PHYLLOPOD CRUSTACEA OF JAP AX. H 



nearly to the sixth joints of the flagelhim of the second ; sense papilla very 

 distinct and well formed. The second antennae (fig. 3) rather small, the 

 upper flagellum with seventeen, and the lower flagellum with eighteen joints, 

 the upper side of al the joints with three to four strong setse. Twenty -four 

 pairs of appendages. The first two pairs of legs (see fig. 4} similarly formed, 

 the gill of the second being only a Kttle larger. The first endite with two 

 strong spines on the tix3, one of which being provided with five or six strong 

 teeth ; the second nearly twice as large as the third. The palm of the hand 

 higher than broad, the fourth endite broad with numerous blunt spines, the 

 papilliform appendage much broader than in that of the second pair of 

 appendage and provided also with more spines. Two feathered setae arise from 

 the fourth endite not far from the base of the papilliform appendage. The 

 fifth endite is also a little broader than that of the second pair of appendages, 

 and is bent like an elbow on its outer posterior side. The free end of this 

 endite is provided also with greater number of blunt spines compared with that 

 of the succeeding pair of appendages. The terminal portion of the sixth endite 

 is not pointed, but cut abruptly. The third pair of appendages (fig. 7) has 

 its sixth endite rather small, while the finger-shaped terminal projection 

 (fig. 7 P) of the fifth endite is very large, projecting far beyond the sixth. The 

 tix3 of this projection is beset with numerous (about 30) sensory setae. This 

 projection becomes gradually smaller in the succeeding pairs of 

 appendages till to the twelfth where it completely disappears. Of all the 

 endites, the first only remains till to the last appendages (fig. 9), while 

 all the rest gradually disappears, and the flagellum is only represented 

 by a small i^rojection with two setae, one of which is two 

 jointed. The branchiae the twenty-fourth appendage is also seen as a 

 shght projection at the base of the flabellum. The post-abdomen (fig. II) 

 with about thirty pairs of coarse teeth of unequal length on the upper side, 

 the first being the largest. All the teeth as well as the terminal spine finely 

 serrated. The first spine is curved backward and is serrated on its posterior 

 concave side, while the surration of the terminal spine is on the upper con- 

 cave side. The caudal appendage nearly three times as long as the terminal 

 spine, provided with about six feathered setae an the upper inner side of its 



