XENOMYS. 291 
56. XNenomys. 
l=; M22 = 16. 
Xenomys Merr., Proc. Biol. Soc. Wash., vil, 1892, p> Loe: Type 
Xenomys nelsont Merriam. 
Bulle large, elongated, and parallel to axis of skull; vertical ridge 
on anterior border of squamosal; this last terminates between pos- 
terior root of zygoma and occiput; paroccipital processes long and 
Fic. 47. XENOMYS NELSONI. 
No. 45286 U.S. Nat. Mus. Coll. Enlarged % 
