100 



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. 



/. White, with two dark brown 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 oiB. Coste- 

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

 older name of Bruguiere. 



Ji. Entirely white. This variety is of smaller size 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, with two dark brown bands in front, and a very nar- 

 row light brown band behind the circumference. 



Helix Ai-baiensis. Hel. testa subglohosa, depressiuscula, tenuis, 

 ItEvis, alba, plerumque fusco-zonata, lineis incrementi tenuisstmis 

 solilm insculpta ; spird subdepressd, anfractibus 3^ subconvexis, 

 ultimo maximo inflato; aperturd extHs rotundatd ; peritremate albo, 

 rotundato, refiexo, mediocri ; intiis sinuatd, sinu profunda, antici 

 per columellam, latiusculam, album, postici per modificationem 

 anfractus penultimi efformato ; suturd subinconspicud . 



Long. 1-2; lat. I'S poll. 



Hab. supra folia fruticum apud Matnog, Provinciam Albaiensem 

 insulse Luzonicae. 



The following three varieties of this new species have been disco- 

 vered by Mr. Cuming, viz. : — 6 



a. White, with a little light brown at the apex and outside the 

 columellar lip. 



b. White, with two brown bands, one anterior to, and the other 

 posterior to, the circumference of the shell ; a dark brown antesu- 

 tural line and a dark brown band outside the columellar lip. 



c. The same as b, with the two brown bands nearly meeting over 

 the circumference. 



Helix aurata. Hel. testa depressiusculo-subglobosa, tenuis, Itevis, 

 subnitens, flava, apice rosea ; spird rotundato depressd; anfrac- 

 tibus 3^ canvexis, ultimo maxima ; aperturd semiliinari, latd, 

 postici basi ultimi anfractHs gibbosd modificatd ; labia externa 

 postice paululiim coarctato, deinde subreflexo, albo, crassiori, ro- 

 tundato ; columelld albd, latd, subincrassatd ; suturd distinctd. 



Long. 0-9; lat. 1'4 poll. 



