112 PROCEEDINGS OF TEE NATIONAL MUSEUM. vol.48. 



Distribution. — This species, which is known from the Atlantic, the 

 Indian Ocean, and the Pacific, seems to be scarce in most areas. A 

 more detailed account has been given in my Harvard paper. In 1912 

 Tattersall enumerated four stations in the Indian Ocean. 



45. STYLOCHEIRON ABBREVIATUM G. O. Sars (1883). 



1910. Stylocheiron abbreviatum H. J. Hansen, Siboga Exp., vol. 37, p. 122. 

 1912. Stylocheiron abbreviatum H. J. Hansen, Mem. Mus. Comp. Zool., vol. 35, 

 No. 4, p. 280, pi. 11, figs. 5a-5/. 



Occurrence. — Among the unnamed material only some few speci- 

 mens are at hand, all from the Pacific : 



Sur. 163. November 11, 1891. Lat. 30° 31' 30" N.; long. 140° 

 05' 30" W. 330-300 fathoms. Tanner net. 3 specimens. 



Sta. 3801. March 19, 1902. Lat. 28° 31' N.; long. 141° 47' W. 

 Hawaiian Islands. 120-100 fathoms. 3 specimens (among speci- 

 mens of S. carinatum). 



The specimen from Hyd. 2619, referred by Ortmann in 1894 to 

 S. abbreviatum, belongs in reality to the longicorne group, but it is 

 too mutilated for determination. The specimen from the Hawaiian 

 Islands mentioned by Ortmann in 1905 was correctly determined: 



Sta. 3803. March 21, 1902. Lat. 25° 39' 45" N.; long. 147° 41' 

 45" W. 50 fathoms. 1 specimen. 



Distribution. — S. abbreviatum is known from the. Atlantic, the Indian 

 Ocean, and the Pacific. A detailed account may be looked for in my 

 Harvard paper quoted, and in 1912 Tattersall added a locality in the 

 Indian Ocean. 



46.. STYLOCHEIRON MAXIMUM H. J. Hansen (1908). 



1908. Stylocheiron maximum H. J. Hansen, The Danish Ingolf Exp., vol. 3, 



Crust. Malacost., I, p. 92. 

 1910. Stylocheiron maximum H. J. Hansen, Siboga Exp., vol. 37, p. 121, pi. 16, 



figs. 6a-6d. 



Occurrence. — This species is at hand from a single station in the 

 northwest Atlantic and from two places in the tropical east Pacific: 



Sta. 2667. May 5, 1886. Lat. 30° 53' N.; long. 79° 42' 30" W. 

 1 specimen. 



Sta. 3414. April 8, 1891. Lat. 10° 14' N.; long. 96° 28' W. 

 200-0 fathoms. 1 specimen. 



Hyd. 2619. March 11, 1891. Lat. 7° 31' N.; long. 78° 42' 30" 

 W. 2 specimens. 



Distribution. — S. maximum is widely distributed in the Atlantic, 

 going northward to lat. 61° 49' N.; long. 14° 11' W. (Ingolf Exp.), 

 and southward to the subantarctic area as far as lat. 49° 56' S. (H.J. 

 Hansen, 1913). Besides, it is known from the Indian Archipelago 

 (Siboga Exp.) and the tropical east Pacific. 





