MICROTUS. 83 



Skin poorly made up; tail not skinned out. It looks rather discolored. The 

 fatalojxne entry says "Dry," but the sin'cinien looks as if it had been in alcohol 

 at one time. An old pan-hnient label further bears out tiiis view. Skull in- 

 jured about the ptery;j;oids; both bull.c, e.<pecially the left, and the ri^iht zy<^oma 

 somewhat injured. The ascon(lin<r parts of left half of mandible broken away. 

 ■ Type not designated l)y number. In the entry nf the skin in LS72 (twelve 

 years after entry of the skull") under tlie remarks column of the catalogue is 

 written in the handwriting of the original entry " tyjje of californicus." The 

 old parchment label on the specimen is marked "Arvicola Californica Peale." 

 One of Dr. Coues's labels is attached, marked " Monograph of American Muri- 

 . dae. Dr. p:iliott Coues, U. S. A., No. 10082. Type of Arvicola 'californica.'" 

 On page 534 of Mammals of North America, Baird speaks of having the origi- 

 nal specimen. In the table on page 173, INIonographs of North American 

 Rodeiitia, Dr. Coues has 10082 marked as the type of '' calif oniicits.'^ 



Microtus nanus canescens Baile}'. Biological Survej^ collection. 



Proc. Biol. Soc. Wash., XII, pp. 87-88, April 30, 1898. 



90577. Skin and skull. Adult male. Conconull}', Washington. Sep- 

 tember 12, 1897. Collected by J. A. Loring. Original number 

 4654. 



Well-made skin in good condition; skull lacking entire rostral jiortion except 

 one loose upper incisor; right audital bulla injured; antei'ior wall of brain case 

 perforated; ends of lower incisors broken off. 



Microtus canicaudus Miller. Biological Surve}^ collection. 



Proc. Biol. Soc. Wash., XI, pp. 67-()8, April 21, 1897. 



75841. Skin and skull. Adult male. McCoy, Oregon. December 1, 

 1895. Collected by B. J. Bretherton. Original number 219. 



Well-made skin in good condition; skull perfect, except for absence of left 

 coronoid process. 



Arvicola (Pedomys) cinnamomea Baird. 



Mammals of North America, p. 541, pi. 54, [Specimen No. 1714] (teeth), 1S57. 

 = Microtus ochrogaster (Wagner). See Osgood, Proc. Biol. Soc. Wash., XX, 

 p. 48, April 18, 1907. 



tVA- Skin (lost) and .skull. Adult male. Pembina, North Dakota. 

 Collected l^v C. Cavileer. Original number 28. Catalogued March 

 19, 1855. 



The skin, number 591, according to a note in the catalogue, was misplaced 

 before 1890 and has not been found since. Skull in fair condition; pterygoids 

 broken, both malars lacking, and pieces broken off the processes of the mandible. 



Bainl had but one specimen, the above, designated by nund)er. 



Bailey, North American Fauna No. 17, page 74, saj'S, "Except for a slightly 

 abnormal tooth pattern, Baird's type of cinuamoinea is a large specimen of typ- 

 ical amterus. I can not believe that it ever came from Pembma." 



^'Bailey (North Amer. Fauna, No. 17, p. 35) thinks the skull is abnormal or never 

 came from the same animal as the skin. This lapse of time between the two entries 

 substantiates the latter view. 



