502 MAZATLAN TNlVALTES 



in tlie L'pool Col. (except a very few wliieli I liad secured 

 before the fatal act) were, in spite of my earnest entreaties, 

 subjected to the acid decorticating process for drawing-room 

 purposes. I saw a large box of specimens, in the yard of a 

 London dealer, rapidlj^ approaching the same result by expo- 

 sure to the weather. Opeiculum long, thin, narrow, ungui- 

 culate, nearly straight, rather concave externally : ridges of 

 growth shewing through on the large inner attachment.* 



The young shell has the spire more or less exserted, stoutly 

 nodulous, with the whole surface finely spirally striated : 

 posterior canal rudimentary ; anterior do. very long. The 

 largest sp. measures long. 8'7, long. spir. "2, lat. 6*8, (f/f. 140'. 



Sah. — Acapulco, JSumholdt Sf Bonpland. — Bay of Caraccas ; 

 on mud banks ; Cuming. — Bay of Panama, C. B. Adams. — 

 Mazatlan ; fine and abundant ; L'pool ^' Havre Coll. 



Tablet 2408 contains -4 sp. very young : the smallest is 1 ' 7 

 by '9 ; another retains its operculum. — 2409, 3 sp. adolescent ; 

 the first quite smooth, blackish brown, with one broad white 

 peripheral band, and about 12 narrow lines near the base ; the 

 second brownish black, with extremely numerous very fine 

 white lines in the middle, and a few rudimentary shoulder 

 knobs ; the third well tuberculated, very light brown, with 

 white band and lines, dark at the back of the canal. — 2410, 2 sp. 

 adult : the first begins banded, without tubercles, and ends 

 of a uniform blackish brown, tuberculated ; the other has two 

 very narrow white bands, and has commenced tubereulating 

 after a serious accident to its posterior canal. — 2ill, the largest 

 sp. with its epidermis, partially covered ^^^th Bryozoa. 



Family MUEICIDyE. 



Genus FUSUS, Bmg. 



JEnc. Meth. p. xv, no. 45. — Phil. Sandb. Conch, p. 139. — 

 H. Sf A. Ad. Gen. vol. i. p. 78. — [Non Fusus, {Humph.) 

 Grai/, in Proc. Zool. Sbc. 1847, p. 132.] 



Coins, (Humph.) Gray, in Proc. Zool. Soc. 1847, p. 135, 



639. Fusus PALLiDUS, Brod. ^ Soto. 



Zool. Journ. vol. iv. p. S78.— Zool. Beech. Toy. p. 117, pi. 36, f. 14. 

 = Pvrula liguaria, Rve. Conch. Ic. pi. 9, sp. 12, f. 13, a b, teste 



Hayil. 



• None were found of the large ihells : t. Faaciolaria princeps, p. 459, note. 



