2 I 7 



Coutière's description and figures. As wel! the rostrum as the two orbital spines bear a few 

 fine setae at their tips; the outer margin of the orbital spines appears usually not concave 

 mar the tips that usually are turnecl inwarcl; whereas the rostral point is generally slightly 

 turned upward, the orbital spines project horizontally forward. 



The measurements of the telson are for 6 specimens indicated in Table A, they are 

 somewhat variable: in the young specimen N° 5 the two pairs of spinules of the upper surface 

 are situated closer together, in the female N° 6 from Stat. 260, that has a small size, they 

 are farther distant from one another than in the other specimens. 



As results from Table B, the proportion between the length of the meri, carpi and 

 própodi of the 3 ld and 4 ,h legs appears also liable to variability. The four specimens N° 2 — 5 

 from Stat. 258 accord, with regard to these proportions, pretty well with those mentioned by 

 Coutière, though it ought to be remarked, that, after this author, the meri and propodi of 

 the 4 th legs should be of equal length, while in our specimens the propodi are usually a 

 little short er, sometimes, however, as in N° 3 and in a small, ova-bearing female from 

 Stat. 260, N° 6 of the Table, longer than the meri; different from the other specimens, the 

 propodus of the 3" 1 pair appears in this female N° 6 hardly shorter than the merus. As regards 

 the proportion between the length and the width of these joints, I wish to remark that in 

 fig. 2 6 of Coutière's work the propodus appears 7-times as long as broad, while, according 

 to the measurements indicated on Table C, the propodus of the 3 rd legs shows in the „Siboga" 

 specimens a somewhat stouter shape, the proportion varying between 5,1 and 5,88, except 

 in the small female from Stat. 260, in which the proportion is indicated by the number 6,6; 

 according to the enlargements of the figures in Coutière's paper, his specimens of Syn. Gravieri 

 seem to have been of a very small size, and the more slender shape of the propodus may 

 probably be explained by that difference of size. The merus of 3" 1 legs is sometimes furnished 

 with 5 spinules, in the two adult females N° 2 and X" 3 from Stat. 258 with 3, in younger 

 specimens with 2 and in the male X" 4 from this Station there were no spinules at all. The 

 meri of the 4 ,h legs carry one or two spinules. 



Accordine to Coutière the thickness of the dorsal hook of the dactvli should be onlv one- 

 sixth that of the principal hook ; though in our specimens the length of the dorsal hook measures 

 also usually one-third that of the other, the dorsal hook appears co mparati vely thicker, 

 for its thickness is usually one-third, rarely one-fourth that of the ventral hook. This difference, 

 however, is perhaps also owing to the larger size of the specimens collected by this expedition. 



In the original description the proportion between the length and the height of the small 

 chela is said to be 3,75. In the female X° 2 from Stat. 258 this proportion proved to be 3,72, 

 but in the female X" 3 from the same Station 3,44: in both specimens the fingers appear as 

 much shorter than the palm as in Fig. 2 a of Coutière's paper. First carpal segment of 2 nd legs 

 slender, 6 — 6,6-times as long as thick at its distal extremity and somewhat longer than the 

 following segments taken together: in the youngest specimens the first segment shows a somewhat 

 less slender form and it appears here not longer than the sum of the following. 



In some ova-bearing specimens, as e. g. in X° 3 from Stat. 258 and in the female from 

 Stat. 315 the eggs are of a yellow colour, rather numerous, 0,72 — 0,76111111. long and black 



85 



