34 Colorado College Studies. 



Measurements. — Length ( roughly ) about two feet; height, 

 exclusive of fins, 121 mm.; tip of snout to insertion of pelvic 

 fin 351; distance between insertion of first ray of pectoral 

 and that of pelvic fin 190 to 195; length of basis of dorsal 

 about 80; length of pectoral, from insertion of first ray to tip 

 of fin, about 95; same of pelvic fin about 52; length of verte- 

 bra' in posterior and midtUe region of body 8.5 to 9. diminish- 

 ing in cervical region to 4.5 mm. or less. There are usually 

 one and a half to two scales in 6 mm. in the oblique rows of 

 the anterior, and two and a half to four in those of the 

 posterior region. One completely exposed scale on the nape 

 has a diameter of 6 mm. 



Occurrence. — Benton stage of the Platte series, in the 

 Feucepost limestone of the Russell substage. All of the known 

 specimens of this fish are from Kansas: those examined in 

 this study being, one from near Bazine, in the eastern part 

 of Ness county, one from near Lincoln Center, and one from 

 an unknown locality probably in or near Russell county. 

 The "Sibley," two miles west of which Prof. Mudge obtained 

 Prof. Cope's type-specimen, is the old Cloud county post- 

 village of Lake Sibley, near the lagoon of that name which 

 is a former northern meander of the Republican river, north- 

 west of Concordia, the present postoSice of Sibley, Kansas, 

 being in Douglas county. 



Remarks. — The writer secured the Bazine specimen and 

 that from Lincoln Center, — the former by purchase, the latter 

 as a gift from Mr. W. S. and Mrs. A. C. Wait,— about 1888- 

 1890, for the Museum of Washburn College, to which he is 

 indebted for the use of them. The Russell (?) county 

 example was of a collection personally purchased by the 

 writer about 1895 from the late Mr. Martin Allen, a former 

 State Forester of Kansas and for many years a resident of 

 Hays City, interested in .science and much esteemed by those 

 who knew him. The Allen collection is part of the large 

 collection purchased a few years ago by General William J. 

 Palmer and the Colorado Springs Company and by them 

 presented to the Museum of Colorado College. 



