HELIX-SATSUMA. 203 



inated at the periphery, little deflexed in front, convex on the base. 

 Aperture transversely lunar, angulated ; peristome concolored, the 

 terminations joined by a very thin rather indistinct callus ; the 

 superior margin expanded, basal margin reflexed, columellar 

 dilated, half covering the umbilicus (Hid.'). 

 Alt. 15, diam. 22 mill. 



Penon de Bintuan, Island of Busuanga, Philippines (Quadras). 



Helix planasi HID., Journ. de Conch., 1889, p. 300, t. 13, f. 3 ; 

 Obras Malacol. i, p. 52, 142. 



This species has entirely the form of Trochomorpha cacuminifera 

 Bens. (Rve. Conch. Icon. Helix, f. 744, and Hanley, Conch. Indica, t. 

 liv, fig. 4), but it is more depressed below, and wider at the base ; it 

 has 6 instead of 8 whorls, and the sculpture is different. The sur- 

 face-folds are visible beneath as well as above, this part being smooth 

 in Tr. cacuminifera (Hid.~). 



H. HYPERTELEIA Morlet. PI. 53, figs. 70, 71, 72. 



Shell narrowly and deeply umbilicated, discoidal, covered with a 

 thin horn-colored epidermis ; upper surface flattened, conic, not 

 shining ; lower surface convex. Spire acute and projecting ; 

 whorls 8, flattened, regularly increasing, separated by a margined 

 suture, finely granulous on the radiating riblets. The first two 

 whorls are papillose, yellowish, smooth, the third whorl is pale 

 ashen ; the rest are ornamented with radiating oblique folds crossed 

 by very fine spiral threads, and are of a whitish color with a narrow 

 median brown zone; last whorl not descending, acutely keeled at 

 the periphery, the keel finely crenulated ; base whitish, with a 

 narrow brown zone, having radiating strise which become obsolete 

 toward the umbilicus, and are crossed by very delicate concentric 

 threads. Aperture semilunar, the terminations of the peristome 

 connected by a thin callosity ; lip subreflexed, basal margin 

 reflexed, white (Mori.} 



Alt. 9, greater diam. 21*, lesser 19 mill. 



Kham-Keute, Laos (Massie). 



Helix (Plectotropis) hyperteleia L. MORLET, Journ. de Conch, 

 xl, p. 82, 1892 ; L c. p. 316, t. 6, f. 2a-b. 



This peculiar species is referred by Morlet to Plectotropis, but we 



* V 



incline to the belief that it is a true Satsuma. 





