324 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



collection by Dr. J. A. Allen, have the pelage longer throughout, 

 while the tail, especially, is much more bushy. 



Remarks. — To the southward, beyond the Rio Grande, this animal 

 apparently intergrades with Otospermophilus grammurus couchii, a 

 wholly black form described by Professor Baird in 1855, from speci- 

 mens collected by Lieut. D. N. Couch in the Mexican States of Nuevo 

 Leon and Tamaulipas, near the United States and Mexican boundary 

 line. 



OTOSPERMOPHILUS BEECHEYI i Richardson i. 

 CALIFORNIA GROUND-SQUIRREL. 



Arctomys (Spermophilus) beecheyi Richardson, Fauna Boreali-Americana, I, L829, 

 p. 170, pi. xn b (original description and figure); Zoology of Beechey'i 

 Voyage, Mam., 1839, p. 8. 



Arctomys beecheyi, Wagner, Suppl. Schreber's Saugeth., pi. ccxe. 



Spermophilus beecheyi, "F. Cuvier, Suppl. Buffon, Mam., I, 1831, p. 331."- 

 Brandt, Bull. Clause Physico-math. Acad. Imp. Sci. St. Petersb., II, 1844, 

 p. 380.— Baird, Proc. Acad. Nat. Sci. Phila., 1855, p. 334; Mam. X. Am., 

 1857, p. 307, pi. in, fig. 2 (animal); pi. XLVi, fig. 3 (skull). 



Sciurus (Macroxus) californicus Lesson, Descr. de Mam. et d'Ois. Nouv., 1S47, 

 p. 143. 



Spermophilus grammurus var. beecheyi, Allen, Proc. Bost. Soc. Nat. Hist., XVI, 

 1874, ]». 203; Monogr. N. Am. Rodentia, 1877, p. 827. 



[Spermophilus grammurus] beecheyi, Elliot, Field Col. Mus., Zool. Set-., II, L901, 

 j). 88 (Synop. Mam. X. Am.). 



Spermophilus grammurus beecheyi, Miller and Rehn, Proc. Bost. Soc. Nat. Hist., 

 XXX, Dec, 1901, p. 50 (Syst. Results Study X. Am. Mam. to close of 1900). 



Type-locality. — The neighborhood of San Francisco and Monterey, 

 in California. 



Description. — Size smaller than Otospermophilus grammurus (nearly 

 as large as the eastern gray squirrel), with a more slender body and 

 shorter tail. Ears high and pointed. Mammae, six pairs (P. §, A. |, 

 I. |=12). Color above brown, grizzled and annulated with black in a 

 vermicular pattern; darkest anteriorly, and most grizzled and ver- 

 niiculated posteriorly. Nape and sides of neck silver gray, this color 

 prolonged backward above the shoulder in the form of stripes which 

 are sometimes faintly traceable to the root of the tail, though usually 

 ending about the middle of the body. Ears black outside, grayish or 

 faintly rusty inside, and along posterior border. Top of head bister. 

 slightly dusky above orbits, which are encircled by white. Sides of 



"OTOSPERMOPHILUS GRAMMURUS COUCHII | Baird). 

 NKlVo LEON ROCK-SQUIRREL. 



Spermophilus couchii P>airi>, Proc Acad. Xat. Sci. Phila., 1855, p. 332. 

 Slpermophilus] grammurus couchii, Allen, Bull. A.mer. Mus. Xat. Hist., VIII, 



1>. (IS, April 22, L896. 

 Spermophilus grammurus couchii, Miller and Rehn, Proc. Host. Soc. Nat. Hist., 



XXX, I)c<-., L901, p. 50(Syst. Results Study X. Am. Mam. to close of L900). 



