106 BUCCINTD^. 



pressed near the suture. Inner lip incrusted ; columella sinuous, short ; 

 outer lip produced in advance. 



This genus seems to be allied in many of its characters to Cominella 

 and Tnincaria. T^ike them, it is compressed adjoining the suture. It 

 shows no trace of umbilicus, as seen in most of the Buccinidae, but its 

 most distinctive character is in its obliquely subtruncated columella, 

 which does not reach to the anterior end of the shell. 



E. TitUNCATA, Gabb. PI. 31. fig. 80. Miocene, San Bonmigo, W- I. 



Genus BRACHYSPHINGUS, Gabb. Shell bucciniform, short, robust, 

 tliick ; sjiire low ; aperture large, notched anteriorly ; outer lip simple ; 

 inner lip incrusted with a smooth callus ; surface longitudinally ribbed or 

 striate. Allied probably to Cominella or Volutharpa. 



B. LiRATUS, Gabb. PI. 31, fig. 81. Cretaceous, California. 



Genus LACINIA, Conrad. Globose ; jiillar lip widely reflected, with 

 a heavy posterior callus ; basal emargination profound ; base dilated ; 

 aperture with a posterior channel ; outer lip simple. 



L. ALVEATA, Conr. (= Pyrula Smithii, Lea). PI. 31, fig. 84. 

 Eocene, Ala. 



Tliis does not diflter very much from the recent Cominella macrilata, 

 Martyn. 



Genus HAYDENIA, Gabb. Shell massive, allied, in general form, to 

 Oliva, sjoire low. Outer lip simple, not thickened nor crenulate ; inner 

 lip incrusted, callus marked posteriorly, without teeth or folds ; canal 

 slightly recurved ; anterior extremity of the mouth notched, and a small 

 sinus at the i^osterior extremity of the aperture, where the outer lip unites 

 with the body- whorl. Surface ornamented as in some of the Buccinidas. 

 This curious form is probably a link between Buccinuin and Volutha7'pa. 



II. IMPRESSA, Gabb. PI. 31, fig. 82. Cretaceous, California. 



Sub-Family PHOTIX.E. 



Genus BUCCITRITON, Conrad. Genus not cliaracterizcd. One of the 

 typical specimens of B. Saf/cnu7n has a single varix on tlie back of the 

 tiie body-whorl but the otlier specimens are without it, so that its non- 

 absori)tion may be regarded as accidental. B. alium is a diftereut type of 

 shell entirely, and looks something like a Truncaria. 



Sarjenclla, Conrad, also uncharacterized, judging from the type, is 

 identical with Baccitriton. 



B. CANCELLATUM, Lca (= SA6ENUM, Conr.) PI. 31, fig. 83. Alabama. 



B. ALTUM, Conr. PI. 31, fig. 85. Eocene, Texas. 



