.^40 Zoological Society. 



nigris variis plerurnque ornata ; anfractibus quinque subvenlri- 

 cosis, tdtimo spiram fere duplo lo7igiori, aperturd subovatd, 

 postict subacuminatd, intus albd, zonas exhibentibus ; peritremate 

 reflexo, albo ; columelld rectiusculd, labio colurnellari subincras- 

 sato, antice reflexo, ad labium externum adjuncto. 

 Hab. ad insulam Ticao Philippinarura. 



This species has been inadvertently figured in the ' Conchological 

 Illustrations' under the name oi Liizonicus, having previously been 

 figured by De F^russac in his 'Hist. Nat. des MoUusques terrestres et 

 fluviatiles,' tab. 112. f. 5, 6, and described in the 'Encycl. Method., by 

 Bruguiere* under the name of ovoideus, which name must of course 

 be retained. Brugui^re's specimen was quite white ; those figured 

 by Lister and De Ferussac had a single dark band. Mr. Cuming 

 has brought the following varieties : — 



a. White, the anterior part of the first three volutions light brown. 

 From the island of Masbate, on leaves of trees. 



b. White, with three broad brown bands close behind the suture. 



c. The same as the last, with an additional black band in front of 

 the postsutural band. 



d. White, with a narrow brown band behind the suture. 



e. Brownish white, with perfectly white antesutural band, and 

 three very broad dark brown bands. 



f. White, with two dark lirown bands, both anterior to the cir- 

 cumference of the shell. 



g. White, with a single dark brown band. This is the variety 

 that has been figured in ' Conch. Illustr.,' Bulinus, f. 53, under the 

 name of B. Luzonicus ; it is also given in Guerin's ' Magazin de 

 Conchyliologie' (1838), tab. 116. f. 2. under the name of 2^. Coste- 

 rii: of course both these names must be abandoned in favour of the 

 older name of Bruguiere. 



h. Entirely white. This variety is of smaller sii;e than most of 

 the others. 



i. Apex reddish brown, ground-colour white; anterior part of the 

 last volution pale brown, with three dark brown bands. 



k. Apex white or pale reddish, antesutural band white ; then two 

 broad dark brown bands, nearly confluent ; then a lighter brown 

 band, sometimes nearly white ; then a broad dark brown band ; and 

 finally, the circumference of the columella white. 



/. White, Avith two dark brown bands in front, and a very nar- 

 row light brown band behind the circumference. 



Helix Albaiensis. Hel. testa subglobosa, depressiuscula, tenuis, 

 Icevis, alba, plerurnque fusco-zonata, lineis incrementi tenuissimis 

 solum insculpta ; spird subdepressd, anfractibus 3^ subconvexis, 

 ultimo maxima inflato ; aperturd e^rtiis rotundatd; peritremate albo, 

 rotundato, reflexo, mediocri ; intiis sinuatd, sinu profunda, antice 

 per columellam, latiusculam, album, pastice per modiflcationem 

 anfracttts penultimi effarmato ; suturd subinconspicud . 



Long. 1-2; lat. 1-5 poll. 



* Hist. Nat. (les Vers, tome vi. p. 3.'5.'». 



