232 Zoological Society. 



perilremcite expanso, subreflexo,fusco ; columella alba ; umbilico 

 mediocri. Long. 1'7, lat. I'l poll. 

 Hab. ad insulam Tablas Philippinarum. 



Variat testa omnino pallide lutescente, aperturd peritremuteque alb'is. 

 The two varieties of tliis remarkable species differ so much in 

 colour that they might at first sight be regarded as distinct species ; 

 I do not, however, discover any real difference in their conformation, 

 and therefore am compelled to unite them as varieties. The ridges 

 between the furrows vary greatly in their distance from each other ; 

 they appear to be more and more frequent as the shell increases in 

 age. 



Helix (Helicostyla ? De F.) adusta. Hel. testd oblongd, sub- 

 cylindricd, castaned, Icevigatd, tenuissime llneis incrementi striatd, 

 fascid antemediand pallidiori ; anfractibus senis subventricosis ; 

 sulurd distinctd ; aperturd fere circular}, intus albicante ; peritre- 

 mate leviter expanso, reflexo , fusco ; columelld pallidd ; umbilico 

 parvo. Long. TS, lat. 1" poll. 

 Hab. ad insulam Tablas Philippinarum. 



This species resembles the last in form as well as colour ; it differs, 

 however, in its general proj)ortions, as well as in being entirely free 

 from the numerous and deep oblique grooves so remarkable in that 

 sjjecies ; its umbilicus also is smaller. 



Helix (Helicostyla ? De F.) brachyodon. Hel. testd ovato- 

 subcylindricd, tenui, castaned, fascid anticd pallescente ; anfracti- 

 bus quinque ad sex subventricosis, lineis incrementi tenuiter ob- 

 lique striatis ; suturd distinctd, leviter crenulatd ; aperturd sub- 

 orbiculari, intiis albicante ,• dente obtuso, antico, albo ; peritremate 

 subincrassato, reflexo, subexpanso, interne inter columellum den- 

 temque sinuato ; columelld albd, obtusd ; umbilico parvo. Long. 

 1-95, lat. 1-3 poll. 

 Hab. in foliis arborura prope Puerto Galero ad insulam Mindoro 

 Philippinarum. 



Variat testd breviori, colore saturatiori, striisque fortigribus. Long. 

 1-35, lat. 1-2 poll. 



I have named this species Brachyodon, from a short white tooth 

 placed at the inner and anterior part of the lip, and which appears 

 to be constant, I do not hesitate to regard the shorter specimens as 

 merely a variety, though they differ greatly in their proportions from 

 the typical variety. A single nearly colourless specimen is inter- 

 mediate in its proportions. 



Helix (Cochlogena De F.) pulcherrima. Hel. testd orbiculari, 

 subglobosd, tenuiusculd, haud nitente, spird plerumque subdepressd, 

 arfractibus 41, ventricosis, Icevibus, striis solum incrementi tenu- 

 issimis insculptis, coloribus pulcherrime ornatis, ultimo maxima, 

 ceeteris quadruplh longiori ; suturd distincte impressd ; aperturd 

 rotundato-semilunari, intiis albd, peristomate latiusculo, rotundato, 

 reflexo, extiis ad basin columellce suhsimiato ; columelld dilatatd, 

 subphinulatd. Long. 1'5, lat. 2" poll. 

 Hab. prope St. Jaun in provincia C'agayan insulae Lucon Phi- 

 lippinarum. 



