12Ó 



The peraeopods of the 2' ul pair are equal and slender, those of the male reach by the 

 chela and four-fifths of the carpus beyond the antennal scale, those of the female by the chela 

 and the whole carpus • in the female the ischium extends to the middle of the terminal joint 

 of the antennal peduncle and this is also the case in the male; the carpus is in the male i i mm. 

 long and composed of 33 — 35 joints, that in the middle are longer than anteriorly and 

 posteriorly; the chela measures one-fifth of the carpus and the fingers are one-sixth shorter 

 than the palm, a little gaping and unarmed, while, according to Doflein, the dactylus should 

 be armed with a blunt tooth near the extremity. The 2 nd legs of the female resemble those 

 of the male, the fingers are hardly shorter than the palm. 



Following legs long, slender, gradually diminishing in length ; while in the male the legs 

 of the 3 rd pair reach by the dactylus, propodus, carpus and one-fifth of the merus beyond the 

 antennal scale, of the 5" 1 pair only the dactylus, propodus and two-thirds of the carpus project 

 beyond it. As results from the following Table, the carpi gradually diminish in length, 

 while the length of the propodi gradually increases from the 3 rd to the 5 th pair and the 

 dactyli become also shorter. While accordingly the carpus of the 3 rd pair is one 

 and a half as long as the propodus, in the 5" 1 pair these two joints show 

 nearly the sa me length. The long and slender dactyli are al most straight and 

 quite unarmed, without teeth or spines ; those of the 4 th pair measure just one-third of the 

 propodi, the dactyli of the 3 rd pair (Fig. 26a) are comparatively a little longer, while those 

 of the«5 th pair measure not yet one-fourth of the penultimate joint. Though these legs are long 

 and slender, even the 3 ld pair appears, however, still much shorter than the outer flagella of 

 the upper antennae, which, as already remarked, are as long as the body. Like in the allied 

 species the men of the three posterior legs are armed with small spines. 



Except on the last pair, the epipodites of all the legs are well-developed. According 

 to Dr. Balss this species attains a length of S5 mm. 



Table of Measu r e men ts in millimeters. 



N° 1 male from Stat. 15; N° 2 young specimen of Pies. Ortmanni Üofl., from Misaki, 

 Japan, determined by Dr. Balss and received from him; this specimen had the same size as 

 the two from Stat. 15. 



4. Plesionika Sindoi (Rathb.). PI. XI and XII, Fig. 27 — 27^. 



Pandalus sindoi M. J. Rathbun, in: U.S. Fish Commission Bulletin lor 1903, YVash. 1906, 



Part III, p. 91 S, PI. XXI, fig. 4. 

 ? Pandalus (Plesionika) ocellus A. Alcock, Descr. Catal. Indian Deep-Sea Crustacea, Calcutta, 



1901, p. 98. 



