On Land- Shells from Muswar Island. 211 



Expanse 62 mm. 



Hob. El Sitio, Juan Vinas. 



There are three distinct forms of what may prove to be the 

 same species : Phaloe ninonia, Druce, with the markings 

 white ; Phaloe cotta, Druce, with the markings pale yellow ; 

 and Phaloe levisi, with the markings greenish yellow. 



Named after Mr. Lewis, of El Sitio. 



XX. — Additional Notes on a Collection of Land- Shells from 

 Muswar Island, New Guinea. By Hugh C. FULTON. 



Pap uina antiqua, Ad. & Rve. 



Additional material from Muswar Island includes specimens 

 which confirm the synonymy given in my former paper * ; it 

 consists of white and of uniform pale yellow specimens, the 

 number of whorls varying from 4f to 5|. In the description 

 of P. horderi, Sowb., it is said to have 6 whorls, but after 

 having examined the type specimen in the British Museum, 

 I find it should really be 5^, agreeing with the figure. 



The following measurements will give some idea of the 

 variation in size and form of this species : — 



Maj. diam. 27^, alt. 31^ mm. 



}> 30, » ol „ 



Papuina pratti, Fulton. 



Further specimens show that this species is excessively 

 variable in form, as the following measurements demon- 

 strate : — 



Maj. diam. 30, alt. 20 mm. 

 „ 30, „ 18 „ 



j> 25, „ 15 ,, 



» 25, „ lo „ 



» 21-g, „ 20 „ 



Two varieties are worthy of note : in one the colour-band 

 is almost or entirely lacking; the other is typical in form and 

 coloration, but is thinner, and the interior of the aperture is 

 strongly granular, perhaps the result of some disease suffered 

 by the mollusc. 



* Ann. & Mag. Nat. Hist. ser. 8, vol. v., April 1910, p. 370. 



14* 



