THE NAUTILUS. 39 



The species is characterized by its small size, eight or more 

 whorls, relatively wide form and broad color bands. Plate 1 1, fig. 6, 

 represents the type. Length 30.5 mm. An old specimen, length 

 41.5 mm., is shown in fig. 5, and a younger example in fig. 4. All 

 are from San Diego. 



Pleurotoma (Genota) riversiana Raymond. Nautilus, Vol. XVIII, 



p. 14. 



Pliocene. — Santa Monica (Rivers). 



Characterized by narrow form, sharply expressed sculpture and 

 obtuse angle above the middle of the whorls. Plate II, fig. 9, 

 illustrates the type which thus far is the only specimen found. 

 Length 59 mm. 



University of California, July, 1906. 



NOTE ON THE GENUS GLABARIS GRAY OR PATULARIA SWAINSON. 



BY WILLIAM HEALY DALL. 



The genus Patularia Swainson, appears in his Malacology (1840) 

 pp. 287 and 381. There are two species of which the first is Anodon 

 ovatus Swainson, Exotic Conchology pi. xxxvi, 1823, (2nd ed. by 

 Hanley, p. 30, 1841) not Iridina ovata Swainson, Phil. Mag., 1823. 

 The second species A. rotundatus Swainson, is doubtfully referred to 

 Anodonta by Simpson in his Synopsis, p. 638. If it be as he sup- 

 poses synonymous with A. ivoodiana Lea, Swainson's name dating 

 from 1823, will of course take precedence. In 1841 Swainson cites 

 under his Patularia ovata Anodonta trapesialis Lamarck, and Han- 

 ley points out that the latter specific name, being four years older, 

 must take precedence of ovatus Swainson. Anodonta trapesialis, 

 however, in modern classification, is a typical Glabaris of Gray. 

 But Glabaris Gray, dates only from 1847, when the name was 

 applied to A. exotica Lamarck, by Gray, in his list of generic syn- 

 onyms, Proc. Zool. Soc. Lond., 1847, p. 197. 



It would seem, therefore, that, since the first species and type of 

 Patularia is a Glabaris, that the former name should be substituted 

 for the latter in our systems. An examination of the nomenclatore 

 fails to show any earlier use of the generic name Patularia in zoology 

 and there seems to be no reason which would militate against its 

 adoption. 



