72 PAPPOGEOMYS CRATOGKOMYS. 



Geomys nelsoni Meniam. Biological Survey collection. 



Pnir. Hinl. Soc. Wash., VII, pp. l(J4-lti5, Si-pt<Miil)er 2!), 1892. 

 = Pappogeomys bulleri (Tliuinas'l. Sci' Alcrriaiu, North .Vmcr. Fauna, No. 8, p. 

 147. January :51, 1895. 



il822' Skin and skull. Old iiiaU^ North slope Sierra Nevada de 

 Colinia, Jalisco, Mexico. April 11, 1892. Collected by E. W. 

 Nelson. Original number 2486. 

 Well-made skin in good condition; skull perfect. 



Genus CRATOGEOMYS. 



Pseudostoma castanops l>aird. 



Report Stausbury's Expedition to Great Salt Lake, p. 'MS, June, 1852. 

 =Cratogeomys castanops (Baird). Ree Merriam, North Amer. Fauna, No. 8, p. 

 159, January 31, 1895. 



Iff]. Skin and skull. "Collected by Lieutenant Abert along the 

 prairje road to Bent's P^ort,'' near the pi'esent town of Las Animas, 

 Bent County, Colorado, on the Arkansas River. Catalogued June 

 18, 1800. 



The specimen formerly mounted has been made over into a modern study 

 skin, but it in l)leached and is otherwise in very poor condition. Lower jaw 

 perfect. All the i)Osterior part of the ])rain-case is missing, also the left zygoma. 

 A large fi.'^sure is at base of jostrum, and both u[)per incisors are broken off at 

 the roots. 



Type not designated l)y number, l)Ut Baird, in the Mammals of North America, 

 page 385, says there was but one specimen collected by Lieutenant Abert at the 

 above locality. 



Geomys clarkii Baird. 



Proc. Acad. Nat. Sci. I'hila., VII, p. 332, this pajier was favorably reported 

 for publication April 24, 1S55. 

 =Cratogeomys castanops (Baird). See Merriam, North Amer. Fauna, No. 8, p. 

 159, January 31, 1895. 



fi^j. Skin, skull, and parts of skeleton. Presidio del Norte, on the 

 Rio Grande, Chihuahua, Mexico. Collected by J. H. Cltirk, 

 United States and Mexican Boundary Survey, Maj. \V. H. Emory, 

 U. S. A., commissioner. Skin catalogued February 12, 1852; 

 skull, February 15. 1855, 



Skin was formerly mounte<l, Init was made into a modern study skin August, 

 1898. It is not in first-class condition and appears much l>lcaclied. Skull is in 

 better condition, but both nasals are gone; i)terygoids arc injured and the ascend- 

 ing parts of the right half of mandible are broken. Practically all of the skele- 

 ton is jtresent, but some bones are in the feet of the skin. 



Type not designated l)y number in the original description. By referring to 

 Baird's !\Iammals of North America, page 381, it is seen but two specimens 

 came from Presiilio del Norte and one of them is a skull only, not mentioned 

 in the first description. Moreover, the measurements of No. 6 are exactly 

 those given in the original description. 



