THE NAUTILUS. 87 



Type F. gulapagana Dall, from deep water near the Galapagos 

 Islands. 



VETUI.ONIA JEFFIIEYSI Dall. 



Trochus cancellatus Jeffreys, Proc. Zoological Soc. London, 1883, 

 p. 96, pi. XX, f. 4 ; not of Minister, in Goldfuss, Petr. Germ. Ill, 

 pp. 58, pi. 181, f. 5, 1842. 



Machseroplax caitce/latus Jeffreys, 1883. 



Margarita cancellata, Kobelt, 1888. 



Solariella cancellata Locard, Rep. Moll. Travailleur et Talisman, 

 II, p. 32, 1898. 



Distribution : Off the coast of Portugal, in N. Lat. 39 55' at a 

 depth of 994 fathoms, bottom temperature 40.3 F. Also Josephine 

 Bank in 340 to 430 fathoms ; Jeffreys. Off the coast of Morocco, in 

 1900 meters, and south of Cape Mondego in 1818 meters; Locard. 

 Yucatan Channel in 400 fathoms ; U. S. Fish Commission. 



VETULONIA GALAPAGANA n. sp. 



Shell small, white, of four moderately convex whorls (the nucleus 

 defective) the suture distinct ; spiral sculpture between the sutures 

 of seven or eight close-set flatfish threads, crossed by (on the last 

 whorl) seventeen narrow, slightly elevated, laminate ribs which be- 

 come obsolete toward the umbilicus on the base ; the last rib form- 

 ing the outer lip is markedly larger and thicker than its predeces- 

 sors ; the umbilicus is funicular, shallow and with no marginating 

 rib, it does not penetrate the axis ; aperture rounded, interrupted by 

 the body whorl, the outer lip reflected, thickened, but with a sharp 

 edge. Operculum unknown. Height 2.2 ; max. diameter 3.4 mm. 



Distribution : Near the Galapagos Islands in 634 fathoms, sand, 

 bottom temperature 39.9 F. } one specimen. U. S. N. Mus., 

 207607. 



This species is larger than V. jeffreysi, has coarser spiral sculp- 

 ture and a smaller umbilicus. I have chosen it for the type, as the 

 Atlantic species is represented in our collection by two specimens 

 which have not formed the thickened lip, and, from the description, 

 the specimens from the Atlantic dredged by the European expedi- 

 tions were also not quite mature. The type is opaque yellowish 

 white, but when fresh was probably translucent white like the At- 

 lantic species. The whole surface is uniformly spirally threaded ex- 

 cept the radiating lamellae. 



