THE NAUTILUS. 55 



(new name for F. rugosus Trask, not of Lamarck, 1804) is recog- 

 nized by its abruptly shouldered whorls, and ranges from San 

 Pedro to San Diego. 



F. monksse, Dall (new name for F. robustus Trask, 1855, not of 

 Beyrich, 1853) is very similar to the next species, but generally 

 heavier and with a shorter canal. It ranges from Banks Island, 

 British Columbia to Pequena Bay on the west side of Lower 

 California. 



F. barbarensis Trask, ranges from the Oregon coast to San 

 Diego. For a long time it was known only by adolescent speci- 

 mens, but I have received a pair 135 mm. long by 38 in diam- 

 eter, dredged off Newport, by Doctor Tremper. 



F. ambustus Gould, 1851, ranges from the Gulf of California 

 to Topolobampo, Mexico. The burnt-sienna blotches on the 

 axial ribs from which the species derived its name, though 

 conspicuous on fresh specimens, gradually fade out after some 

 years in the cabinet. 



F. harfordi Stearns, from Mendocino County, California, may 

 belong with Chrysodomus but the sculpture recalls that of Fusinus. 



F. panamensis Dall, 1908, is still only known by the original 

 specimens from Panama Bay. There is a small mottled species 

 belonging to the same group (Aptyxis?) as F. pulchellus Philippi, 

 Mediterranean, which ranges from the Gulf of California to 

 Panama. It has been labeled by some error F. cinereus Reeve, 

 (which is Say's Urosalpinx) in the collection. It agrees very 

 well with the figure of Reeve's F. taylorianus in the Iconica, and 

 until further data are received about Reeve's type which was of 

 unknown habitat, may best retain that name. A specimen has 

 been received as from San Pedro, but I doubt the accuracy of 

 this attribution. 



F. luteopictus Dall, 1877, ranges from Monterey to the Gulf 

 of California. The yellow color of the ribs fades in time, leav- 

 ing the prominences nearly or quite white. 



A little brownish species has been received from San Pedro 

 Bay from several collectors, which seems to be undescribed. It 

 has five whorls without the nucleus, four or five strong spiral 

 threads between the sutures on the spire and 13-15 on the last 

 whorl, with a few minute and irregular intercalary threads ; the 



