NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 91 



Variations. — The genus Puellina as limited by Jullien, 1886, and Levinsen, 

 1909, does not appear to us as well characterized as it is based on the presence of 

 papillae whose physiologic function is not very evident. The relationship of the 

 operculum to the ovicell constitutes for us generic characters of a greater import- 

 ance in the Costulae as in the other Cheilostomata. It is in this feature that the 

 present species is quite different from Puellina (Cribrilina) radiata, for the ovicell 

 is never closed by the operculiun. According to bur views of classification it will 

 be necessary to form a new genus for this type. 



On our specimen the suboral pore is often replaced by a tubercle. The costules 

 are fine and the lacunae are arranged in concentric series. 



Occurrence. — Miocene (Choctawhatchee marl) : Jackson Bluff, Ocklocknee 

 River, 25 miles southwest of Tallahassee, Florida (very rare). 



Geological distribution. — Helvetian of Italy (Seguenza); Astian of Italy 

 (Seguenza) ; Sicilian of Italy (Seguenza, Neviani) ; Quaternary of Italy (Waters, 

 Seguenza, DeStefani). 



Habitat. — England, Mediterranean, Florida. 



Plesiotype.— Cat. Nqt 6853§ji«J.S.N.M. 



PUELLINA CRASSILABIATA, new species. ' 



Plate 29, fig. 7. 



Description. — -The zoarium incrusts oysters. The zooecia are elliptical, regular, 

 very little elongated, distinct, convex, separated by a furrow; the radial costules 

 number 12 and taper toward the center, they are garnished with three large limaen 

 pores and separated by four lacunae of diminishing size. The aperture is semi- 

 lunar; the peristome is salient, very thin, and bears three hollow spines; a thick 

 transverse lip borders the proximal edge of the apertura, between the two small 

 oral avicularia. The ovicell is large, globular, salient, punctured by small, scattered 

 pores; it opens by a special orifice in front of the oral lip. 



„ J A i. \ha = 0.12 mm. „ . |i2 = 0.50mm. 



Measurements. — ^Apertura L „ ,_ Zooecia , _ „^ 



^ lia = 0.10mm. iiz = 0.35mm. 



Ajfinities. — The apertura of the ovicelled zooecia is wider and measures 0.12 mm. 

 in -nddth. The ovicell is not closed by the operculum and the passage of the eggs 

 is protected by the wide oral mucro. This species does not belong, therefore, to 

 the genus Puellina, since the two functions of the passage of the eggs and the escape 

 of the larva operate in an absolutely different fashion than in PuelliTia radiata 

 Moll, 1803. There are six dietcllae. 



In the presence of two small oral avicularia, it resembles the following species : 

 It differs from Puellina puncturata Busk, 1859, in its elongate and nontransverse 

 ovicell. It differs from Puellina calomorpha Reuss, 1866, in its apertura non- 

 transverse and garnished with less than five spines. It differs from Puellina 

 parisiensis Canu, 1917, in its thin nontransverse peristome, garnished with three 

 spines and not with two tuberosities. 



Occurrence.^Pliocene (Waccamaw marl) : Waccamaw River, Horry County. 

 South Carolina (rare) . 



Holotype.— Cut. No. 68529, U.S.N.M. 



