190 TORNATELLINA. 



titrobilus conu'itx ANTON, Ve-rzeiclmiss, etc., 1839, p. 46, no. 

 1696. 



Said by Pfeiffer to be the young of T. trochiformis ; if so, 

 the name conica has priority. 



51. T. TROCHIFORMIS 'Beck' Pfeiffer. PL 53, fig. 14. 



"Shell conic, subtrochiforrn, striate, a little shining, cor- 

 neous ; whorls 10, flat, the last carinate, scarcely one-third the 

 total length ; aperture short, lunate ; columella having a double 

 lamelliform tooth at the base ; peristome simple. Length 4y 2 , 

 diam. 2% mm. Opara, Anton (Pfr., 1842). 



"Shell conic, subtrochiform, thin, striatulate, pellucid, 

 glossy, brown-corneous ; spire conic, apex acute; suture linear, 

 subniargined : whorls 10 to 11, narrow, flat, the last not half 

 tlic total length, carinate, the base a little convex. Aperture 

 depressed, lunar, having a low lamina on the parietal wall and 

 a horizontal fold winding inwards on the very short colu- 

 mella ; peristome acute. Length 5 to 6, tliain. 3 to S 1 ^ mm., 

 oblique length of aperture 2 mm. Island of Juan Fernan- 

 dez ' (Pfr., 1848). 



Tornatcllina trochiformis BECK, Index Molluscorum, p. 80, 

 no. 2, 1837, nude name. PFR., Symbolse, 1842, ii, p. 55; 

 Monographia, ii, p. 392 ; iii, p. 525 ; iv, p. 651 ; vi, p. 263. 

 KUESTER, Conchylien Cabinet, Pupa, p. 154, pi. 18, figs. 28, 29. 

 -E. A. SMITH, P. Z. S., 1884, p. 280 (Juan Fernandez, Chal- 

 lenger Exped.). Strobilus fissidcns Mublf., Anton, Verzeich- 

 niss, p. 46, no. 1695, undescribed, according to Pfeiffer. 

 Khismatina cumingiana PETIT, Proe. Zool. Soc. Lond., 1843, 

 p. 2 (July, 3843). 



This species was first defined by Pfeiffer, who gave the 

 locality Opara, on Anton's authority. Subsequently he cor- 

 rected it to Juan Fernandez, and gave a new description. He 

 also, in the Mo>io</ri>lii<i, stated that tftrobilux conicus An- 

 ton was the young of trochiformis, doubtless from an exami- 

 nation of Anton's type. E. cumin gia-n-a, which Pfeiffer con- 

 sidered a synonym of trochiformif;, is thus described. 



"Elasmatwia cumingwna. Shell ovate-conic, pyramidal, 

 pellucid, dilute corneous-brownish; whorls 10-11, subplanu- 



