MiniDOCH : NEW ENDODONTA AND FLAMMTTLINA. 163 



Umbilicus deep, narrow, about '5 mm. in diameter ; base somewhat 

 rounded, gradually impressed on approaching the umbilical crater. 

 Diam. maj. 5, min. 4'25mm. ; height 2'8mm. 



Type in my collection. 



Ilab. — Wanganui, Cape Egmont, Toko near Stratford, Manawatu, 

 North Island (R. M.). 



In shell characters this species is intennediate between Allodiscus 

 and Phenacohelix ; the umbilicus and aperture agree well with the 

 former section, whilst the ribbing and colour-markings call to mind 

 the latter. It has been confounded with Phenacohelix piliila, Reeve: 

 Mr. W. Moss has had examples compared with the ix^Q of that species 

 in the British Museum, from which it was found to differ considerably 

 in its smaller size, its more oblique and less broadly lunate aperture, 

 and in its narrow umbilicus ; the latter varies fi-om 25 to -5 mm. The 

 dentition is that of Allodiscus. I have much pleasure in connecting 

 with this species the name of Mr. William Moss, of Ashton-under- 

 Lyne, who has assisted in clearing up the position of this and the 

 preceding species. 



