Vol. 32, pp. 15-20 April 11, 1919 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



CRITICAL REMARKS ON PHILIPPINE LANDSHELLS 

 WITH DESCRIPTIONS OF NEW FORMS. 



BY PAUL BARTSCH.i 



The present paper embraces descriptions of new forms of 

 Philippine Island landshells and a discussion of involved 

 nomenclatorial problems concerning some of the names be- 

 stowed upon species long ago. The facts presented were 

 brought out in the examination of material sent to the United 

 States National Museum for determination, chiefly by Mr. 

 Walter F. Webb, of Rochester, N. Y., whose indefatigable 

 efforts in the Philippine field are rapidly increasing our knowl- 

 edge of the mollusk fauna of that region. Other forms were 

 transmitted by Mr. Gilbert S. Perez, Industrial Supervisor, at 

 Lucena, in Tayabas, Luzon, while still others are the product 

 of the late Colonel Edgar A. Mearns' collecting in the Philippine 

 Islands, and one new form was the gift of Mr. Wm. H. Weeks, 

 of Brooklyn, N. Y. 



The types of all the new material are in the United States 

 National Museum, as well as additional representative speci- 

 mens. These were donated by the gentlemen above mentioned. 



Hemiglypta webbi, new species. 



Shell dark horn colored, broadly conic, very thin, with strongly cari- 

 nated periphery. Upper surface of the whorls moderately rounded. The 

 first half turn marked by strong wavy axial wrinkles, which is succeeded 

 by a half turn that is finely wrinkled; from there on, the axial sculpture 

 consists of fine retractively slanting, wavy threads, which are separated 

 by spaces about as wide as the threads. The spiral sculpture consists of 

 fine incised fines which break the axial threads into a series of slender 

 elongated tubercles having their long axis parallel with the axial threads, 

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

 6— Pboc. Biol. Soc. Wash., Vol. 32, 1919. (15) 



