202 TORNATELLIDES, HAWAIIAN ISLANDS. 



Galapagos Is.: Chatham Island, ou ferns at 1,600-2,000 ft. 

 above the sea; South Albemarle Island on dry bones of tor- 

 toises (Baur) ; Iguana Cove, Albemarle Island (Snodgrass 

 and Heller). 



Leptinaria chathamensis BALL, Nautilus, v, 1892, p. 98; 

 Proc. Acad. Nat. Sci. Phila., 1896, p. 451, pi. 16, f. 9 ; pi. 17, f. 

 16. STEARNS, Proe. U. S. Nat. Mus., xvi, 1893, pp. 418, 428. 

 Bulimidus (Pelecostoma) cymatoferus REIBISCH, Isis, 1892, 

 pt. 3, p. 14, pi. 2, f. 7 (Chatham Is., Wolf). Tornatellina, 

 chathamensis DALL, Proc. A. N. S. Phila., 1900, p. 95. 



A copy of the original figure of B. cymatoferus is given in 

 fig. 18. Fig. 17 is a copy of Mr. W. G. Blimey 's sketch of a 

 tooth of T. chathamensis. 



4. Hawaiian species. 

 Key to Hawaiian species of the Group of T. simplex. 



This Hawaiian group comprises species with relatively 

 simple apertural armature, similar to those of Polynesia and 

 other islands. The other Hawaiian groups are all special to 

 that archipelago. 



a. Parietal lamella of adults very low, less than 0.07 mm. in 

 height. 



b. Adult shells more than 3 mm. in length. 



c. Diameter less than 50 per cent of the length. 

 d. Adult shells more than 3.6 mm. in length, 

 umbilicus rather large, aperture diagonal. 



T. konaensis, no. 17. 



d l . Adult shells less than 3.3 mm. in length, 



umbilicus narrow, aperture not diagonal. 



T. kahoolavensis, no. 16. 



c 1 . Diameter half the length; 3x1.5 mm., with 6 

 whorls; umbilicus larger than that of kahoo- 

 lavensis. T. kahukuensis, no. 14. 

 c 2 . Diameter about 55 per cent, of the length; 

 3.5 x 2 mm. T. procerulus, no. 11. 

 C 3 '. Diameter about 65 per cent, of the length; 

 3.3 x 2.1 mm. T. kilanea. no. 13. 



