168 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



11. CORYPHAENOIDES NASUTUS Gunthcr. 



Coryphaenoidcs nasutus Gunther, Ann. Mag. Nat. Hist., ser. 4, vol. 20, 

 1877, p. 440. 



Macrurus nasutus Gunthee, Challenger Reports, vol. 22, Deep-sea Fishes, 

 p. 132, pi. 30, fig. B. 



Macrourus nasutus Jordan and Gilbert, Bull. U. S. Fish Comm., 1902 

 (1904), p. 616 (exclusive of the specimen from Izu, which is here re- 

 ferred to Lionurus proximus). — Franz, Abh. math.-phys. Id, k. Bayer. 

 Ali:acl. der Wissensch., vol. 4, Suppl. Bd. 1, 1910, p. 2G. — Jordan and 

 Thompson, Mem. Carnegie Mus., vol. 6, pt. 4, 1914, p. 306. 



Macrurus nasutus Dollo, Exped. Antarctique Beige, Res. du Voy. du S. Y. 

 Belgica, Poissons, 1904; pi. 8, figs. 1 and 3 (from Giinther's types; 

 to illustrate pseudocaudal ) . 



The smallest specimen (data lost) is l-iS mm. long. 



Seven or eight scales from origin of second dorsal to lateral line, 

 excluding the lateral line scale. The terminal rostral tubercle is 

 hemispheric in shape, Tvith about 12 radiating, strongly spinous 

 ridges; lateral tubercles oval, less convex, with about 10 strongly 

 spinous ridges, stronger above than below. The preopercular ridge 

 is strongly produced backward at its angle, more strongly than the 

 preopercular margin. 



The distance from the base of the outer ventral ray to the isthmus 

 is about 0.9 the distance from the ventral to the center of the anus, 

 a distance which is equal to the postorbital length of the head. 



Pyloric caeca shorter and fewer than in C. marginatus, but longer 

 and more numerous that in C. cinereus. They are shorter than the 

 orbit, and number, in five specimens counted, 8, 9, 10, 10, 10. 



Fins proximally overlaid with a bluish gTay pigment. Under side 

 of head and trunk underlaid with silvery pigment which is scarcely 

 apparent where the scales remain. 



The specimens dredged in comparatively shallow water, off the 

 south coast of Hokkaido, greatly extend the northern limit of the 

 known distribution of C. nasutus. It is of further interest to note 

 that these specimens were dredged with Nenudonurus yectoralis^ 

 which has Bering Sea for its center of distribution. 



