84 TERRESTRIAL AIR-BREATHING MOLLUSKS. 



A species of the Mexican fauna, but actually found also in the Texas Region. 

 I have not seen any other specimen than the one fij^ured in Vol. III. 

 Animal and dentition unknown. 



Olandina truncata, Gmelin. 

 Vol. III. ris. LIX., LX., LXI., Fig. 2 ; LXIL, Fig. 2. 



Shell strong, ovate-fusiform or ellipsoidal, obtuse at tip, of a pale ashy fawn- 

 color, or rather alternately striped with ash-color and fawn-color, and more or 

 less tinted rose-color, the surface shining and delicately fluted with longitudi- 

 aal, raised, and rounded striae ; whorls 6 or 7, moderately convex, the last 

 constituting three fourths the length of the shell, somewhat compressed at the 

 middle, so as to become in a measure cylindrical, narrowing forward and 

 rounded at base ; suture strongly marked, delicately crenulate ; aperture about 

 one half the length of the shell, often more, and twice as long as broad, narrow, 

 ovate-lunate, acute posteriorly, obtusely rounded anteriorly ; peristome nearly 

 rectilinear at its middle portion, and springing somewhat forwards ; columella 

 arched at its lower portion, and decidedly truncate at base ; throat salmon- 

 colored ; edge of peristome pale. Average length, 37 mill., often very much 

 longer, even 100 mill. ; breadth somewhat more than one third the length. 



Bulla truncata, Gmklin, p. 3434. 



Buccimcm striatum, Chemnitz, IX. 36, Tab. CXX. Fig. 1028, 29? 



Bulimus striatus, BRUGUikRE, Encycl. Meth., I. 366. 



Cochlicopa rosea, F^.russac, Prodrome, 356 ; Hist, des Moll., PI. CXXXV. Fig. 3, 



PI. CXXXVI. Figs. 6-10. 

 Aehatina rosea, Deshayes, Encycl. Meth., II. 10 (1830); ed. Lamarck, VIII. 



313. 

 Aehatina striata, Deshayes in Lam., ed. 3, III. 381. — Chemnitz, ed. 2, Tab. 



III. Figs. 3, 4. 



Aehatina truneata, D'Orbigny, Moll. Cub., I. 163, PI. X. Fig. 13. — Reeve, 

 Conch. Icon., PI. XIII. Fig. 47. — Chemnitz, L c. (Bul.), Tab. XXXVIII. 

 Figs. 21, 22 (Aehatina), No. 78. — Pfeiffer (nee Glandina), Mon., III. 512. 



Polyphemus glans, Montfort, Conch., II. 415, Fig. civ. (1810). — Say, Journ. 

 Acad. Nat. Sci., I. 282 (1818) ; Nich. Enc., ed. 3 (1819) ; ed. Binney, 13, 7. — 

 F^russac, Tabl. Syst, 11. 



Glandina truneata, Say, Anier. Conch., II. PI. XX. (1831) ; ed. Binney, p. 34, 

 PI. XX. ; ed. Chenu (Bib. Conch.), III. 28, PI. VII. Figs. 2, 2 a. — Pfeiffer, 

 Mon. Helic. Viv., II. 286. — DeKay, N. Y. Moll., 56 (1843). — Mrs. Gray, 

 Fig. Moll. An., PI. CCCI. Fig. 5 (ex Bost. Journ.). — Binney, T. M., II. 

 301, Pis. LIX., LX., LXL Fig. 2; LXIL Fig. 2. — W. G. Binney, T. M., 



IV. 141, Pi. LXXX. Fig. 9 ; L. & Fr.-W. Sh., I. 15, Fig. 5 (1869). — Leidy, 

 T. M. U. S., I. 258, 259, Pis. XIV., XVI. (1851), anat. — Wyman, B. J. N. H., 

 IV. 416, PI. XXIII. (1844), anat. — Tryon, Am. Journ. Conch., II. 225 (1866). 

 — Hogg, Tr. Koy. Microsc. Soc. n. s., XVI. PI. XIII. Fig. 84 (dentition). 



Oleacina truncata, Pfeiffer, Mon. Hel. Viv., IV. 638. — lb., Brit. Mus. 

 Pulmonata, p. 23. 



