HELIX-ENDODONTA. 83 



delicately but sharply and distinctly spirally striated ; the remain- 

 ing whorls crossed by delicate but sharp radiating riblets, which at 

 the periphery of the last whorl number about 3* in the space of the 

 tenth of a millimeter. Last whorl rounded, scarcely descending in 

 front. Aperture round-lunar, oblique, having one strong entering 

 lamella on the parietal wall, one at the base of the columella, and 

 two dentiform plicae within the outer lip. 



Alt. 0*75, diam, 1'5 mill. 



Antipolo Mts. and Montalban near Manila, Luzon; Zebu on the 

 higher Mts.; Banda Is.; Sirisori, on the island of Saparua. 



Endodonta philippinensis SEMP., Reis. d. Philippinen, p. 140. 

 v. MCELL. Jahrb. d. D. Mai. Ges. xiv, p. 272, 1887 ; and Ber. 

 Senck. Nat. Ges. 1890, p. 221. Endodonta philippinica BCETTGER, 

 Ber. Senck. Nat. Ges. 1891, p. 263. 



Semper's description is very poor. The above description and 

 the figures are drawn from Luzon examples kindly transmitted to 

 me by Dr. von Moellendorff. The outer lip-tooth is situated some- 

 what higher in some examples. The specimen reported by Bcettger 

 from Banda Is. measures, alt. I, diam. If mill., and differs from 

 Cebu examples in having the periphery of the last whorl somewhat 

 natter, and the three palatal teeth rather stronger. Two young 

 specimens from Sirisori had the teeth not yet formed, and were a 

 little higher, with the umbilicus somewhat less wide. 



P. FUSCOZONATA Beddome. PL 30, figs. 39, 40, 41, 42. 



Shell convex, depressed, thin, pale yellowish-brown transversely 

 banded with fuscous bars ; spire scarcely raised, obtuse ; whorls 6, 

 furnished with rather prominent, close, transverse, oblique striations, 

 the suture convex and considerably raised ; the last whorl rather 

 sharply angled at the periphery; umbilicus small but distinct; 

 aperture lunate ; peristome simple, thin ; three elongated lamellae on 

 the parietal wall, which run some way into the shell, two prominent 

 but rather shorter ones opposite on the outer wall, near the um- 

 bilicus and one or two subobsolete ones just beyond these. (BeddJ) 



Diam. 3s, height 2i mill. 



Koror, Pelew Group. 



H. (Endodonta} fuscozonata BEDD., P. Z. S. 1889, p. 116, t. 12, 

 f. 12. 



Nearest to H. constricta Semper, but differs considerably in its 

 prominent striation, sharply angled periphery, and raised sutures. 



