THK NAUTILUS. 89 



yielded no evidence of these snails on the trees or of their shells on 

 the ground. Glandina and many smaller snail shells were found. 



When 1 reached Palm Beach, on Lake Worth, I called on a 

 dealer in shells, who told me he had sold many Liguus from Miami, 

 but had iound none around Lake Worth. He said he had placed a 

 number of snails from Miam.i around Lake Worth, in the hammock, 

 but the snails died. 



At present, therefore, New River is apparently the northern limit 

 of Liguus on the East Coast; and satisfactory evidence is lacking that 

 it ever extended further north. 



NEW LAND SNAILS FROM NORTH CAROLINA. 



BY II. A. I'll.SHUV. 



Polygyra appressn trijoniond n. suhsp. 



The ^hell is imperforate, similar in shape to P. appressa; rather 

 dark greenish-brown ; very glos.sy. Sculpture on the last 4 whorls 

 of regular, tine, curved riblets, vv'hich are slightly narrower than 

 their intervals, and fine engraved spiral lines, more prominent in the 

 intervals tiian on the ribs. The first (embryonic) 1^ whorls are 

 densely scul[)tured to the apex with obliquely radial striie, followed 

 by a small fraction of a whorl with coarser, irregular strise before the 

 ril)lets set in. Spire convexly conic. Whorls 5^ to 5|, slowly in- 

 creasing, the last somewhat angular at the periphery in front. The 

 suture descends slightly to the aperture. The aperture is very 

 oblique, somewhat " dished." 'J'he peristome is very wide, strongly 

 thickened within, contracting the aperture, and broadly, flatly re- 

 flexed ; white, with a fleshy outer border in all but old shells. The 

 back of the lip is bright yellow, this color spreading to form a tri- 

 angular sjmt at the suture. A stout, strongly curved parietal tooth 

 stands on the |)arietal wall. 



Alt. 11, diain. 17..") mm. 



Alt. 10.;>, diam. 17 mm. 



Tryon, Polk Co., North Carolina. Types no 887G9 A. N. S. P., 

 collected by H. A. Green. 



This form resembles P. appressa perigraptu in sculpture and 

 shape, although a little less depressed than that form. It differs in 

 the wider peristome, which contracts the aperture more, and in the 



