GLYPHOCRANGON LORICATA. 141 
vertically compressed spine, which reaches forward to the level of the middle 
of the eye, and is directed outward at an angle of about forty-five degrees 
with the axis of the body. Behind this hepatic spine, the margin of the 
fourth carina is entire. The fifth and sixth carine present an eroded surface, 
but are not toothed. The branchial regions are adorned with three longi- 
tudinal rows of not very distinct tubercles between the first and second, sec- 
ond and third, and third and fourth carine. The hepatic area also bears 
about ten very small and inconspicuous tubercles. The external orbital spines 
are directed nearly straight forward, but are inclined upward at a consider- 
able angle when viewed from the side; they reach a little beyond the hepa- 
tic spines, but not so far as the branchiostegal spines. The latter attain to 
the anterior end of the eye; they form but a very slight angle with the axis 
of the body, whether they are viewed from below or from the side. 
Along the median dorsal line of the abdomen there runs a carina from 
the anterior end to the base of the telson, where it ends in a single promi- 
nent tooth. On the first abdominal segment, this carina is produced forward, 
in the shape of a stout tooth, over the anterior border of the segment; on 
the second, third, fourth, fifth, and sixth segments, this carina is divided into 
two parts by a transverse furrow. The first abdominal segment also bears a 
pair of strong, forward-pointing, lateral teeth on its anterior border. Terga 
and pleure of all the abdominal segments tuberculose. Pleur of first seg- 
ment curved forward and terminated bya blunt tooth ; margin of second pair 
of pleure three-toothed, the middle tooth by far the most prominent, the 
posterior tooth obsolescent ; pleure of third, fourth, and fifth segments two- 
toothed, — of sixth segment one-toothed. Telson longer than the posterior 
pair of appendages, armed at the proximal end, as aforesaid, with a single, 
prominent, median tooth; the lateral carinze of the telson are also furnished 
with teeth (about eight in number on each side) on the anterior two-thirds ; 
there is, moreover, a longitudinal row of six or seven smaller teeth at a lower 
level, on each side of the anterior third of the telson. 
The dactyli of the third, fourth, and fifth pairs of thoracic appendages are 
of the usual form, — lanceolate, with very acute tips. 
Length, 82 mm.; carapace, 35 mm.; rostrum, 16 mm. ; telson, 15 mm. ; 
extent between tips of hepatic spines, 24 mm.; extent behind cervical 
groove, 16 mm. 
Station 3402. 421 fathoms. 1 male, 3 juv. 
ee S410. sols 1 juv. 
