906 



REPORT OF NATIONAL MUSEUM, 1898 



smaller, covering a scale of tlie inferior row and part of the end of the 

 adjacent gastrosteges. The belly is light yellowish, tessellated with 

 square brown spots of various sizes. These become obscure in large 



and old specimens. Two 

 parallel brown bars on 

 the nape diverge as they 

 reach the parietal plates, 

 and receive between them 

 the apex of a lenticular 

 brown spot which ex- 

 tends forward to the mid- 

 dle of the frontal. A 

 cross band of brown oc- 

 cujiies the posterior half 

 of the prefrontal plates. 

 A brown band from the 

 eye to the angle of the 

 mouth crosses the supe- 

 rior parts of the last 

 three superior labials. 

 In large and old specimens these head markings become obsolete. In 

 specimens where the median frontoparietal spot is distinct, it embraces 

 a narrow median spot of the ground color. 



Cat. Kos. 



Fig. 223. 



0PHIBOLU.S CAIXIGASTER SAT. 

 = 1. 



St. Louis, Missouri. 



Cat. No. 1659, U.S.N.M. 



593. 

 1629. 



This handsome species ranges the Mississippi Valley, at no great 

 distance on either side of the river, from Wisconsin to Texas, and it 

 extends throughout northern Texas almost to the Pecos. It was origi- 

 nally described by Say, but remained unknown to other American nat- 

 uralists until its rediscovery by Kennicott thirty-live years later. 



Ophibolus calUgaster Say. 



Locality. 



Canadian River, Arkan- 

 sas. 



St. Louis, Missouri 



North of Colorado River, 

 Texas. 



Neosha Falls, Kansas 



Soutliern Illinois 



Mount Carrael, Illinois 



Central Illinois 



Fort Davis, Texas 



Olnoy, Illinois 



Cooli County, Texas 



Waco, Texas 



When 

 collected. 



Nov. —,1881 



From whom received. 



H. B. MoUhausen 



Dr. Geo. Englemann 



Capt. John Tope, U. S. A 



B.F.Goss 



Dr. Hunter 



L. M. Turner 



R. Kennicott 



W F. von Manteufel . . . 



? Walker 



G. Ragsdale 



C. Brimley 



Nature of 

 specimen. 



Alcoholic. 



do. 

 do. 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



