238 NILS HJ. ODHNER 
general. No cases were found in which these advanced neanic no more than 
normal neanic ones, were fertile; the strong lamellae seem to prevent the 
breeding of young ones. In the complete absence of lamellae, except the colu- 
mellar one, the ephebic stage resembles the gerontic, in opposition to the fol- 
lowing species. 
Localities: Masatierra, Aug. 1917: Round Portezuelo, 570 m above sea, on 
ferns, some sps., max. h. 4 (neanic), and 5,1 (gerontic st.). — The Portezuelo 
quebrada, about 300 m, on ferns, many sps. (all stages, figs. 38—4o0, with varying 
dentition of aperture), max. h. 3,7. — Centinela Ridge, about 500 m, under 
ferns, numerous neanic shs. (figs. 41, 42), max. h. 2,85, and 5 small gerontic, 
max. h. 4, and 350 m, 3 small neanic shs. — Rabanal, about 300m, 3 neanic 
and 1 small gerontic sh.; in the quebrada, under leaves, I neanic and I ephebic 
(h. 4) sh. — Puerto Ingles, about 400 m, thick forest, I neanic sp., h. 2,4. — 
Below Damajuana, thick forest, I neanic sp., h. 2,;. — Piedra Agujeriada Valley, 
I neanic sp., h. 2,4. 
Tornatellina callosa n. sp. Pl. 9, figs. 43, 44. — Shell turriform, with 
slightly convex whorls, shining and smooth, except irregular fine growth costellae 
and faint traces of spiral striae; last whorl well rounded. Aperture about a 
third of the shell height, narrowly semilunate; columella short, with a thick 
projecting, entering lamella, above and beneath it callous; the sinus beneath the 
columella filled with a callus and furnished with a small tooth. Aperture in the 
neanic and the ephebic (fig. 43) stages with a very strong parietal lamella 
bent upwards with its edge, as well as a strong palatal lamella opposite to the 
columellar fold. Colour horn-brown, suture margined with a red-brown line. 
Dimensions of gerontic stage: h. 3,6, h. of ap. 1,3; br. I,7, br. of ap. 0,9 mm. 
Whorls 62/2. 
Localities: Masatierra, Aug. 1917: Centinela Ridge, about 500 m above sea, 
on ferns and under leaves, 4 gerontic (fig. 44) and some neanic and 1 ephebic 
(fig. 43) sps., max. h. 3,6; 350 m, thick forest, 3 gerontic shs., max. h. 3,5. — 
Rabanal, about 300 m, 3 gerontic shs., max. h. 3,8, and about 400 m, under 
leaves, 1 gerontic sh., h. 3,5. 
Remarks: In this species the young shell seems to be equipped with 
lamellae even up to the ephebic stage: in one specimen (fig. 43) examined for 
young ones one small nepionic shell was found having a small columellar and 
a parietal tooth, but only some faint traces of palatal ribs (fig. 18,7). The 
scantity of material makes it impossible to state whether this stage is a true 
ephebic or a transition from the neanic stage. 
Tornatellina aperta n. sp. Pl. 9, figs. 45, 46. — Shell small, with slightly 
convex whorls, the last one flattened above and below the middle, with a blunt 
angle in the periphery; spire turrited, aperture shorter than half the shell, 
rather wide and almost rhomboidal, columella with a short slightly prominent 
fold in the middle, deeply sinuous in its lower part. Colour grayish horn-brown 
with stripes of light yellowish gray. Sculpture: only oblique and irregular lines 
of growth, here and there acquiring the shape of fine costae. Dimensions: height 3, 
h. of aperture 1,4, br. 1,8 mm; whorls 5. 
