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EXPLANATION OF PLATES. 
PLATE XII. 
Aig. 1. Otostomus fenéstratus, Pfr. (piescheli, v. Mart.) (p. 200), Manzanillo, type of Bulimulus 
Fig. 
prescheli: 1 a, back view ; 1 8, sculpture, #. 
2. dombeyanus, Pfr. (p. 199), young specimen from Venta de Zopilote, showing a spiral 
band: 2a, back view. 
3. lilacinus, Reeve, var. jansoni, n. (p. 201), Nicaragua: 3a, back view; 34, sculp- 
ture, 4. 
4., , var, undulosus, n. (p. 201), Cerro Zunil. 
5. —— , var. ictericus, n. (p. 202), Cerro Zunil. 
6. , var. unicolor, n. (p. 201), Cholhuitz, living animal from a drawing made by 
Dr. O. Stoll. 
7. josephus, Angas, var. maculosus, n. (p. 202), Rio Pacuare del Sur. 
8. —— , var. concolor, n. (p. 202), Terraba. 
Q, —— , ditto, Rio Savegal: 9a, aperture seen from the side, showing the angle of 
the columellar margin. . 
10. ——- ——, ditto, aperture of a very large specimen, natural size. 
11. delattrei, Pfr., A. b (p. 204), San Gerénimo: 114, back view; 11 4, sculpture, 7. 
12, —— , A. c (p. 204), Coban, an abnormal specimen, slightly angulated. 
13. —— , var. hiabundus, n., B.e (p. 205), Cerro Zunil: 13a, back view. 
14, —— , ditto, B.d (p. 205), Cerro Zunil: 14a, back view. 
15. chiapensis, Pfr., var. quadrifasciatus, n. (p. 205), Cerro de Palmas. 
16. castus, Pfr., var. zantholeucus, n. (p. 206), Sabo: 16a, back view. 
17. —— , A. b (p. 206), Coban. 
18, 19. —— , A,e (p. 206), Coban. 
* 20. —— , var. porrectus, n., C. a (p. 206), Vera Paz. 
21. —— , ditto, C. b (p. 206), Vera Paz. 
PLATE XIII. 
1. Otostomus dunkeri, Pfr. (p. 207), Michoacan. 
2. , var. forreri, Mouss. (p. 207), Ventanas: 2 a, back view. 
3, 4. sulcosus, Pfr. (p. 208), Sierra de las Aguas Escondidas: 3a, sculpture, #. 
5 ghiesbreghti, Pfr., var. stolli, n. (p. 210), Antigua: 5a, back view. 
6. —— , ditto, Quezaltenango, living animal, from a drawing made by Stoll. 
7. —— ——, ditto, Quezaltenango. 
8. , ditto, Volcan de Agua. 
o. — , var. interstitialis, n. (p. 210), Cumbre de San Martin. 
10. —— » var. stolli, n. (p. 210), Volcan de Agua, extraordinarily narrow specimen. 
11, 12, 138. jonasi, Pfr. (p. 212), Antigua, different forms from the same locality. 
14. 
hegewischi, Pfr., var. d (p. 211), Omilteme. 
