418 MOLLUSKS OF THE GALAPAGOS* STEARNS. 



14. Gaza Rathbimi Dall. 

 Station 2818, in 392 fathoms. 



15. Haliotis Pourtalesii? D.iU. 



Station 2815, in 33 fathoms, sand, near Charles Island. 

 Subsequently in the "• Nautilus," Jaiuiary, 1892, INIr. Dall deseribed 

 the following terrestrial forms collectt'd by Dr. G. Baur. 



16. Helicina (Idesa) nesiotica Dall. 



The first speeies of the family rej^orted from the Galapagos; Chat- 

 ham Island, on leaves of plants 1,()00 feet above the sea. Mr. Dall 

 remarks, "the type is not unknown in the Panamic region, but is said 

 to be absent from the west slope of the Andes." 



17. Leptinaiia chathaniensis Dall. 



" Chatham Island, on ferns at 1,(500 to 2,000 feet above the sea. Some- 

 what analogous forms are found in the mountains of the Panamic 

 region." 



18. Zonites (Hyalinia) Bauii Dall. 



^' South Albemarle Island, on weathered bones of tortoises. * * * 

 The absence of any form of Helix or Zonites has been commented on 

 by most of those naturalists Avho have treated of the Galapagos shell- 

 fauna, and it was certainly a most extraordinary deficiency from any 

 point of view. This discovery of Dr. Baur's removes the most strik- 

 ing anomaly of the fauna." 



