AG.VRDHIA. 151 



folds and horn-brown color ( [Coryna biplicata] var. pollonera 

 Flach, Verhandl. d. phys.-med. Ges. Wiirzburg, n. F., xxiv, 

 1890, p. 7). 



5c. A. biplicata toscania: (Poll.). PI. 16, figs. 3, 4, 5. 



Differs from the typical form by the slightly paler color of 

 the shell, the aperture a little more vertical, by having the 

 callus joining the two margins of the aperture weaker or 

 wanting, by the absence of the supplementary parietal tooth, 

 and by having generally 3, rarely 4 palatal folds. Dimen- 

 sions as in the typical form (Pollonera) . 



The length of the spire is quite variable as in others of the 

 group. 



Italy : Florence in Tuscany and Caramanico, Abruzzo. 

 Post-Pliocene of Tuscany. 



Pupa biplicata Issel, Cat. Moll. prov. di Pisa, 1866, p. 22. — 

 Gredler, Nachrbl., xvii, 1885, p. 37 (Florence). — Pupa tos- 

 cania: Bourguignat, Moll, tumulus de Nove, in Soc. Sci. Lettr. 

 et Arts de Cannes, iii, 1873 (no description). — Pupa biplicata 

 var. toscania: Bgt., Pollonera, Bull. Soc. Malac. Ital., xi, 

 1885, p. 212. — Pupa biplicata forma 1, margidens, Wester- 

 lund, Fauna, iii, 1887, p. 89. 



This is the middle Appenine race. A specimen is figured 

 from Florence, which may be considered type locality. Prob- 

 ably some north-Italian records of biplicata pertain to this 

 race. Length 5, diam. 1.6, length of aperture, 1.5 mm. ; 9 x /2 

 whorls. 



Westerlund thus described his forma margidens: Outer 

 margin of the aperture less thickened, but with a conic tooth 

 above the middle ; border brownish. Florence, in the botan- 

 ical garden at Boboli. 



6. Agardhia excessiva (Gredl.). PL 16, figs. 8, 9. 



With a third punctiform palatal fold between the lower- 

 palatal and the basal keel, deep within, so that it is scarcely 

 to be seen in the mouth, and a fourth punctiform streak under 

 the suture. It also has a second rudimentary and immersed 

 lamella on the parietal wall, between the principal lamella 

 and the outer lip insertion, and a conic second tooth on the 



