38 



being as long or even slightly longer than the joint is wide, 2 or 3 spines are moreover double. 

 The dactyli (Fig. 9^), that resemble those of the genus Caridina H. M.-Edvv., are 0,9 mm. long, 

 almost half as long as the propodi and 4-times as long as wide at base; they are armed on their 

 posterior margin with 5 stout spines, including the terminal claw, that increase in length from 

 the i^' to the last. Carpus of 4''' pair 1,23 mm. long, propodus 2,1 mm., the latter a little 

 longer in proportion to the carpus than in the 3'''' j)air; there are 3 spines on the anterior 

 border of the carpus but only one on the posterior near the distal extremity. Propodus 7-times 

 as long as wide, with only 2 small spines on the pro.ximal half of the anterior margin, but 

 with 9 strong spines on the posterior margin, some of which are again double. The dactyli are 

 0,85 mm. long and fully resembly those of the 3'^<^ pair, 4 spines, increasing in length, being 

 implanted posterior to the terminal claw. Carpus of 5'^ pair 1,2 mm. long, propodus 2,32 mm. 

 long, almost twice as long as the carpus; there are 4 or 5 spines near the anterior border 

 of the carpus, one at the far end of the posterior margin, with a smaller spine behind it. 

 Propodus of a slenderer form than those of the 3"^'^ and 4''' pair, 9-times as long as wide; 

 there are 3 small .spines on the pro.ximal half of the anterior margin, while the posterior is 

 armed with i i articulating spines of somewhat unequal length, though generally becoming longer 

 distally, the longer of the two spines at the distal extremity measuring 0,38 mm., one and a 

 half as long as the propodus is wide. The dactylus (Fig. 9//) is 0,72 mm. long, about one-third 

 of the propodus, and almost 4-times as long as wide at base ; it is armed with 8 spines, including 

 the terminal claw; these spines are of a less stout shape than those of the dactyli of the 

 3'''' and 4"^ pair, but also increase in length from the proximal one to the terminal claw\ Like 

 the meri, also the carpi and the propodi of the three posterior legs are provided with a few 

 feathered setae. Ova not very numerous, comparatively large, 0,65 mm. long and 0,4 — 0,48 

 mm. wide. 



The two young specimens from the Stations 33 and 65(7 show nothing remarkable, 

 but the meri and carpi of the 1*' and 2°'^ pair of legs are still almost devoid of spines. 



General distribution: Ternate. 



2. Stylodactylns Sibogae de Man. PI. V", Fig. 10 — 10^. 



Stylodactylus Sibogae J. G. de Man, in: Zoologische Mededeelingcn, uitgegeven vanwege 's Rijks 

 Museum van Natuurlijke Historic te Leiden, 1918. Deel IV, afl. 3, p. 159. 



Stat. 95. June 26. 5°43'.5 N., ii9°4o'E. Sulu Sea. 522 m. Stony bottom, i female. 



A new species at first sight distinguished from the six other species of this genus by the 

 lower margin of the rostrum being smooth, not denticulate. The only specimen collected 

 measures 11,78 mm. from tip of rostrum to tip of telson; measured in the middle line the cara- 

 pace proves to be 2,16 mm. long, the rostrum 1,38 mm.^ the abdomen 8,24 mm.: it is probably 

 a young female. The rostrum (Fig. loa), that measures two-thirds the length of the carapace, 

 runs horizontally forwards to about the middle of the 2"*' joint of the antennular peduncle; the 

 upper border, slightly convex above the orbital margin, runs downward to the acuminate tip, while 

 the lower margin is slightly concave. In a lateral view the rostrum, not including the teeth, 



