solitary tooth and the orbital margin 25 mm. : the preserved part is, however, only 22,5 mm. 

 long, we may therefore conclude that the tooth has stood on that part which is broken off. 

 The obtuse rostral carina gradually rises just before the middle of the carapace, but the i st 

 tooth stands at the anterior ninth of the latter; this tooth is the smallest of all, the 2 nd and 

 the 3 rd , j:hat is placed above the orbital margin, gradually increase in size, but the three 

 remaining teeth, on the rostrum proper, have the same size as the 3" 1 ; these teeth are, however, 

 much farther distant from one another than the three proximal and stand at equal distances, 

 two above the eyes, the 3 ld at the level of the distal extremity of the 2 nd antennular article ; 

 the rest of the upper margin is smooth. At first the rostrum curves downward to the level of 

 the distal extremity of the antennular peduncle; from here it runs straight and obliquely upward 

 to above the level of the upper border of the carapace. The lower margin bears in this specimen 

 15 teeth, of which the i st is placed opposite the middle of the 3 rd antennular article, just in 

 front of the anterior tooth of the upper margin ; the first 8 or 9 teeth stand rather closely 

 together, but the distances between the following gradually increase in length. According to 

 Bate the lower margin should be furnished with 6 or 7 teeth, but in the figure 4 it bears 

 distinctly 10 teeth: the larger number of teeth on the lower margin shall therefore probably 

 prove to be of 110 importance. Antennal spine rather long, reaching beyond the 2 nd joint of 

 the antennal peduncle, branchiostegal spine very small, minute. In this specimen the 6 th somite 

 is just twice as long as the 5*; the telson is but little, viz. 1 / s , longer than the 6 th somite; it 

 is armed with 3 pairs of dorso-lateral spinules besides those at the tip and is as long as the 

 inner uropod, when the longer terminal spines, that are of moderate length, are included, but 

 distinctly shorter than the exopodite of the tail-fan. 



In the specimen from Stat. 253 the carapace is 11,25 mm. long, while the preserved 

 part of the rostrum measures only 14 mm. The proximal teeth of the dorsal border agree 

 with those of the preceding specimen, but there are 7 teeth instead of 6, the anterior tooth 

 standing just beyond the tip of the antennular peduncle; 13 teeth occur on the lower margin. 

 The carapace of the female from Stat. 65^ is almost 12 mm. long. 



Eyes large, reniform, being in the adult female from Stat. 12 4,2 mm. broad and 3,4 mm. 

 long; ocellus large, elliptical, only in contact with the cornea at its distal extremity. Bate 

 describes the first joint of the antennular peduncle as short, it is, however, on the contrary 

 rather long, appearing, when measured from the orbital margin, more than twice as long as 

 the 2 nd and 3 rd , that are subequal, combined; the peduncle extends a little beyond the middle 

 of the antennal scale, stylocerite as long as i st article. 



Spine at the outer distal angle of 2 nd joint of antennal peduncle small, reaching as far 

 forward as the antennal spine of the carapace. Scaphocerite in the adult female from Stat. 1 2 

 10,75 mm - l° n S'i i- e - V'j ^ le l en &th °f the carapace; it has a narrow shape, is about 4-times 

 as long as wide and tapers distinctly towards the tip; outer margin slightly concave, terminal 

 spine hardly reaching beyond the tip of the lamella. Antennal peduncle a little shorter than i st 

 joint of antennular peduncle. 



The external maxillipeds reach by half their terminal joint beyond the antennal scale ; 

 exopodite well developed, half as long as the antepenultimate joint. 



