208 Mr. A. Adams on Species of Nezera from Japan. 
liris corrugatis, subincrassatis ; antice rotundata, postice rostrata ; 
rostro elongato, attenuato, apice truncato, 
Lat. 4 lin., alt. 23 lin. 
Hab. Tabu-Sima; 25 fathoms. 
A small species, very much resembling in form N. Philippi- 
nensis, Hds., but with the surface of the valves concentrically 
rugosely striate. . 
Subgenus Carpiomya, A. Ad. 
Shell inequivalve. Surface of the valves radiately ribbed, 
Right valve with a prominent posterior lateral tooth. 
Cardiomya Gouldiana, Hinds. 
Neera Gouldiana, Hds. Proc. Zool. Soc. 1843, p. 77. 
Hab. Uraga, 21 fathoms; Gotto, 48 fathoms; Tsu-Sima, 
25 fathoms, 
Genus Lerromya, A. Ad. 
Shell thin, ventricose, beaked posteriorly. Surface of valves 
lamellar. Hinge with an oblique cartilage-pit in each valve. 
Right valve with two anterior primary tecth; left valve with a 
single primary tooth. Lateral teeth none. Pallial sinus deep. 
This genus belongs to the family Tellinide, and is closely 
allied to Serobicularia. 
1. Leptomya cochlearis, Hinds. 
Neera cochlearis, Wds. Proc. Zool. Soc. 1844, p. 98. 
Hab. Gotto; 48 fathoms: Seto-Uchi; 7 fathoms. 
2. Leptomya adunca, Gould. 
Scrobicularia (Capsa) adunca, Gld. Otia Conch. p. 167. 
Hab, Tsu-Sima; 30 fathoms. 
Subgenus Leromya, A. Ad. 
Shell thin, ventricose, hyaline, beaked posteriorly. Hinge 
with an internal cartilage-pit in each valve. Right valve with 
two anterior primary teeth ; left valve with a single primary 
tooth. Lateral teeth two, strong, prominent. 
Letomya adunca, Gould. 
Neera adunca, Gld. Otia Conch. p. 162. 
Hab. Seto-Uchi; 7 fathoms: Hakodadi, 7 fathoms. 
Genus Turora, H. & A. Ad. 
Shell thin, smooth, pellucid, gaping at both sides. Hinge 
