296 



REFERENCE TO PLATES. 



FIGURE. PAGE. 



32, 33. Pomatia cavata Mouss. Ibid, v, f. 1488. . . . 252 

 34, 35. Lysinoe humboldtiana Val. Moll. Mex. et 1'Am. 



Cent. t. 11, f. 1, la 260 



36. Lysinoe humboldtiana Val. Specimen, . . . 260 



37. Lysinoe humboldtiana var. buffbniana Pfr. Moll. Mex. et 



1'Am. Cent. t. 11, f. 2, 260 



