456 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Genus SMITTINA Norman, 1903. 
1880. Swift ia Hincks, British Marine Polyzoa, p. 340 (preoccupied). 
1903. Smittina Norman, Notes on the Natural History of East Finmark, Annals and 
Magazine Natural History, ser. 7, vol. 12, p. 120. 
In the apertura there is a lyrula and two cardelles. The frontal is an olocyst, 
perforated laterally with areolae and supporting a granular or eostulate pleurocyst. 
A. Smittina B. Plagiosmittia C. Mucronella D. Ramphostomella 
E. Cystisella 
F. Porella G. Umbonula H. Phoceana 
Fig. 331. — Genera of the family Smittinidae, Levinsen, 1909. 
1. Bryocryptella 
A. Smittina reticulata MacGillivray, 1842. 
B. Plagiosmittia rcgularis Canu and Bassler, 3917, X 20. Jacksonian of North Carolina. 
C. Mucronella peachi Johnston, 1847, X 50. Recent. 
I>. Ramphostomella costata Lorenz, 1886. Recent. 
E. Cystisella saccata Busk 1856, X 25. Recent. 
F. Porella cervicornis Pallas, 1766, X 20. Recent. 
G. TJmbonula verrucosa Esper, X 25. Recent. 
H. Phoceana eolumnaris Jullien, 1913, X 10. Recent. 
I. Bryocrjjptella torquata Jullien, 1903. Recent. 
The anterior indentation of the peristome contains an avicularium very often tri- 
angular. 13-19 tentacles. 
Genotype. — Smittina ( Lepralia ) reticulata MacGillivray, 1842. 
Range— s-Lutetian-Recent. 
The difference between Smittina and Porella appeared very difficult in the old 
days, and the form of the avicularium was alone taken into consideration. A form 
