SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 125 
fairly constant. forms of Scala hindsii with and without promi- 
nently coronated varices or sharp ridges. Dr. Cooper’s note on 
S. hindsii and S. subcoronata, page 3, State Min. Bu. (Bull. No. 
4, 1894) does not state which form is correct for hindsii. There 
is evidently some confusion in the minds of West Coast co!- 
dectors as to what constitutes typical hindsii if we consider 
subcoronata a synonym. 
PYRAMIDELLIDA: 
Genus Turbonilla Risso 
Turbonilla (Pyrgolampros) arnoldi Dall and Bartsch. 
One specimen Santa Catalina Is., July 1902. identified by 
Dr. Dall. For original description and figure of this species 
consult Arnold’s ‘‘Paleontology and Stratigraphy of San Ped- 
ro,” page 279, plate 1, fig. 7 
Turbonilla (Chemnitzia) panamense C. B. Ad. var. 
San Pedro. Identified by Dr. Wm. H. Dall. P. P. Carpenter 
lists this species in his ‘‘Catalogue of Mazatlan Mollusea,’’ 
page 427. 
Turbonilla (Strioturbonilla) carpenteri Dall and Bartsch. 
Young and worn specimen, Santa Catalina Id., July 1902, 
collected by Miss Estella M. Williamson. This specimen was 
also identified by Dr. Dall, Cur. Div. Moll., U. S. Nat. Mus. 
For ‘‘Synopsis of the Genera, Subgenera and Sections of the 
Family Pyramidellide,’’ by William Healey Dall and Paul 
Bartsch, see Proc. Biol. Soc. Wash., Vol. XVII, pp. 1-16. 
Genus Odostomia Fleming 
Odostomia (Isoza) eucosmia Dall and Bartsch. 
San Diego by Henry Hemphill and identified by Dr. Dall. 
Odostomia exerata var. armata Cpr., Parthenia armata Cpr. 
San Pedro in 1897, from Mrs. T. S. Oldroyd. 
As there has been a revision of Pyramidellidx since this shel! 
was identified this species may belong to the synonomy. As 
before remarked, unless otherwise noted dates refer to time I 
receive specimens. For deseription of this variety and also 
typical species see Carpenter’s Cat. Mazatlan Mollusca, page 
415, where both are deseribed as species. 
Odostomia (Menestho) grammatospira Dall and Bartsch. 
San Diego, Henry Hemphill. Iden. Dr. Dall. 
This species has been called Mumiola amiantis Dall by some 
West Coast collectors. 
For original deseription and figure of this species students 
are referred to Ralph Arnold’s Memoirs, Cal. Acad. Sciences, 
Vol. III, page 285, plate 1, fig. 6x6a. Also to Dall and Bartsch’s 
