ART. 14 FOSSIL AND EECENT BRYOZOA GANJI ANP BASSLER 93 



Genus SCHIZOPODRELLA Canu and Bassler, 1917 



SCHIZOPODRELLA INCRASSATA, new species 



Plate 9, Figures 1-4 



?1923. GemelUporella vorax Canu and Bassler part, North American Later 

 Tertiary and Quaternary Bryozoa. Bull. 125, U. S. National 

 Museum, p. Ill, pi. 19, fig. 1. 



Description. — The zoarium encrusts algae, or more often develops 



into bilamellar fronds, dichotomous and compressed laterally. The 



young zooecia only are distinct, elongated, convex, all the others are 



indistinct with thick frontal and with irregularly arranged avicu- 



laria; the frontal is formed by an olocyst perforated by very small 



pores surmounted by a very thick tremocyst with large scattered 



pores. The ovicell of the young zooecia is globular and of the other 



zooecia is little visible, not salient, embedded in the calcified wall 



of the tremocyst; it is finely porous. Two small avicularia are 



arranged symmetrically on each side of the apertural sinus; a large 



zooecial avicularium, orbicular and salient, is distributed irregularly 



on the old zooecia. 



T,, ■ . ^ fA,a = 0.10 mm. 



Measurements. — Apertures , ^ ^^ ^ ^„ 



^ Ua. = 0.06-0.08 mm. 



■^r • [is = 0.40 mm. 



Young zooecia , ^ __ 



Us = 0.30 mm. 



Structur e.-^-^rTThis species is very difficult to study because of its ir- 

 regularity and its structure is visible only on preparations. Even on 

 the young zooecia the tremopores are not apparent. They appear, on 

 the contrary, very clearly on the interior especially on preparations 

 examined by transparency. The muscular attachments of the oper- 

 pulum are placed far from the edge and toward the superior part. 



It is probable that Figure 1, on plate 19 of our 1923 work, which 

 we have considered as a variety of GemelUporella vorax, really belongs 

 to the present species. Our specimens were in reproduction March 

 19, 1885. 

 Occurrence. — Albatross Station D. 2405, Gulf of Mexico; 28° 45' 

 00'' N.; 85° 02' 00" W.; 30fms.; gray sand, broken 

 coral (bilamellar). 

 Albatross Station D. 2639, Straits of Florida; 25° 04' 

 50" N.; 80° 15' 10" W.; 56 fms.; coral sand (unila- 

 mellar). ? Pliocene of South Carolina. 

 Molotype.--C&t. No. 7585, U.S.N.M. 



SCHIZOPODRELLA FLORIDANA Osbnrn, 1914 



Plate 10, Figures 4-6; text Figure 15 d, e 



1914. Schizoporella floridana Osburn, Bryozoa of the Tortugas Islands, 

 Florida. Publication Carnegie Institution, Washington, no. 182, p. 

 205, figs. 17, 18. 



