MOLLUSC A. 
241 
Necera, On the species of Nesera found in the seas of Japan. 
By A. Adams. Ann. & Mag. Nat. Hist. 1864, xiii. pp. 206-209. 
— The species of this genus are referred to seven generic divi- 
sions. 
1. Nc(era proper, with N. elegans, Hinds Adams and Reeve, 
and three new species from Japan, N. nohilisy N. Mndsiana, and A. nasuta 
(p.207). 
2. JRMnomga, g. n., with Necera phtUppinensis, Hinds, and N. rugatay sp. n., 
p. 207, from Japan. 
3. Cardiomgay g. n., with Necera goiddianay Hinds. 
4. Leptomyay g. n., with N. coclilearUy Hinds, and Sci'ohicularia aduncay 
Gould. 
5. Lciomyay g. n., with N. aduncay Gould. 
6. Theora, with N iridescensy Hinds, Ad., and nitiday Gould. 
7. JSndopleuray g. n., with Theora luhricay Gould. 
Pandora. Contributions towards a monograph of the Pando- 
ridfe. By P. P. Carpenter. Proc. Zool. Soc. 1 864, pp. 596-603. 
The author has recognized four generic types :— *■ 
1. Clidiophoray g. n., with internal linear process as in Anatina (named clavicle 
by the author) and with ossicle in the hinge ; the most highly organized 
forms of the family. North American. Qowican^ Pandora claviculata 
ter), tahacea (Meuschen), trilineata (Say), nasuta (^ow.)y punctata (Conrad), 
dcprcssa (Sow.), cornuta (C. B. Adams) (which name, because ‘‘calculated to 
mislead,” is changed by the author into acutedcntato), and perhaps also P. dis“ 
cors and arciiata (Sow.); and finally Clidiopliora cristatay sp. n.,p. 597, from 
the Gulf of California. 
2. Cododony g. n., without clavicle and ossicle, but possessing a tent-shaped 
dentition in the left valve. East Indian. Pandora ceylanica (Sow.), cumingii 
(Hanley), delicata (A. Adams), Jlexuosa (Sow.), perhaps unguiculus (Sow.), 
and finally Ccelodon elongatuSy sp. n., p. 600, from China and Borneo. 
3. Pandora (Lam.) is to be limited to the species without clavicle, tent, or 
ossicle, as the typical rostrata (Lam.), obtusa (Lam.), brevifrons (Sow.), cistula 
(Gould), ohlonga (Sow.), radiata (Sow.), and wardiana (A. Adams). 
4. Kennerliay g. n., with ossicle, without clavicle. North Pacific and 
Arctic Oceans. Connects Pandora and Myodora. Named in honour of Dr. 
Kennerley, the late naturalist to the American North Pacific Boundary Sur- 
vey. Pandora glacialis (Sow.) and two new species : Kennerlia Jilosay p. 602, 
from Puget Sound, and K. bicarinatay p. 602, from Catalina Island, California. 
Order CABDIACEA, Cuv. ( Veneraceay Adams.) 
Mactrid^. 
Mactra ludorjliy Hunker, Mai. Blatt. p. 99, from Jesso in Japan ; Mactra 
amygdala, Crosse et Fischer, Journ. Conch, p. 349, from S. Australia; Mactra 
i^Mulinia') pmguisy Crosse et Fischer, 1. c., from S. Australia. 
1864. [voL. I.] 
R 
