THE NAUTILUS. 12H 



XIII. 



VIVIPARA ZAMBOANGENSIS Bartsch. PI. VIII, fig. 8. 



Vivipara zamboangensis Bartsch. Pr. U. S. Nat. Mue. . 

 XXXII, 1907, p. 137, pi. XI, fig. 19. 



This species was also collected by Steere many years ago at 

 Zamboanga. The operculum (fig. 8) shows that it belongs to 

 ihejavanicus group. I have also received it from the Geneva 

 (Switzerland) Museum, but without exact locality, labeled 

 u angularis Mull." by Brot. 



A single specimen (pi. IX, fig. 9) from Bugasong, Antique, 

 Panay, was received from Mr. Webb, which resembles the 

 typical form in shape, but differs in the details of the carina- 

 tion. The peripheral and shoulder keels are as in the type, 

 but the central one has disappeared and the space between the 

 two that remain is divided by four lesser keels, of which the 

 two in the middle are a little more prominent; the whole surface 

 is very finely, spirally lirate as in the type but rather stronger. 

 The lip is black-edged and bluish-white within. The apical 

 whorls are dark purple, which passes into a yellowish-green on 

 the intermediate whorls and become a darker green on the body- 

 whorl. The umbilicus is as in the typical form. 



This form may be called V. zamboangensis duplocinctus. 



The type (No. 45204 Coll. "Walker) has 5^ whorls and meas- 

 ures: alt. 25.2, diam. 17.2 mm. 



I am indebted to Dr. Pilsbry for photographic copies of 

 Lister's description and figure and also of P. carinata Sw. and 

 N. angularis Miill. And to Miss Mina L. Winslow of the 

 Museum of Zoology, University of Michigan, for the reproduc- 

 tion of Philippi's figures of P. tricarinata Ant. 



SUPPLEMENTAL NOTE. 



Since the foregoing paper was written I find that Bavay 

 found the original and unique type of Paludina tricostata Les- 

 son in the Museum of Paris and figured it in his paper on the 

 " Land and Fresh-Water Shells of New Guinea " (Nova Guinea, 

 1908, p. 270, pi. XIV, fig. 1). Unfortunately he added noth- 

 ing to the meagre description of Lesson, but contented himself 

 with giving an apparently excellent, life-size figure. Although 



