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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 57. 



This little species occupies a position in relation to the other brach- 

 iopods in the Japanese fauna analogous to that of Gryphus minor 

 Philippi {G. affinis Calcara) in the Mediterranean fauna, but there 

 seems to be no basis, except a general superficial similarity, for re- 

 garding them as identical. 



GRYPHUS TRANSLUCIDUS, new species. 



Shell small, white, smooth, polished, sub transparent, rounded 

 triangular, moderately inflated; pedicel valve with a short beak, 

 entire foramen, the deltidial plates narrow, coalescent, with a median 

 suture; hinge teeth weak, close together; brachial valve less convex, 

 the loop short, small, the anterior edge taken with the edges of the 

 very short crura, describing two thirds of a circle, with no median 

 ridge, sulcus or projecting point; crural plates separated to the apex 

 with no trace of a cardinal process; two sliort shallow grooves in the 

 valve below the loop separate the muscular impressions. Height 

 7.0, width 5.5, diameter 4.0 mm. 



Type locality. — U. S. Bureau of Fisheries stations 5153, Tawitawi 

 Islands, in 49 fathoms, sand, and 5236, off Nagubat Island, East 

 Mindanao, PhiUppines, in 494 fathoms, sand, bottom temperature 

 41.2° F. 



This little species resembles no other yet described recent form 

 and there is no indication that it reaches much greater dimensions 

 than those given above. Notwithstanding the number of specimens 

 none retained the brachia. No. 292931 alone had the space below tlie 



