170 University of Texas Bulletin 



lohus, Stacheoceras, and Joannites, while J. P. Smith^ regards the 

 genus as belonging to the family of the Arcestidae and unites it with 

 Shumardites and Cyclolobus in the subfamily Cyclolobinae Zitt. J. P. 

 Smith, however, does not figure a real Cyclolobus, but in its stead 

 Waagenoceras Stachei Gemm., under the name of Cyclolobus Stachei 

 Gemm. ; while he figures on the same page, as a typical Waagenoceras, 

 his W. HUH, which we have discussed in our description of the new 

 genus Perrinites, and shown to be generically different from Waageno- 

 ceras. 



Waagenoceras has been cited from Texas Permian on several oc- 

 casions but most of them belong to our genus Perrinites, as we have 

 shown above. The only specimens which might really belong to Waag- 

 enoceras are some of those which have been described by Girty^ as 

 W. Cumminsi var. Guadalupensis. The shape of most of these speci- 

 mens does not seem to be that of a real Waagenoceras. Girty says 

 that they have a flattened subglobose shape, probably such as is shown 

 in his fig. 24a. The suture taken from this specimen does not look 

 much like that of Waagenoceras, showing hardly any curve at all. I 

 doubt very much that fig. 25 belongs to the same species or perhaps 

 even to the same genus, as the number of lobes is so different, and the 

 suture follows entirely different lines. There must be some error in the 

 explanation of this plate, as it is impossible that both sutures are en- 

 larged twice or the suture fig. 24 could not belong to fig. 24a; nor 

 that of 25a to fig. 25. The only specimen which may represent a real 

 Waagenoceras is that shown in Fig. 26; at least the antisiphonal lobe 

 and the internal saddles are very similar to those of the typical Waag- 

 enoceras. This latter specimen evidently belongs to a very globose 

 shell which has certainly no sort of similarity to the rest of the speci-; 

 mens figured under the same name. Of course it is impossible to say 

 if this specimen belongs to the new species of Waagenoceras which 

 will be described below. 



So far Waagenoceras has only been found in Sicily (if the above 

 mentioned somewhat doubtful specimen figured by Girty in pi. 29, fig. 



'J. p. Smith, in Eastman-Zittel, Textb. of Pal., 2nd ed., p. 642. 

 "Girty, Guadalupian Fauna, p. 502, pi. 29, fig. 23-26. 



