392 University Geological Survey of Kansas. 



nasals, and all of which are so closely associated with the 

 mandibles, vertebrse and other bones belonging unquestionably 

 to Anogmius that there can be doubt of their generic identity. 



The bone figured on plate XXII (fig. 5) , as a third cerato- 

 branchial of the right side of the new genus Pseudothryptodus , 

 appears to be the anterior internal portion of a maxilla of Anog- 

 mius. The bones shown in figures 4, 6 and 7 I have seen among 

 our specimens in a fragmentary condition. 



On page 252 and plate XXV, the author figures and described 

 a portion of the skull of Saurocephalus broadheadi Steward (sic) *. 

 I have described but one species of Saurocephalus (S. dentatus) , 

 which, on the preceding page, the author places as a synonym 

 of S. lanciformis Harlan. It seems evident that the author has 

 in some way got my two species, Saurocephalus dentatus and 

 Saurodon broadheadi, badly mixed. Later I will show conclu- 

 sively wherein S. dentatus differs from S. lanciformis. Under 

 the name Osmeroides the author describes material which I have 

 placed in the genus Anogmius. Whether or not the author is 

 right in doing so, I cannot say. I may be permitted to state, 

 however, that Dr. A. S. Woodward, after an examination of the 

 material in the University Museum described in the foregoing 

 pages, expressed his opinion that the genus to which it belonged 

 was different from anything that he knew. Possibly a more 

 thorough examination of better material might induce Doctor 

 Woodward to reverse this opinion. Nevertheless, the opinion 

 of so able an ichyologist is worthy of much consideration. 



On page 265 is described " Pachyrhizodus ferox Steward." Evi- 

 dently intended for Pachyrhizodus velox Stewart. 



The name Enchodidse is inadmissible on etymological grounds 

 — it should be Enchodontidse. A. Stewart. 



Kimmswick, Mo., November 3, 1900. 



*Everywhere throughout this paper, and in numerous places, Mr. Stewart's name is wrongly 

 spelled.— s. w. w. 



