Mr. W. H. Benson on new Species of Land-Shells. 209 
with an oblique cartilage-pit in each valve; primary teeth none. 
Valves simple within. 
The deep sinus of the pallial line, together with the form of 
the valves and the pellucid vitreous texture of the shell, clearly 
show that this genus belongs to the Scrobiculariate division of the 
Tellinide, and not very far from the Abra of Leach or Syndosmya 
of Récluz. 
1. Theora iridescens, Hinds. 
Neera iridescens, Hds. Proc. Zool. Soc. 1843, p. 78. 
Hab. Yobuko. 
2. Theora fragilis, A. Ad. 
Neera fragilis, A. Ad. Proc. Zool. Soc. 1855, p. 226. 
Hab. Niegata; 7 fathoms. 
3. Theora nitida, Gould. 
Theora nitida, Gld. Otia Conch. p. 162. 
Hab. Scto-Uchi: Simonoseki; 7 fathoms. 
Subgenus Enporievura, A. Ad. 
Shell pellucid, gaping at both sides. Hinge with a bifid 
primary tooth in front of the oblique cartilage-pit. Valves with 
an internal rib extending from the beaks obliquely towards the 
anterior side. 
Endopleura lubrica, Gould. 
Theora lubrica, Gld. Otia Conch. p... 
Hab. Hakodadi; 10 fathoms: Niegata, 7 fathoms. 
XXIII.— Characters of new Land-Shells from the Mahabaleshwar 
Hills in Western India, and from Agra in the North-west 
Provinces. By W. H. Benson, Esq. 
Achatina Arthuri, B. 
A. testa ovato-conica, irregulariter plicato-striata, luteo-fulva, polita, 
translucente ; spira ovato-conica, apice obtuso, sutura impressa ; 
anfractibus 73, convexiusculis, prope suturam subcrenulatis ; aper- 
tura subverticali, elliptico-ovata; peristomate crassiusculo, callo 
parietali infra albido; margine columellari oblique truncato. 
Long. 19, diam. 10, apert. long. 8 mill. 
Habitat ad Neher (Malcolm Peth) montibus Mahabaleshwar dictis. 
A single specimen, in a state too imperfect for description, 
was taken by my son, Lieut. Arthur E. Benson, then in the 
10th Hussars, at the hill-station in question, in 1852. I sent 
a rough sketch to the Rey. 8. B. Fairbank, who searched care- 
fully for it, and has kindly furnished me with three living spe- 
