ACADEMY OF SCIENCES. O 



Ftisus cinnamomeus, Eve. (Conch. Ic, IG) presents some resemblance to this 

 species, which differs from the former in having a shorter caiuil, a longer 

 spire, more rounded whorls and much deeper sutures, more numerous revolv- 

 ing ridges, which arc also narrower, and especially in the presence of strongly 

 marked, beautifully rounded costae, which become obsolete next the suture 

 and on the last whorl. These costcO recall those on the upper whorls in de- 

 corticated Frkne oregonensis, but are not cancellated. They reach across the 

 whorls in the young shell, fading out anteriorly as it approaches the adult 

 condition. In young shells the epidermis is usually polished and of a bright 

 ruddy browu; in an adult it is raised between the revolving ridges iuto suc- 

 cessive lamelire, which indicate that a fresh and perfect specimen must pre- 

 sent 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 channelled appearance. Excluding the nuclear portion, 

 there are about five ridges on the first five whorls. On the fifth there are 

 about ten costa). On the last whorl of the adult, the costre being evanescent, 

 there are about seventeen main ridges and ten or eleven intercalary threads. 

 The spire is a little longer than the length of tbe aperture plus the canal. 

 In the interior of the aperture (which is white), beside the grooves due to 

 the external ridges, there are numerous very fine incised striae, 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, 2% inches. I have 

 little doubt that this is the shell called by Middendorf Tritonium Sabini, from 

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

 Sabini, which is the same as Fusus berniciensis, King. 



FusDS LUTEOPicTtrs, Dall. n. s. 



Fusus ambuslits, Cpr. Suppl. Eep. Brit. Assoc, 18G3, p. 664 (pars), 



not of Gould. 

 Fusus gemculits, Gabb. Pal. Cal., II, p. 71, (pars. syn. excl.) 

 Fusus ambustus, Cooper, Cat. Montei'ey Shells, Am. Journ. Conch., 



VI, p. 70. Geogr. Cat. No. 787, (most Cala. writers). 



Habitat, Farallone Islands, rare, Watkins; to San Diego, Cala. 



Shell small, fusiform, rather thin, provided with numerous revolving 

 ridges and transverse costae. Aperture plus canal less in length than the 

 spire. Whorls rounded, somewhat excavated near the sutures. General col- 

 oration dark browu, occasionally interrupted on the ridges. CostiB, with that 

 portion of the ridges which pass over them, bright yellow, in dead specimens 

 fading to whitish. On the last whorl, when the costie become obsolete, the 

 lighter coloration is often continued as a light band marked within the ai^er- 

 ture, as well as externally, while the anterior half of the whorl continues 

 dark, the darker coloration appearing on the inner edge of the lip as a brown 

 spot or spots. Spire, when perfect, containing six or seven whorls, the nu- 

 clear portion light colored, with delicate cancellation. Canal short, two- 

 thirds as long as the aperture at most. Aperture rounded-ovate, ^\'ithin white, 



