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 carinoe present an eroded sui'face, 

 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 tliird, and third and fourth carina?. 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 considei'- 

 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 ti'ansverse furrow. The first abdominal segment also bears a 

 pair of strong, forward-pointing, lateral teeth on its anterior border. Terga 

 and pleural of all the abdominal segments tuberculose. Pleura? of first seg- 

 ment curved forward and terminated by a blunt tooth ; margin of second pair 

 of pleura? three-toothed, the middle tooth by fiir the most prominent, the 

 posterior tooth obsolescent ; pleura? 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 carina? 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 tliird, 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. 

 " 3410. 331 " 1 juv. 



