346 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 53 



STROMBIFORMIS PROCA de Folin. 



Plate 47, fig. 1. 

 Eulima proca De Folin, Lea Meleagrinicoles, 1867, pp. 62, 63, pi. 6, fig. 3. 



"Shell imperforate, elongate, acuminate, thin, shining, milky- 

 white above, pinkish below, and spotted along the sutures with trian- 

 gular reddish dots. Whorls 10 to 11; the early ones very narrow, 

 the later wider and more convex. The body whorl approximately 

 equal to one-third the altitude of the entire shell. Aperture cordate ; 

 the margin slightly thickened, the left margin strongly reflected. 

 Long., 0.0033; diam., 0.001. 



"This second species of Eulima is also very pretty and very re- 

 markable. The outlines elongated; the whorls of the spire very 

 acuminate. The later whorls, on the contrary, are somewhat wide 

 and somewhat convex. The sides of the whorls, instead of being 

 simply straight, or describing, as is ordinarily the case, take on, in 

 this species, a double curve. The contour is at first concave, then it 

 becomes convex. In consequence of tliis difference in the margins 

 of the whorls of the spire, the resulting outline is very peculiar, and 

 is a very striking diagnostic. The apex is slightly obtuse; the whorls 

 of the spire are 10 or 11 in number. They increase slowly at first, 

 and without perceptible enlargement, which gives to the early part 

 of the shell, including the five or six whorls, a subcylindric aspect. 

 These whorls are shghtly rounded and are united by a rather deeply 

 impressed suture. Near the eighth whorl the diameter increases, and 

 the suture is fainter and becomes nothing more than a simple, very 

 feebly impressed line. The final whorl is equal to about one-third of 

 the total altitude, and is imperforate. The aperture is cordate, and 

 its margins are somewhat thickened. The left margin is reflected, 

 and they are colored a flaming scarlet. The early whorls, milk-white 

 in color, are well flattened between the sutures and the margins; the 

 later whorls are flesh-colored, or tinged with a clear orange. A few 

 elongated, triangular spots, rather regular, and brilliantly colored in 

 flaming scarlet, are disposed along the sutures, and extend for a short 

 distance in front of it. This peculiar ornamentation adds a stamp 

 of originality to this Eulima. 



"Type locality. — Negritos; or Margarita Island, Panama." 



I have not seen specimens of this species and quote the description 

 and figure. 



STROMBIFORMIS ELEGANTISSIMA de FoUn. 



Plate 47, fig. 3. 

 Eulima elegantissima De Folin, Les Meleagrinicoles, 1867, p. 65, pi. 6, fig. 5. 



"Shell imperforate, oblong, very highly polished, pellucid, orna- 

 mented with two oblique bands, alternated yellow and spotted. 



