NORTH AMERICAN LATER TERTIARY AND QUATERNARY BBYOZOA. 



109 



It is therefore probable that its geographic extension is greater than we had sup- 

 posed hitherto. 



Occurrence. — Pleistocene: Santa Barbara, California (very rare). 



Geological distrihution. — Stampian of Germany (Reuss); Casselian of Germany 

 (Reuss) ; Miocene of Australia (Waters) ; Burdigalian of Gard (Canu collection) ; 

 Helvetian of Italy (Seguenza, Neviani), of Gard, of Herault, and of Touraine (Canu 

 collection); Tortonian of Italy (Seguenza), of Austria-Hungary (Reuss); Sahelian 

 of Gran (Canu collection); Zanclean of Italy (Seguenza); Plaisancian of Italy 

 (Manzoni, Neviani) ; Astian of Italy (Seguenza) ; Sicilian of Italy (Neviani, Waters) ; 

 Quaternary of Italy (Neviani, Seguenza). 



Babitat. — Eastern Atlantic; English Channel, Gulf of Gascony (155-180 meters) 

 Madeira, Cape Verde Islands, Azore Islands (89-130 meters). Mediterranean, 

 Black Sea, Adriatic, Corse (5-77 meters), Cette (20-40 meters), Oran (75-121 

 meters) . 



Phsiotype.— Cat. No. 68571, U.S.N.M. 



crjysi 



Fig. 16. — Genus Schizolavclla Canu and Bassler, 1920. 



A-H. Schizolavclla vulgaris Moll, 1803. A. Portion of zoarium vnth an o\'icelled zooecium 

 X 25. B. Two zooecia, X 40, showing the umbonate ovicell and a mucro on the front wall. C. A 

 zooecium, X 40, showing structure. D. Avicularian mandible. (A-D, after Hincks, 1880.) E. 

 Avicularian mandible, X 85. F. Base of the avicularian mandible, X 250. G. Operculum, X 85. (E-G, 

 after Waters, 1898.) H. Ancestrula. The region inside the marginal spines is partly occupied by a 

 calcareous plate (crypt) which is probably a cryptocist; 6. brown body (after Harmer, 1902). 



Genus SCfflZOMAVELLA Canu and Bassler, 1920. 



(For description see Bulletin 106, U. S. National Museum, p. 353.) 



SCHIZOMAVELLA LONGIROSTRATA Hincks, 1883. 



Plate 35, fig.ll. 



1883. Schizoporella longiroslrata Hincks, Report on the Polyzoa of the Queen Charlotte Islands 

 .\nnals Magazine Natural History, ser. 5, vol. 11. p. 4 17, pi. 17, fig. 4 (not Robertson, 1908). 



Measurements. — Apertura 



■Aa = 0.16 mm. 

 Za = 0.14 mm. 



Zooecia 



X3 = 0.56 mm. 



. Iz = 0.36-0.40 mm. 



