1916] 



Dickerson: Tejon Eocene of California 



487 



TELLINA JOLLAENSIS, n. sp. 

 Plate 37, figure 3 



Shell small, thin, with subeentral rounded beak; posterior dorsal 

 margin with moderate slope to a pointed posterior ; anterior dorsal 

 margin with but a slight slope to a rounded anterior; ventral margin 

 very broadly rounded ; decoration consisting of fine lines of growth 

 only. 



Named for the occurrence of this species in the La Jolla Quad- 

 rangle, San Diego County, California. 



Dimensions. — Length, 24 mm. ; height, 14 mm. ; thickness of two 

 valves, 5 mm. 



Occurrence. — University of California Locality 2226. 



Gastropoda 



ARCHITECTONICA ULLREYANA, n. sp. 

 Plate 40, figures 5a, 5b 



Shell small, with five whorls coiled in a nearly flat spire. The 

 decoration on the upper surface of the whorls consists of eight to 

 twelve beaded threads. The upper surface of the body whorl is 

 slightly concave and is decorated by about twelve beaded spiral 

 threads. The two threads near the suture are larger than all the rest 

 except the one on the periphery of the body-whorl forms a well- 

 marked keel. The base is decorated by about fifteen nodose spiral 

 threads similar to those upon the upper surface ; a specially strong 

 one marks an angulation upon the body-whorl. Mouth, quadrangular. 



The low spire of this species readily distinguishes it from A. hornii 

 Gabb and A. cognuta Gabb. Its decoration resembles that of A. 

 tuberculata Weaver closely but it has a greater number of threads 

 upon the upper surface of the body whorl. They may be the same 

 species but only the cast of the upper surface of A. tuberculata ex- 

 ists. Their relations will remain indeterminate until better material 

 is found at the type locality of A. tuberculata. University of California 

 Locality 541. 



Named in honor of Mr. Bert Ullrey of West Butte, California, 

 who assisted Mr. Watts in collecting at this locality. 



Dimensions. — Altitude, 2 mm. ; maximum diameter, 5 mm. 

 Occurrence. — University of California Locality 1853. 



