100 Mr. A. Adams on the Recent Japanese Brachiopods. 



Fam. Rhynchonellidae. 

 Genus Hhynchonella, Fischer. 

 1. Rhynchonella lucida, Gould. 

 Hah. Satanomosaki ; 55 fathoms. Gotto ; 48 fathoms. 



Dr. Gould observes that this species might be taken for a 

 small T. vitrea, but is very thin and delicate, and further dis- 

 tinguished by the absence of punctures. His examples were 

 dredged off the Japan coast, 30° 35' N., 130° 40' E., in 110 fa- 

 thoms sand, by Capt. Stevens, of the ' Hancock.' 



2. Rhynchonella Woodwardii, A. Adams. 



R. testa subtrigonulari, tumida, nigricante, semiopaca ; valvis sub- 

 sequalibus, impunctatis, concentrice striolatis ; umbone rostriformi, 

 parvo, curvato, apice acute ; margine ventrali rotundato, in medio 

 producto. 



Hab. Rifunsiri ; 35 fathoms. Gotto ; 48 fathoms. 



This species diflfers from R. psittacea in being concentrically 

 striolate instead of radiately grooved ; the beak, moreover, is 

 smaller and less curved ; the form is more broadly triangular, 

 and the ventral margin is rounded and produced in the middle. 

 The young possess the same characters seen in more adult 

 specimens. 



Fam. Crauiidse. 



Genus Crania, Retzius. 



Crania Japonica, A. Adams. 



C. testa crassa, solida, suborbiculari ; valva superiore convexa, ru- 

 gosa, apice elate, subcentrali ; margine irregulari ; impressienibus 

 muscularibus validis, rotundatis, apephysi interna bifurcata, pro- 

 minente ; impressione pallii multilobata. 



Hab. Gotto Islands ; 71 fathoms. 



A very distinct and well-marked species, with the bifurcate 

 process in the upper valve very prominent and conspicuous. 



Fam. DiscinidaB. 



Genus Discina, Lamarck. 



Discina stella, Gould. 



Hab. Seto-Uchi (Akasi) ; 17 fathoms. Tsu-Sima; 17 fathoms. 

 Tabu-Sima; 26 fathoms, on coral. Tsu-Sima; 25 fathoms. 



Fam. Lingulidae. 

 Genus Lingula, Brug. 

 1. Lingula tuinidula, Reeve, Conch. Icon. sp. 2. 

 Hab. Tsaulian j 7 fathoms, mud. 



