16 BULXiETIN 125, UNITED STATES NATIONAL MUSEUM. 



deprived of zooecia but they bear unicellular ramifications. In this character 

 this new species is close to Terehripora irregularis D'Orbigny, 1839, but it differs 

 from it in that the distance between the zooecia is much less than five or six 

 times their length. 



Occurrence. — Pleistocene: San Pedro, California (rare). 



Holotype.— Cat. No. 68392. U.S.N.M. 



Genus SPATHIPORA Fischer, 1866. 

 SPATHIPORA LONGICAUDA, new species. 



Plate 27, figs. 12,13. 



Description. — The principal axes are linear and do not bear zooecia; they 

 intersect each other at about an angle of 90°. The zooecia are attached to them an d 

 are arranged alternately; they are thin, elongated, fusiform and are provided with 

 a long peduncle; the angle of insertion is about 45°. 



Affinities. — This species differs from Spathipora sertum Fischer, 1863, wide spread 

 in the Helvetian faluns of France, in the great length of the peduncle of insertion. 



Occurrence. — Miocene (St. Marys formation) : 18 miles above Urbana, Middle- 

 sex County, Virginia (very rare) . 



Holotype.—Cat. No. 68393, U.S.N.M. 



SPATHIPORA LONGIRIMA, new species. 



Plate 47, fig. 3. 



Description. — The canalicules are delicate, rectilinear, branching at an angle 

 varying from 45° to 90°. The zooecia are conical, attached directh' to the canal- 

 icules, without a peduncle. The apertura is terminal, orbicular, with a very long 

 rimule prolonged over almost all the frontal. 



Affinities. — This species differs from Spathipora cucullata in which the form is 

 identical, in its very long rimule. It differs from Spathipora longicauda in the ab- 

 sence of a peduncle to the zooecia. 



Occurrence. — Phocene (Waccamaw marl) : Waccamaw, River, Horry County 

 South Carolina (rare). 



Ilohtype.—C&t. No. 68394, U.S.N.M. 



SPATHIPORA CUCULLATA, new species. 



Plate 27, fig. 14. 



Description. — -The canalicules are delicate, deeply buried in the surface of shells ; 

 the ramifications are little obhque. The zooecia are conical, in the form of a cornet 

 of paper; their apertura is at the level of the shell, and their peduncles, attached to 

 a canalicule, arc deeply buried and very short. 



■ Affinities. — Of the preceding species, Spathipora longicauda, we know only the 

 perforations left by the zooecia. In the present one, on the contrary, the zooecium 

 is entire because it is entirely embcdiled in the shell substance. We have no know- 

 ledge of the mechanism employed by this species in perforating the shell. 



Occurence. — Miocene (Yorktown formation): Beulahland, King and Queen 

 County, Virginia (rare). 



Hohtype.— Cat. No. 68395, U.S.N.M. 



