1172 REPORT OF NATIONAL MUSEUM, 1898. 



others less distinct. Along the fifth, sixth, seventh, and eighth rows 

 is a second series of obsolete blotches, each covering a space of about 

 four scales, and just opposite the intervals between the dorsal spots. 

 The dorsal and lower series are separated by an interval of three scales, 

 this interval light brown. Beneath, the color is dull yellowish, and ten 

 or twelve darker half rings are visible on the tail. 



In point of coloration the principal features, as compared with C. a. 

 atrox^lie in the dorsal blotches, being disposed in subquadrate spots 

 instead of subrhomboids; the intervals thus forming bands across the 

 back perpendicular to the longitudinal axis. This tendency to assume 

 the subqnadrangular pattern has broken up the chain-work into 

 isolated portions, as in Osceola doliata trlangula, or Sistrtirxs terge- 

 minus. Tbe intervals of the dorsal blotches are wide and darker in the 

 middle, while in G. a. atrox they are narrow, not linear, and unicolor. 

 The sides of the head present the usual light stripe from the posterior 

 extremity of the superciliary; it i)asses, however, to. the angle of the 

 jaw on the neck, along the second row of scales above the labials. A 

 sscond stripe passes in front of the eye to the labials, widening there. 

 A small light vertical bar is seen below the pit, and another on the 

 outer edge of the rostral. On the superciliaries are seen two light 

 transverse lines inclosing a space nearly one-third of the whole surface. 

 In C. a. atrox there is a single median line. Sometimes, as in C. a. atrox, 

 the single blotches on the n&jje are replaced by two elongated ones 

 parallel to each other. 



Cat. Nos. Scales. Upper labials. Gastrosteges. TJrosteges. Length. Tail. Rattle. 



mm. mm. mm, 



264 27. 14. 185. 24. 



8395 25. 14. 175. 23. 



9318 27. 15. 173. 24. 895. 114. 50. 



Croialus conjiuentus vonjtuentus Say. 



1 



r, A. 1 Number 



Catalogue „j. ^p^^j. 



■ mens. 



4251 

 8396 

 8145 

 8395 

 4227 



8128 

 8399 



Locality. 



When 

 collected. 



San Francisco, California 



Rush Lake, Arizona Aug. — , 1873 



Camp Grant, Arizona — , 1872 



Apache, Arizona i Aug. —,1873 



Red River, Arkansas 



Snake Valley, Nevada 



Fort Wingate, New Mex- 

 ico. 

 Pole Creek, Nebraska 



From whom received. 



H. B. Mollhausen. 



, 1872 



July 26,1873 



Alcoholic. 



do. 



do. 



do. 



Alcoholic 



type. 



Dr. H. C. Yarrow Alcoholic. 



H. W. fleushaw do. 



H. W. Henshaw 



E. Palmer 



Dr. C. G. Newberry 



Capt. R. B. Marcy.U.S. A 



Nature of 

 specimen. 



— , 1872 



Oregon 



San Antonio, Texas 



Provo, IT tab 



Utah 



Republican River 



Rio San Pedro, Texas . . 



Yellowstone 



Cache la Poiulre Eiver. 

 Milk River. Montiina . . 



Fort Lookout 



Utah I Aug. 9. 1859 



Rush Lak", I'tah . 1872 



Montana 



Camp Tliorne | July — , 1878 



Kern River, California I Sei)t. — , 1875 



Dr. W. A. Hammond, U. 

 S.A. 



Dr. C. B. R. Kennerly 



Col. J. D. Graham, U. S. A 



Dr. H. C. Yarrow 



A. Clough 



Dr. C.B.R. Kennerly 

 Dr. F. V. Hayden ..'.. 



Governor Stevens 

 Dr. F. V. Hayden . 



Dr. H. C. Yarrow 



Dr. E. Cones, U.S. A. 



Prof.J. A. Allen 



H. \V. Henshaw 



do. 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



