530 Zoological Society. 



there the similitude ends. The termination of the aperture is below 

 the line of the body-whorl. The shell consequently rests more on 

 its base : it is much more opaque than Car. Regince, and has no 

 angle at the aperture, the inside of which has the iridescence of 

 mother of pearl. The sharp edge of the body- whorl is light yellow. 



Var. a. Planior albido- et luteo-virescens ; anfractu basali maculis 

 albidis obscuris guttato ; basi flavescente ; labii limbo ex albido 

 flavescente. 



Hab. ad insulam Bureas, foliis arborum parvorum hserens. 



Legit H. Cuming in sylvis. 



In this variety, which is much natter, the sharp edge of the body- 

 whorl is whitish. 



Helix (Carocolla) Listeri. Car. testa complanatd, umbilicatd; 

 anfractibus 4, lineis incrementi creberrime striatis, ultimo maximo 

 acuto ; albido-fuscd maculis brunneis guttata, et brunneo uni-fas- 

 ciatd ; peritremate deorsum flexo auriculari, albido ; labii uni- 

 dentati margine acuto, antice lanceolato. 

 Long, f; lat. 1J poll. 



Hab. ad Albay insula? Luzon, truncis arborum hserens. 

 Legit H. Cuming in Sylvis. 



Mr. Cuming had named this species Car. Gallina ; but as it is 

 designated as Car. Listeri on the boards of the British Museum, and 

 as Lister appears to have been the first who figured it, but appa- 

 rently from an imperfect shell, the latter name is retained. 



In colour and in the direction of the form and shape of the aperture 

 it bears much resemblance to Helix auriculata, figured by Mr. Swain- 

 son (Zoological Illustrations, 1st series) from a specimen formerly in 

 the cabinet of Mr. C. Dubois, afterwards in mine, and now in the 

 British Museum ; but in H. auriculata the whorls are comparatively 

 rounded, and the body-whorl is quite round instead of having a sharp 

 edge. H. auriculata is besides, in many individuals, dimpled with 

 small depressions. These differences may be sufficient in the present 

 state of our knowledge to constitute specific distinction ; but whether 

 they are in reality strong enough to form such a separation, may 

 well be doubted. My present impression is, that H. auriculata and 

 H. Listeri are identical ; but I shall return to this subject when I 

 have examined the whole of the cognate series in Mr. Cuming's 

 collection. 



Helix (Carocolla) Parmula. Car. testa valde complanatd, um- 

 bilicatd ; anfractibus 4, lineis incrementi striatis, ultimo maximo, 

 acuto ; fused, lined brunned suturam juxta albam fasciatd, margine 

 anfr actus ultimi acuto, albo ; peritremate deorsiim flexo auriculari ; 

 labii antice sublanceolati subalbidi margine subrefiexo. 

 Long. | ; lat. \ poll. 



Hab. ad Argao insulse Zebu, arborum excelsorum truncis haerens. 

 Legit H. Cuming in sylvis. 

 This is a delicate though not showy species. 

 Yar. a. Elevatior, obscure albens fascia suturali et centrali fuscis 

 ornata. 



