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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 50. 



union of the two parts. The right spicule is 85 fx long and slightly 

 curved. 



Female 25 to 30 mm. long and 750 fx thick, body usually twisted in 

 an extended cork-screwlike spiral of two or three turns. The head is 

 about 135 to 175 /x in diameter. The esophagus is about 980 fi long. 

 The posterior extremity is nearly straight, conical, obtusely rounded, 



/iomm. 



yiomm-. 



Fig. 245.— Filaria scapiceps. Pos- 

 terior EXTREMITY OF FEMALE. 



Fig. 24G.— Filaru scapiceps. An- 

 terior EXTREMITY OF FEMALE. 

 v., Vulva; to*/., vagina. 



smooth, and devoid of appendages (fig. 245). The anus is subter- 

 minal. Coils of ovary and oviduct extend anterior of the vulva and 

 posteriorly to near the anus. The vulva (fig. 246) is 1.255 to 1.3 mm. 

 from the anterior extremity. From it a long narrow vagina extends 

 posteriorly in loops; this at times forms a dilation 345 /a long near 

 the vulva. The embryos are very long and filiform. 



Hosts. — Sylvilagiis -fioridanus alacer^ Sylvilagus floridanus mal- 

 lurus {Lepus sylvaticus) , Lepus campestns. 



Location. — Subcutaneous and under the muscular fasciae. 



Locality. — United States (Sulphur, Oklahoma; ? Pennsylvania). 



While the locality for Leidy's specimens is not given, it is likely 

 that they were collected in Pennsylvania, or at least in the United 



