98 Bulletin ii 98 



Gabb' s description. — "Verj^ elongated and narrow; whorls nine, 

 rounded; suture distindl; mouth very small, oval. 



"Dimensions. — Length, .15 in.; width of body whorl, .025 in.; 

 length of mouth, .02 in. 



''Locality. — Caldwell, Tex." 



The type now in the Phila. Acad. I have figured and it will be 

 given in the forthcoming bulletin on the Lower Claiborne fossils. 

 Specimens from the Lignitic of Alabama show a very faint trace 

 of a fold near the top of the straight columella. 



Lignitic locality. — Ala. : Woods bluff. 



Specimen figured. — Paleont. Mus., Cornell Univ. 



Syrnola dalli var. PI. 12, fig. 14. 



Syn. ? Obeliscus perexilis Con., Am. Jr. Conch., vol. i, pp. 144, 211, pi. 

 20, fig. 2, 1865. 

 Syrnola dalli Coss., Ann. de Geol. and Pal., 1893, p. 22, pi. i, fig. 28. 



Cosstnann' s original description. — "Testa angusta, multispirata, 

 laevigata, anfradlibus parum elevatis; sutura profunda discretis; 

 ultimo ad basim valde rotundato; apertura parva; columella 

 biplicata. 



"Petite coquille etroite, allongee, composeed'un grand nombre 

 de tours etroits et lisses, que separent des sutures profonderaent 

 gravees, mais non canaliculees; le dernier n'est pas grand, et est 

 arrondi et tres convexe a la base, .sans aucune trace d'ombilic; 

 overture petite, rhomboidale, columella armee de deux plis 

 presque egaux, un peu obliques et saillants." 



I do not feel altogether sure of the specific difference between 

 perexilis Con. and dalli Cassman. Regarding a very similar 

 form I found in the Lower Claiborne of Texas, I wrote in my 

 still unpublished report: "By examining a large number of 

 specimens from Claiborne it will be observed' that some show 

 signs of a rudimentary plait below the strong one noted by Con- 

 rad. This feature is noticeable in the Texas specimen." 



Cassmann says the plaits in dalli are almost equal. Again, the 

 suture as figured by him are not the same as in our specimen. 

 Yet both most probably belong to the same species. 



