I. '08. 75 



S.R. 352— 5/8 /'06.— 50° 22' N., 11° 40' W. Soundings 800 



fathoms. Midwater trawl, 0-750 fathoms — Four, 11-17 



mm. 

 S.R. 363— 10/8 /'06.— 51° 22' N., 12° 0' W. 695-720 fathoms. 



Trawl. Temperature at 600 fathoms, 7 92° C, salinity 



35-37° /o^— One, 12 mm. 



Vertical range. — Hymenodora glacialis has been found in 

 soundings of 137 fathoms (Ohlin) and 2,949 fathoms (Smith). 

 Although as a general rule the species is certainly bathy- 

 pelagic, it has on one occasion been found at the surface 

 (Buchholz). There is no proof that it ever lives actually on 

 the bottom. 



Although it has not as yet been determined with any cer- 

 tainty, it is probable that this species occurs in temperatures 

 below freezing point. 



Family NEMATOCARCINIDAE. 



Genus Nematocarcinus, A. Milne-Edwards. 



Nematocarcinus, A. Milne-Edwards, 1881. 

 Eumiersia, Smith, 1882. 

 Nematocarcinus, Spence Bate, 1888. 

 Stochasmus, Spence Bate, 1888. 

 Nematocarcinus, Alcock, 1901. 



Nematocarcinus ensifer (Smith). 



Eumiersia ensifer a, Smith, PI. xiii, figs. 1-9. 

 Nematocarcinus ensiferus, Smith, 1884, PL vii, fig. 1. 

 Nematocarcinus tenuipes, Spence Bate, 1888, PI. 



cxxxii, fig. 6. 

 Nematocarcinus ensifer, Faxon, 1895. 

 Nematocarcinus ensiferus, Adensamer, 1898. 

 Nematocarcinus tenuipes, Alcock, 1901. 

 Nematocarcinus e7isiferus ,^eiindb, 1903. 

 Nematocarcinus ensiferus, Eathbun, 1906. 



N. ensifer, var. exilis, Spence Bate. 



PI. IX, figs. 1-10. 



Stochasmus exilis, Spence Bate, 1888, PL cxxxii, fig. 



14. 

 Nematocarcinus exilis. Caiman, 1896. 

 Nematocarcinus exilis, Hansen, 1908. 



The rostrum is straight or slightly ascendant from the dorsal 

 line of th^e carapace and is from one-third to three-fifths its 

 length. It is strengthened by a strong ridge on either side 

 and is armed dorsally with from twenty-three to thirty-one 



