I. '08. 55 



S.R. J:49.— 19/5/'07.— 50^ 28' N., 11° 39' W. Soundings 950 fathoms. 



Midwater trawl, 0-800 fathoms — One, 44 mm. 

 S.R. 470— 24/8 /'07.— 50° 16' N., 11° 27' W. Soundings 770 fathoms. 



Midwater trawl, 0-500 fathoms. Temperature at 500 



fathoms 9 03° C, saUnity 35-35°/oo— One, 19 mm. 

 S.R.477.— 28/8/'07.— 51° 15' N., 11° 47' W. 707-710 fathoms. 



Trawl. Temperature at 700 fathoms, 7.19° C— One, 15 -5 



mm. 

 S.R.481.— 29/8/'07.— 50° 59' N., 11° 52' W. Soundings 920-1,064 



fathoms. Midwater trawl, 0-900 fathoms — Two, one 16-5 



mm., one broken. 

 S.R.484.— 30/8/'07.— 51° 35' N., 11° 57' W. 602-610 fathoms. 



Trawl. Temperature at 550 fathoms, 8-34° C, salinity 



35-32%^— Two, 14-5 and 47 mm. 

 S.R.500.— ll/9/'07.— 50° 52' N., 11° 26' W. 625-666 fathoms. 



Trawl. Temperature at 600 fathoms, 8-22° C, salinity 



35-41%^— One, 24 mm. 



Yertical range. — Off the east coast of N. America P. sulcati- 

 frons has been taken in soundings varying from 515 to 2,949 

 fathoms (Smith), but whether the specimens were actually 

 living at the latter depth is very doubtful. The species is 

 frequently taken in midwater ; there is no certain record of its 

 capture on the bottom, although it has on many occasions been 

 caught in beam and Agassiz trawls. On one occasion (Smith, 

 1886, St. 2,223) the species has been recorded from the sur- 

 face in soundings of 2,516 fathoms.; Smith suggests that the 

 specimen may have been wrongly labelled, but the occasional 

 occurrence of other deep-sea forms at or near the surface 

 renders this hypothesis open to doubt. 



Family HOPLOPHORIDAE. 



Of this family three genera, comprising four species, are 

 now known from the deep water off the west coast of Ireland. 



I. Endopod of first maxillipede composed of 

 three segments ; the two inner distal 

 lobes (basipodite) of the second maxilla 

 narrow and projecting beyond the basal 

 lobe. 



A. Merus and ischium of pereiopods normal, 



not broad or strongly compressed ; ros- 

 trum rarely very short, and always 

 armed with teeth or serrations, Acanthephyra, 



(p. 56), 



B. Merus and ischium of pereiopods very 



broad, strongly compressed and laminar ; 

 rostrum very short and quite unarmed, 



Ephyrina (p. 68). 



