1881.] Mollusca of the Indo- Malayan F<mna. 146 



PlIYSA HUNGEREORDIANA, n. sp. 



Shell convexly ovate, imperforate, moderately thick, scarcely trans- 

 parent, somewhat obsoletely striate, stria: close, regular, slightly flexuous ; 

 yellowish brown, generally covered with a dark coloured deposit ; spire 

 turretly produced, suture excavated, apex somewhat obtuse; whorls oV, 

 increasing rapidly, convexly swollen ; aperture narrowly produced, as broad 

 above as below, outer margin gradually rounded ; columella somewhat 

 reflected or thickened, twisted, bent a little backwards at base. 



Long. 13i to 14^, diam. 7| ; apert. alt. 8, lat. 4 mil. 



Hab. — Lucban, Luzon; coll. E.. Hungerford Esq. 



The only other Philippine, or indeed Malayan, species except Ph. moluc- 

 censis, Lesson, is Ph. philippiana, Martens, Malak. Blat. 1867 ; long. 19, 

 diam. 12 mil. 



Kuster's PI. I, figs. 18—20 will give a rough idea of the general shape 

 of Ph. hung erf or diana. 



ACMELLA HUNGERFORDIANA, n. sp. PI. VII, Fig. 11. 



Shell, in shape like Acm. moreletiana, Nev., but a little less turreted, 

 deeply but narrowly umbilicate, smooth, polished, hyaline, so transparent 

 that often the axis can be traced nearly up the apex. Spire regularly 

 conically pointed, suture excavated, narrowly marginate, or rather shelved, 

 below, apex somewhat acute ; whorls 6, increasing very gradually and 

 regularly, the last one convexly globose, faintly depressed near the very 

 characteristic, profoundly excavate, though narrow, umbilicus ; aperture 

 ovately rounded, outer margin regularly convexly rounded ; columella 

 acutely angled about the middle (at the umbilicus), then straight and 

 gradually rounded at base. 



Long. 3|, diam, 2f mil. 



Hab. — Guimaras (Philippines), living on the ground, amongst dead 

 leaves, &c, in company with Cyclotus pusillm, Sow., var. nov., Nanina 

 caducior, Pv., species of Cyclophorm and Pupina, &c. ; coll. Surgeon-Major 

 R. Hungerford. 



This very interesting shell is the finest and largest species of the 

 genus, ■ yet described ; it presents many interesting points of resemblance 

 to my Acm. moreletiana, Proc. Zool. Soc. London, 1879, PI. 59, fig. 4, 

 from Batti Malve (Nicobars). 



Type, Indian Museum, Calcutta ; also in coll. Dohrn and Hungerford. 



Cyclotus pusilltjs, Sowerby. 



P. Z. S. 1843, Luzon and Negros. 



var. nana, nov. 



Differing from the type by its considerably smaller size, non-reflected 



peristome and comparatively slightly more developed spiral sculpture ; the 



