54 University of Texas Bulletin 



Dimensions: 



Height of the last whorl 5.6 mm (1) 



Width of the last whorl 4.2 0.75 



Height of the preceding whorl 2.1 (1) 



Width of the preceding whorl 1.9 0.90 



Relation to other species : 



As we have only two fragments, it is difificult to compare their 

 shape to that of the species described from other locaHties. It seems 

 that our form has the flanks more flattened and the ventral part 

 somewhat broader than Daraelites Meeki, as well as Daraelites ele- 

 gans. The real distinguishing characteristic is to be found in the 

 suture line. In our species, the first lateral lobe is nearly as broad as 

 the siphonal, while in D. Meeki it is about half as wide, and in D. ele- 

 gans much less than half as wide, as the siphonal. Our species has 

 seven saddles while D. Meeki has only six. D. elegans has apparently 

 the same number of saddles as our species. 



Age: 



Wolfcamp formation, lower Permo-Carboniferous. • 



Number of specimens examined: 



Two fragments. The species is evidently very rare at the locality. 



Locality: 



Immediately northwest of Wolf Camp, Glass Mountains. 



