NO. i5i,s. PHILIPPINE SNAILS OF GENUS VIVIPARA—BARTSCH. 137 



VIVIPARA ANGULARIS PHILIPPINENSIS Nevill. 



Plate X, fig. 2. 



Palndina philippinensis Nevill, Hand List Moll. Ind. Mus., 1884, p. 24. ? 

 Vhipara hanlei/i Frauenfeld, Verz. Palndina, 1864, p. 618, for P. intermedia, 

 Hanley, Ms., Reeve, fig. 57, 1863, Loi'. ? (not of Deshayes). 



Long. 23, diaui. 19 mm. This is a very closely allied form to /'. jaranica; indeed, 

 pr(>l)ably only a geographical race and perhaps would be better classed a^s a variety of 

 it. It can nevertheless be readily distinguished by the keel on the last whorls, giving 

 the suture a canaliculate appearance by the less developed spiral strut-tnre, by the 

 presence of longitudinal, subobsolete plications, as also by its shoi'ter and more decol- 

 lated form, more convex whorls, the last one snbangulate, darker and duller epider- 

 mis and blacker peristome, which is more or less angulate below. 



Von Martens would not appear to have met with it, as it can not surely be the 

 form he mentions, Mai. Blatt. 1865, p. 148, as a rounded keelless, extreme variety of 

 P. hiirroughland. One of my specimens approaches Reeve's fig. 53 (P. carinata), in 

 the more rounded peristome and less distinct sulmngulation of the last whorl. Seven 

 specimens, Majajay, Luzon; coll. R. Hungerford, escj. 



The above are NevilTs remarks upon this form. Three specimens, 

 Cat. No. 104056, U.8.N.M., one of which is here tigurefl, agree with 

 Reeve's figure 57 and also with the above remarks. V. a. i^hUippineii- 

 sis represents a form of V. angularix^ in which the two supra-periph- 

 eral keels have become obsolete; the peripheral one alone reujains, 

 forming tlie peripheral angle. Its chief marks of distinction, how- 

 ever, lie in alternating narrow dark and light longitudinal bands, the 

 first, the narrower, probably represent resting stages and are usually 

 a trifle more elevated than the broader light areas, and lend the shell 

 an obsoletelv ril)bed appearance. The spiral sculpture, consisting of 

 fine granose spiral lines in T". anguldris^ is in the present form reduced 

 to mere indications of microscopic spiral lines, the surface having a 

 polished appearance. The color in the three specimens varies from 

 light 3"ellowish-green to dark olive-green ground, with narrow longi- 

 tudinal l)rown bands. The specimens at hand, which also come from 

 Luzon, force me to assign this form a place under V. aiu/ularls. The 

 one figured measures: Altitude, 21 mm.; greater diameter, 17 mm. 



VIVIPARA ZAMBOANGENSIS, new species. 



Plate XI, fig. 19. 



Shell conic, thin, dark oliv^e green. Nepionic whorls one and one-half, 

 well rounded, smooth. Succeeding turns somewhat inflated, marked 

 between the sutures by three spiral keels, of which the basal one, which 

 is a little stronger than the other two, marks the periphery. The two 

 post-peripheral keels divide the space between the summit and the 

 periphery of the whorls into three equal, almost flattened areas, which 

 are marked by man}" very fine and .somewhat wavy, spiral lines, that 

 lend the surface a silky luster. The summit of the whorls falls imme- 

 diately below the peripheral keel in all but the last turn; in this it is 



