368 PROCEEDINGS OF THE NATIONAL MUSEUM. 



? CIRCULUS KOSSELLINUS, new species. 



Shell minute, white, solid, depressed turbinate, of two-and-a-half 

 whorls, including the smooth nucleus; suture distinct; sculpture of 

 numerous close-set spiral threads rather large for the size of the shell, 

 crossed by m.icroscopic incremental lines; base rounded, with a nar- 

 row deep umbilicus; aperture subcircular, the outer lip sharp, much 

 produced above, pillar lip thickened, not reflected; height, 0.75; 

 longer diameter, 2 mm. U. S. Nat. Mus. Cat. No. 223286. 



T[ipe-locality. — Off South Coronado Island, near San Diego, Cali- 

 fornia, collected by Dr. Fred Baker, in three fathoms. 



GANESA (GBANIGYSA) FIONA, new species. 



Shell minute, white, of about three well-rounded vrhorls of whicn 

 the smooth small nucleus forms one; suture deep; surface covered 

 with a minute subgranular vermiculation, the incremental lines hardly 

 perceptible; base evenly rounded, the umbilicus narrow; the aperture 

 subcircular, the margin slightly thickened, not interrupted by the 

 body; height, 2; diameter, 2 mm. U. S. Nat. Mus. Cat. No. 207624. 



Type-locality. — U. S. Fish Commission station 2808, near the Gala- 

 pagos Islands, in 634 fathoms, coral sand; bottom temperature, 

 39.9° F. 



GANESA (GRANIGYKA) FILOSA, new species. 



This species is much like the preceding one but mth coarser sculp- 

 ture in which the elevations take the form of somewhat irregular 

 slightly retractive very narrow folds, stronger near the suture and on 

 the base, less conspicuous on the periphery, and with a subsculpture 

 of revolving striae which at, times roughen the threadlike folds; the 

 shell has one more whorl than G. jnona but in all respects except those 

 above noted is extremely similar; the operculum is horny, subtranslu- 

 cent and multispiral; height, 2.3 ; diameter, 2.5 mm.. U. S. Nat. Mus. 

 Cat. No. 207602. 



Type-locality. — This is the same as that of G. piona. 



In her useful paper on Cyclostrema., Adeorlis, etc., in the Transac- 

 tions of the Connecticut Academy of vSciences* Miss Bush proposes a 

 new genus Lissospira with subordination of older nam.es as subgenera 

 or sections. The correct arrangement, however, would have been to 

 accept Ganesa Jeffreys, 1883, as the genus, with Granigym Dall, 1889, 

 as subgenus and Lissospira Bush, 1897, as a section of the latter, with 

 smooth or nongranular shell. From a smooth shell to one with gran- 

 ules and by coalescence of granules into vermiculation, and this into 

 plications, is a series of steps not too difficult or important. 



1 Vol. 10, 1897, pp. 98-144. 



