VOL. XIV 



1891 



'^•] PKOCEEDINGS OF THE NATIONAL MUSEUM. 179 



shells the epidermis is usually polished aud of a bright ruddy brown ; 

 in an adult it is raised between the revolving ridges into successive 

 lamellae, which indicate that a fresh and perfect specimen must present 

 a pubescent appearance, verging on shagginess. The interspaces in the 

 posterior whorls are about as wide as the revolving ridges, but on the 

 last whorl smaller intercalary ridges appear, especially on the anterior 

 half of the whorl. There is a tendency to a smoothish space on each 

 side of the suture, which gives it a channeled appearance. Excluding 

 the nuclear portion, there are about five ridges on the first five whorls. 

 On the fifth there are about ten costie. On the last whorl of the adult, 

 the costive being evanescent, there are about seventeen main ridges and 

 ten or eleven intercalary threads. The spire is a little longer than the 

 length of the aperture plus the canal. In the interior of the aperture 

 (which is white), besides the grooves due to the external ridges, there 

 are numerous very fine incised strise, not quite reaching the margin, and 

 a rather strong groove at the junction of this whorl with the last. 

 There is no siphonal fasciole. Length, 56 millimetres. I have little 

 doubt that this is the shell called by ]\Iiddendorf Tritonium Sabiiii, from 

 Keiiai ; at least, there is no other shell of the coast resembling Gray's 

 Fnsus Sahini. As this species has never been figured, I take this oppor- 

 tunity of illustrating it. The types are in the National Museum col- 

 lection. 



Fusus corpulentus Courad. 



Ftmis corpulentus Conrad, Geol. of the U. S. Expl. Exp., p. 728, PI. 20, Fig. 4, 1849. 

 Priscofusus corjjulentus Conrad, Am. Jonrn. Conch., 1865, p. 1.50. 



In a nodule of Miocene sandstone from Astoria, Oregon. 



The type is still preserved in the national collection, though at one 

 time thought to be lost. Specimens i)robably of this species have been 

 obtained from the Miocene of Dead Man-s Island, near Long Beach, 

 San Pedro, California. The original type is merely an internal cast, 

 and certain identification is impossible. The species is a true Fusus, 

 with fine spiral ridges and occasional faint transverse riblets on the 

 upper whorls. It resembles very much the Fusus Burnsii Dall, from the 

 Miocene of Petersburg, Virginia, but I regard the two as distinct 

 species. Specimens have been sent for examination from California by 

 Miss Sarah P. Monks and Mrs. M. Burton Williamson, who obtained 

 them from Dead Man's Island. Fusus geniculus of Conrad, described 

 at the same time from an imperfect cast, is wholly unidentifiable. There 

 are three species of i^ws^s described from the Santa Barbara Tertiary 

 by Trask in the Proc. Cal. Acad. Sciences, I. p. 42, 1885; of which F. 

 Barharensis and F. rohusius seem identifiable with living forms from 

 that region, but the subject requires further study. 



