110 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



The following specimens from the tropical East Pacific referred 

 by Ortmann in 1894 to N. microps belong to N. tenella: 



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

 200-0 fathoms. 1 specimen. 



Hyd. 2627. March 25, 1891. Lat. 0° 36' K; long. 82° 45' W. 

 1770-0 fathoms. 1 specimen. 



Distribution. — The very wide distribution in the Atlantic, the 

 Indian Ocean, and the Pacific has been dealt with in the Harvard 

 paper; in 1912 Tattersall enumerated many localities in the 

 Indian Ocean. 



Genus NEMATOBRACHION Caiman. 



Only one of the three species known is represented in the collection. 



41. NEMATOBRACHION FLEXTPES Ortmann (1893). 



1912. Nemutobrachion flexipes H. J. Hansen, Mem. Mus. Comp. Zool., vol. 35, 

 No. 4, p. 269, pi. 10, figs. 5a-5m. 



Occurrence. — Only the specimens from the tropical East Pacific 

 referred correctly by Ortmann in 1894 to his Stylocheiron jlexipes are 

 found in the collection. 



Sta. 3382. March 7, 1891. Lat. 6° 21' N.; long. 80° 41' W. 200 

 fathoms. Closed part of the Tanner net. 3 specimens. 



Hyd. 2627. March 25, 1891. Lat. 0° 36' N.; long. 82° 45' W. 

 1770-0 fathoms. 1 specimen. 



Distribution. — N. Jlexipes is known from the Atlantic and the East 

 Pacific; more details on this topic have been given in my paper quoted. 



Genus STYLOCHEIRON G. O. Sars. 



Nine species are known, and five are represented in the collection. 



42. STYLOCHEIRON CARINATUM G. O. Sars (1883). 



1885. Stylocheiron carinatum G. O. Sars, Challenger Rep., vol. 13, p. 137, pi. 26. 

 1910. Stylocheiron carinatum H. J. Hansen, Siboga Exp., vol. 37, p. 113, pi. 16, 

 figs, la-lh. 



Occurrence. — Among the unnamed material specimens are at hand 

 from seven stations, four of which are in the northwest Atlantic and 

 three in the North Pacific: 



A. Atlantic Stations. 



Sta. 2091. September 21, 1883. Lat. 40° 01' 50" N.; long 70° 59' 

 W. 1 specimen. 



Sta. 1029. September 14, 1881. Lat. 39° 57' 06" N. ; long. 69° 10' 

 W. 1 specimen. 



Sta. 2174. July 21, 1884. Lat. 38° 15' N.; long. 72° 03' W. 

 Surface. Surf. temp. 76°. 1 specimen. 



Sta. 2224. September 18, 1884. Lat. 36° 16' 30" N.; long. 68° 

 21/ W. 2 specimens. 



