EXPLANATION OF PLATES. 659 
Fig. 10. Omphatina stulpta, n. (p. 113), Omilteme: 10a and 108, views from above and from 
11. 
12. 
13. 
14. 
15. 
16. 
if. 
18. 
19. 
20. 
2. 
below; 10c, sculpture at the suture, 4. 
Hyalinia hoffmanni, n. (p. 115), Quebrada Honda, #: lla and 11 4, views from above and 
from below ; 11, natural size. 
— paucilirata, Morel. (p. 118), Salama, specimen from Morelet’s collection, ? ; 12@ and 
12 6, views from above and from below 3 12c, natural size. 
arborea, Say (p. 116), Mexican specimen from Las Vigas, 3: 13 4 and 134, views 
from above and from below; 13 ¢, natural size. 
—— glomerula, n. (p. 115), San Luis de Peten, specimen from Morelet’s collection, 2: 
14 a, 6, c, views from three sides ; 14d, natural size. 
stolli, n. (p. 118), Retalhuleu, #: 15. and 15 8, views from above and from below ; 
15 c, natural size. 
Guppya championi, n. (p. 119), Purula, ¢: 16a and 164, views from above and from 
below ; 16 c, natural size. 
trochulina, Morel. (p. 120), San Luis de Peten, Morelet’s original specimen, 2 ; 
17 a, 6, c, views from three sides; 17 d, natural size. 
pitteri, n. (p. 121), San Francisco de Los Rios near San J osé, ¢: 18 a, b, c, views 
from three sides; 18 d, natural size. 
biolleyi, n. (p. 121), La Urraca near San José, +: 19.4, b, c, views from three sides ; 
. 19d, natural size. 
orosciana, n. (p. 123), Calera de San Ramon, #: 20a, 6, c, views from three sides; 
20 d, natural size. 
PLATE VII. 
. Pseudohyalina cidariscus, un. (p. 126), Palenque, from Morelet’s collection, +: 1a, 6, c, 
views from three sides; 1 d, natural size. 
Patula (Thysanophora) turbinella, Morel. (p. 129), Peten, specimen from Morelet’s 
collection, ?: 2a, view from below; 26, natural size. 
. Helix (Acanthinula) punctum, Morel. (p. 181), Merida, from Morelet’s collection, ¢: 
3a, view from below ; 3 4, natural size. 
(Trichodiscina) suturalis, Pfr., var. pressula, Morel. (p. 136), Purula: 4a and 43, 
view from above and from below. 
Polygyra implicata, Beck (p. 164), Jalapa, 7: 5a and 56, views from above and from 
below; 5c, more enlarged view of the aperture, and seen in a different direction, showing 
more fully its whole extent. 
couloni, Shuttl. (p. 167), Maltrata: 6a and 66, views from above and from below ; 
6c, more enlarged view of the aperture ; 6 d, young specimen. 
dissecta, n. (p. 167), Toluca: 7a and 76, views from above and from below; 
7c, enlarged view of the aperture. 
bicruris, Pfr. (p. 168), Ventanas: 8a and 84, views from above and from below ; 
8c, enlarged view of the aperture. | 
richardsoni, n. (p. 168), Mazatlan: 9a and 9 4, views from above and from below ; 
9c, enlarged view of the aperture. 
83* 
