Oliver. — Mollusca of the Eermadec Islands. 549 



Ptychodon pseutes Iredale. 



Ptychodon pseutes Iredale, Pro. Mai. Soc, x, 378, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on the ground under stones, rotten wood, and dead 

 palm-leaves, Sunday Island. 



Ptychodon amandus Iredale. 



Ptychodon amandus Iredale, Pro. Mai. Soc, x, 378, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on the ground under stones, wood, and dead palm- 

 leaves, Sunday Island. 



Charopa macgillivrayana Iredale. 



Charopa macgillivrayana Iredale, Pro. Mai. Soc, x, 379, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on the ground under stones, wood, and leaves on high 

 land only, Sunday Island. 



Charopa exquisita Iredale. 



Charopa exquisita Iredale, Pro. Mai. Soc, x, 379, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on the ground under stones, wood, and leaves, Sunday 

 Island. 



Charopa pseudanguicula Iredale. 



Charopa pseudanguicula Iredale, Pro. Mai. Soc, x, 380, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on the moss-covered trunks of trees, Sunday Island. 



Flammulina miserabilis Iredale. 



Flammulina miserabilis Iredale, Pro. Mai. Soc, x, 383, 1913. 

 Recorded, Iredale, I.e. 



Habitat. — Living on moss-covered trunks of trees, Sunday Island. 



Paralaoma raoulensis Iredale. 



Paralaoma raoulensis Iredale, Pro. Mai. Soc, x, 381, 1913. 

 Recorded, Iredale, I.e. 



Iredale describes a second species of Paralaoma from Sunday Island. 

 I have some hundreds of specimens, which, though the number of lamellae 

 varies, can scarcely be separated into two definable groups. I therefore 

 treat his species as subspecies, which, using his diagnoses, may be thus 

 defined : — 



Subsp. typica. — Periphery rounded, lamellae on last whorl usually 

 exceeding 40. 



Subsp. ambigua (Iredale). — Periphery semi-keeled, lamellae on last 

 whorl usually less than 30. 



Habitat. — Living on the ground under stones, rotten wood, and dead 

 leaves, Sundav Island. 



