccoon, Pro- 

 cyon psora. A German record also attributes T. crassus to a raccoon (in 

 some zoological garden) ; but since the raccoons harbor another very dis- 

 tinct species, T. octomaculatus Paine, we are much inclined to doubt these 

 records. Our figure is from specimens which we have received from 

 Europe, and is inserted for the sake of comparison with the other species 

 from Mustelids. 



Trichodectes interrupto-fasciatus n. sp. 

 Plate VII, figs. 1, 2 and 3. 

 Trichodectes mephitidis (in part) Kellogg, Amer. Nat., vol. 48, p. 269, (1914). 



Several males and females from a badger, Taxidea taxus, (South 

 Yolla Bolly Mt., Tehama county, Calif.), and also several males and fe- 

 males from a skunk, (Choro, Bolivia, South America). The latter speci- 

 mens have been previously recorded as T. mephitidis Osborn. 



This species is one of a fairly well defined carnivore-infesting group 

 which includes T. lotus, from the domestic dog, T. vulpis, from European 

 foxes, T. crassus, from the European badger, and T. mephitidis, from 



