508 MAZATLAN UNIVALVES 
646. (c.) ANACHIS ————, sp. ind. 
Tablet 2424 contains a sp. too much incrusted for identifi- 
cation, which may be a dwarf Anachis c. pachyderma, or a 
distinct species. 
Hab.—Mazatlan ; 1 sp. off Spondylus; L’pool Col. 
647. ANACHIS coronaTA, Sow. 
Columbella coronata, Sow. in Proc. Zool. Sow. 1832, p. 114:— 
Thes. Conch. p. 135, no. 70, pl. 39, f. 184.—Desh. in Lam. 
An. s. Vert. vol. x. no. 32. 
Comp. Columbella costata, Val. Rec. Obs. vol. ii. p. 331. 
PNon Columbella coronata, Ducl. in Chénu, Conch. Lil. pl. 8, 
f. 17, 18.—H.. & A. Ad. Gen. i. 182. 
?=Columbella Terpsichore, Mke. in Zeit. f. Mal. 1851, p. 185, 
no. 64:—(non Sow. Gen. f. 6. W. Indies.)* 
The very few specimens found at Mazatlan, and referred to 
this species by Mr. Gaskoin, differ not a little from the type 
and among themselves. Some are slender, acuminate, with 
the tubercles changed into costx#, except the last few. In 
these the ribs are very numerous and fine. Two others have 
more the typical shape of A. varia, with the ribs further apart, 
and in front slightly tubercular. They are known from the 
previous species by the smoothness of the upper whirls. The 
inside of the outer lip is more finely toothed, (the denticles 
running into grooves,) and is often richly stained. The paint- 
ing is very fine; brownish purple pencilings on a light ground. 
Epidermis very thin, smooth and greenish. An elongated 
specimen measures long. 52, long. spir. °27, lat.°2, alt. 37°. 
A broad sp. REM eun a s ODS 5 yeh Chas aba ea tate 
Hab.—Bay of Panama, under stones, Cuming. — Acapulco, 
Quibo; Gaskoin.—Mazatlan ; extremely rare; L’pool Col. 
Tablet 2425 contains 4 sp. The first dead, bitubercular ; 
the second, richly coloured; the third light, finely ribbed ; 
the fourth light, coarsely ribbed. 
* The Buccinum gilvum of Ivke. in Zeit. f. Mal. 1847, p. 180, no. 13, may 
possibly be a variety of this species. Although described as ‘‘nitida, levigata,”” 
it is said to have 13 longitudinal ribs, gathered above into obsolete nodules, and 
decussated below with lire. White lines ascend the spire, The mouth is oblong, 
the labrum internally lirate, and the labium not callous. 
