228 



beyond the tip of the antennal scale, in the female (Fig. 57, 57 tf, 57^) only with one-third or 

 one-fourth. The proximal two-thirds are horizontal, the distal third curved upward; it is armed on 

 each side with 2 spines, the anterior reaching just beyond the eye, more pointed and a little 

 larger than the posterior, which is situated at the level of the orbital margin; the median 

 ridge, which on the distal upturned part is elevated above the lateral margins, appears on the 

 rest of the rostrum as a delicate thread-like line, traceable almost as far as the transverse groove 

 at the base, and on each side of it the rostrum is not corrug-ated. The lower border is grooved,. 

 the groove widens on the distal upturned part and is furnished here with a median ridge. 



Orbital spine directed a little ontward, like in Glyph. Gilesii, and a little larger than 

 the branchiostegal spine, which is almost entirely concealed by the former, when the carapace 

 is looked at from above. The dorsal crests run parallel, the anterior portion of either crest in 

 front of the cervical groove is divided into 6 or 7 low, obtuse and contiguous tubercles that 

 are longer than thick; just inside the anterior tubercle is placed a very small, subacute tooth 

 and a similar small tooth exists, just in front of these two small denticles, in the middle line, 

 immediately behind the basal groove of the rostrum; the posterior portion of the dorsal carinae 

 is formed by 3, rarely 4 or 5, tubercles similar to those of the anterior part. Between the two- 

 dorsal crests the surface is smooth. The anterior portion of the 2 nd or subdorsal crest is broken 

 into 4 tubercles, of which the subacute i st or anterior, separated from the 2 nd by a deeper and 

 longer notch than the others and situated at the posterior extremity of the lateral margins of 

 the rostrum, should in my opinion more rightly be considered as a third rostral tooth. This tooth,. 

 a little larger than the posterior rostral tooth, is also somewhat larger than the three other 

 teeth, that resemble those of the dorsal carinae; the two anterior are subequal and a little. 

 longer than the posterior one. The posterior portion of the subdorsal carinae is formed by 3, 

 4 or 5 low, obtuse and contiguous tubercles that resemble those of the dorsal crests ; they are 

 of unequal length. Between the dorsal and subdorsal carinae one observes both on the gastric 

 and the cardiac region a few small, obtuse granules, so e. g. in the ova-bearing female 4 on 

 the gastric, 4 on the cardiac region ; the position of these granules is much variable. The 

 posterior moiety of the 3 rd or dorso-lateral crest is smooth and does not end anteriorly in a 

 tooth, in the ova-bearing and in a younger female, however, there is a tracé of a notch a 

 little behind the middle; in front of the anterior extremity there is still a row of 2 or 3 small 

 subacute or obtuse tubercles, placed obliquely on the upper border of the groove, that separates- 

 the hepatic from the gastric area. This species now belongs to those in which 

 the anterior portion of the 3" 1 crest is developed. This anterior portion ends- 

 anteriorly, like in Glyph. Gilesii, in a small sharp tooth or spine lyihg immediately behind the 

 pre-eminently large, orbital spine, but, while in Glyph. Gilesii the crest runs backward to the 

 cervical groove (Illustr. Zool. Investigator, PI. VII, fig. 4), in Glyph. assimilis it is less com- 

 pletely developed. In the younger male, long 53 or 54 mm., the crest reaches from the anterior 

 extremity backward to midway between it and the cervical groove, then follows immediately a 

 small granule and a little more backward another; in the larger male the crest measures but 

 one-third the distance between the anterior extremity and the cervical groove, it is foliowed 

 immediately by a very small granule and near the cervical groove by a somewhat larger, sharp 



