352 A MANUAL OF AMKRICAN LAND SHELL?. 



Olandiana Texasiana, W. G. Rinney, T. M., iv, 140 ; v, 87. — Tryon, Am. Journ. Coucli., 



ii, 226, excl. fig. (1866). 

 Oleacmia Texasiana, Pfeiffer, Mod. Hel., iv, 641. 



Texas Region. I have specimens from Brownsville. 

 Fig. 379cr is a fac-simile of oue of Pfeiffer's figures. 

 Formerly I erroneously referred to this species the small form of G. 

 truncata, figured in Vol. Ill, Date LXI, Fig. 2, of Terr. Moll. U. S. 

 Animal not examined. 



SPURIOUS SPECIES OF OLANDINA. 



G. Marminii, Deshay'ES, is referred doubtfully to North America iu Beck's Index, 75. 



SPURIOUS AND EXTRALIMITAL SPECIES OF AGNATHA. 



TestaceUa . (Hitchcock's Geol. Rep. Mass., 1835, 27.) It is impossible to say 



what is referred to ; certainly not a Tesiacella, as that genus is not found 

 native to North America. 



TestaceUa haUoto'uha. A single sjiecimeu found in a greenhouse in Nova Scotia. 

 Probably imported on plants. 



Family LIMACID.^. 



ZOWflTES. (Seep. 201.) 



Zoiiifcs cadiiciis, Pfr. 



Shell umbilicated, depressed, shortly striate, white, with a reddish 

 horn colored epidermis ; spire slightly elevated, apex 

 delicate ; whorls 5i, rather convex, the last much 

 broader, rather flattened below, excavated around the 

 tunnel-like, minutely closed umbilicus; aperture large, 

 obliquely oval ; peristome simple, thin, with ends ap- 

 proaching, joined with a very light callus, the columella one scarcely 

 broadened. Greater diameter 27, lesser 22"""; height, 14'"'". 



Helix caduca, Pfeiffer, Mon. Hel. Viv., i, 89, &c. — Reeve, Cou. Icon., 530. — W. G. 



BiNNEY, Terr. Moll., iv, 105. 

 HiiaUna caduca, Tryon, Am. Journ. Conch., li, 248 (1866). 

 Zonites cadiicus, W. G. Bixxey, L. & Fr.-W. Sh., i, 286^ fig. 513 (1869) ; Terr Moll., v, 



102.— Fischer and Crosse, Moll. Mex., 163, pl.vii, 3 a, 3d (1870). 



Admitted in the catalogue on the authority of Pfeiffer (Roomer's 

 Texas, 4t55), who quotes it from !N^ew Washington. It is a Mexican 

 shell. A specimen from that locality is figured (Fig 380). 



The dentition of Z caducus is known only by the description and fig- 

 ure of Fischer and Crosse (Moll. Mex. et Guat., 149, Plate VIII, Figs. 

 13-lG.) There are 75-1-75 teeth, with 5 laterals. 



