298 REPORT ON ALBATROSS MOLLUSCA DALL. 



exception, are continuous, the punctures being arranged along their 

 channels; in 8. interrwptus the spiral sculpture is composed of rows of 

 short or longer punctuations or grooves, which do not unite to form a 

 continuous line except close to the columella iu front, and here rather 

 as the result of crowding aud over-lapping; these short grooves are not 

 punctate at bottom as iu 8. lignarius, but are apt to alternate stronger 

 and weaker, and are more close-set than in lignarius of the same size; 

 maximum longitude of sheli, 33; maximum latitude of shell 17.5; of 

 aperture, 13.5 mm . 



Hab. — Station 2788, west coast of Patagonia, in 1,050 fathoms, mud, 

 temperature 37° ; and Station 2807, near the Galapagos Islands, in 812 

 fathoms, ooze, temperature 3S°.4 F< 



The specimens have been carefully compared with a very large series 

 of 8. lignarius in the Jeffreys collection. 



Subgenus SABATIA Bellardi. 



Sabatia bathymophila Dall. 



S. bathymophila Dall (1831), Bull. Mus. Comp. Zool. xvm, p. 53, PI. xvii, Figs. 9, 

 9b. 1889. 

 This species, which was previously known to extend in deep water as 

 far north as Feruandina, Florida, was obtained at Station 2744, 100 

 miles east from Delaware Bay, in 554 fathoms, mud; and at Station 

 2754, east from Tobago, in 880 fathoms, ooze ; temperatures 38°.9 and 

 37o.9 F. 



Genus CYLICHNA Loven. 



Cylichna Verrillii Dall. 



This species was also obtained at Station 2754. 



Genus ATY3 Mom tort. 



Atys Sanderson! Dall. 



A ? Sandersoni Dall (1881), op. tit. xvm, p. 54, PI. xvii, Fig 7. 



This species was collected at Station 2758, 90 miles southeast from 

 Cape San Eoque, in 20 fathoms, shelly bottom, temperature 79°.l F. 



Family BULLID^E. 



Genus BULLA Linne. 



Bulla Krebsii Dall. 



B. Krebsii Dall, op. cit., xvm, p. 56, 1889. 



This species described from Guadalupe, West Indies, was collected at 

 Station 2754, east from Tobago, in 880 fathoms, ooze; temperature 

 37o.9 F. 



