318 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.53. 



MELANELLA (MELANELLA) PRODUCTA Carpenter. 



Plate 39, fig. 5. 



Leiostraca producta Carpenter, Proc. Zool. Soc. London, 1863, p. 357.=Leios- 

 traca ? solitaria Carpenter, Cat. Mazatlan Shells, 1857, p. 439. Not Eulima 

 solilaria C. B. Adams, Ann. Lye. Nat. Hist. New York, 1852, p. 423. 



Carpenter's manuscript figure, a camera lucida sketch, shows a 

 broadly conic young Melanella. I have seen nothing that agrees 

 with it. I add from Carpenter: ' 



"One nearly perfect shell and some fragments answer to the 

 description of this species. It differs from L. iota var. retexta, in 

 being larger, broader, flatter, with the whorls in different proportion 

 Long. (anfr. ix.), 123, long. spir. '08, lat. '046, div. 23°. 



"Hab. — Taboga; a solitary specimen in large Uolothuria; 



"C. B. Adams. — Mazatlan; extremely rare, on Spondyliis; 



"L.'poolCol. 



"Tablet 2022 contains the specimen." 



And again: ^ 



"L. solitaria M. 551, * * * agrees in shape with the unique 

 Panama shell, whorl for whorl; but its base and labrum are much 

 more produced anteriorly. For this reason, it may be known as 

 L. producta." 



He also states under Eulima (? var.) rutila Carpenter:^ 



"Closely allied to Leiostraca producta Carpenter, Maz. Cat. No. 55 1> 

 but displays no varices." 



MELANELLA (MELANELLA) ELODU de Folin. 



Plate 39, fig. 1. 

 Eulima elodia De Folin, Les Meleagrinicoles, 1867, pp. 66, 67, pi, 6, fig. 6. 



"Shell imperforate, elongate, polished, milky-white, subopaque; 

 spire conoidal, the apex rather obtuse. Whorls 11 to 12, slowly 

 increasing, united by a simple suture, the last whorl approximately 

 two-fifths as high as the entire sheU. Aperture cordate, subopaque, 

 rounded at base, the margins a little thickened; the columella feebly 

 reflexed. Long., 0.005; diam., 0.0015. 



"This species is like the other Eulimas, graceful and elegant in 

 outline, and in the beauty of its luster. It is much elongated; the 

 right side is almost rectilinear; the left is slightly convex, but that 

 does not prevent the shell from appearing conoidal. The apex, 

 although very slightly obtuse, may be said to be acute, because it in 

 no way way clashes with the acuminate outline. The spire is com- 

 posed of 11 or 12 whorls, which increase very slowly. The final 

 whorl, which is imperforate, is equal to about two-fifths of the total 



« Cat. Maz. Shells, 1857, p. 439. 



» Free. Zool. Soc. London, 1863, p. 357. 



» Proc. Gala. Acad. Nat. Sci., vol. 3, 18C6, p. 221. 



