Vol. 31, pp. 153-154 November 29, 1918 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



FOUR NEW MOLLUSKS FROM THE PHILIPPINE 



ISLANDS. 



BY PAUL BARTSCH*. 



Among several lots of Philippine Islands mollusks sent to the 

 United States National Museum for determination by Mr. 

 Walter F. Webb are four forms that require a name, which is 

 here provided. Mr. Webb, with characteristic generosity, has 

 donated the types of these subspecies to the United States 

 National Museum. 



Cochlostyla mirabilis donsalana, new subspecies. 



In two shells from Donsal, the color of the first three and a quarter 

 turns is white, from there on it gradually changes to wax yellow, deep- 

 ening steadily toward the aperture, behind which it is usually pale olive 

 with a rusty suffusion. The spiral brown color bands may be absent or 

 reduced to a mere line at the summit and a narrow zone a little anterior 

 to the middle of the turns, the latter scarcely reaching the last half of 

 the last turn. No dark area surrounds the insertion of the columella 

 nor are there any spiral bands on the base. The shell is far more ele- 

 vated than is usually the case in forms of Cochlostyla mirabilis and the 

 aperture is very large and very oblique, with a strong reflected white 

 peristome. The interior is white. 



The type, Cat. No. 219021, U. S. N. M., has 5 whorls, and measures: 

 altitude, 43.6 mm. ; greater diameter, 35.6 mm. ; lesser diameter, 30 mm. 

 The other specimen is in Mr. Webb's collection. 



Helicostyla woodiana paracaleana, new subspecies. 



Shell similar to Helicostyla woodiana reevi Broderip, but broader and 

 less elevated, with the general ground color tending toward olive. In 

 Helicostyla woodiana reevi the ground color is chestnut brown. The 

 aperture is very large and considerably broader and shorter than in 



* Published by permission of the Secretary of the Smithsonian Institution. 

 38— Pboc. Biol. Soc. Wash., Vol. 31, 1918. (153) 



