16 Proceedings of the Biological Society of Washington. 



Suture feebly impressed. Periphery of the last whorl strongly carinated. 

 Base evenly, gently rounded with a decided umbilical depression and a 

 slender perforation which is about one-third as wide as the umbilical 

 callus. Aperture oval, decidely angulated at the periphery ; lip but slightly 

 thickened; columella strongly reflected at its insertion where it forms a 

 narrow callus; parietal wall glazed with a thin callus. 



The type and two specimens of this species, Cat. No. 219,038, U. S. N. M., 

 donated by Mr. Webb, come from La Union, Davao, Mindanao. The 

 type has 5.9 whorls and measures: altitude, 21.2 mm.; greater diameter, 

 35.9 mm.; lesser diameter, 31.6 mm. Another specimen, Cat. No. 256,242, 

 U. S. N. M., was collected by Dr. E. A. Mearns at Sulug on the east shore 

 of the Gulf of Davao, Mindanao. 



Trochomorpha repanda pagbilaoensis, new subspecies. 



Shell resembling Trochomorpha repanda repanda M Ollendorff in colo- 

 ration but less shiny and decidely smaller and a trifle more elevated. The 

 upper surface of the whorls is marked by closely and regularly spaced, 

 finely incised, wavy spiral lines in the present subspecies, while in Trocho- 

 morpha repanda repanda M Ollendorff, the incised spiral markings are 

 confined to the upper surface of the early whorls and they are extremely 

 feeble. The under surface of the present subspecies is marked by numerous 

 well incised spiral lines which are much stronger than those that mark 

 the under surface of Trochomorpha repanda repanda M Ollendorff. In the 

 strength of the spiral markings of the under surface, the present subspecies 

 appears to stand about half way between Trochomorpha repanda repanda 

 M Ollendorff and Trochomorpha repanda Candida M Ollendorff. 



The type and another specimen of the present form, Cat. No. 310,053, 

 U. S. N. M., were collected by Mr. Gilbert Perez, on the Greater Pagbilao 

 Island, off the west coast of Tayabas, Central Luzon. The type has 5.5 

 whorls and measures: altitude, 4.5 mm.; greater diameter, 12.5 mm.; 

 lesser diameter, 10.8 mm. Trochomorpha repanda repanda M Ollendorff was 

 described from Montalban, Luzon, while Trochomorpha repanda Candida 

 comes from Marinduque Island. 



Cochlostyla fulgetrum tayasana, new subspecies. 



In 1840 Broderip defined Bulinus fulgetrum on page 119 of the Proceed- 

 ings of the Zoological Society of London. Here he describes varieties a to 

 k. Of these varieties, a, b, e, f and h are listed from the Island of Negros, 

 c, d and g from the Island of Guimaras and i and k from the Island of 

 Panay. Cochlostyla fulgetrum fulgetrum in the restricted sense has been 

 fixed upon the shells of Negros and other designations have been applied 

 to those from Guimaras and Panay. 



The Isaac Lea collection in the U. S. National Museum contains four 

 specimens, two adult and two immature, which are cotypes gathered by 

 Cuming on the Island of Negros. These agree perfectly in outline and 

 coloration with the specimens from Cabancalan on the west side of the 

 north coast and others from Escalante on the east side of the north coast 



