EEOM THE INLAND SEA OF JAPAN. 417 



side ; it is placed rather far below the other, for their tips are twice as far from one 

 another as the hepatic spine from the frontal border of the carapace. 



The telson, once and a half as lonsj as the sixth se!?ment and almost three times as Ions,' 

 as broad at its base, ends in an acute tooth ; the inner of the two spines on eitlier side 

 exceeds, as usual, the tip of the telson. Of the two pairs of spinules on the upper surface, 

 the anterior stand a little behind the middle ; the four spinules are, in the larger specimen, 

 arranged in a quadrant, but in the others the posterior pair are situated a little closer to 

 the anterior than the spinules of the anterior pair are distant from one another. 



The eye-peduncles are small and reach barely beyond the middle of the first joint of 

 the peduncle of the inner antennae. The two outer flagella are united for a short 

 distance, which is barely as long as the last joint of the peduncle. 



The external maxillipeds reach as far forward as the peduncles of the inner antennae. 



The legs of the first pair extend, in the largest individual, with the distal fifth of 

 their carpus beyond the tiji of the antennal scales, but in the following somewhat smaller 

 specimen by one-third of the carpus ; those of the third specimen are lost. The carpus 

 is as long as the merus and one-tJiird longer them the chela, their proportion being as 

 4:3; the fingers are nearly as long as the palm. 



Unfortunately only in the largest specimen one leg of the second pair is present, in 

 the two others both are wanting. The remaining leg (PI. 33. fig. 68) is the left and, as 

 I conclude from the size of the coxte, apparently the smaller. This leg is 48 mm. long, 

 twice as long as the carapace, the rostrum Included, but a little shorter than the whole 

 body ; one-fourth of the carpus extends beyond the antennal scales. The merus, 

 8*5 mm. long, when measured along its upper border, is cylindrical, but it is somewhat 

 thickened distally ; it is here 3'4 mm. thick, at the proximal end, however, 2 mm. ; 

 this joint reaches as far forward as the peduncles of the inner antennse. The 

 carpus, 6'5 mm. long, is distincthj shorter than the merus ; it regularly thickens 

 a little towards the distal end and, though generally cylindrical, appears very slightly 

 compressed, as this joint is 3'6 mm. broad at the distal end of its upper surface, but 

 3'25 mm. at that of its lateral side. The chela is 22 mm. long, three times as long as the 

 carpus, the palm is 10*25 mm. long, appearing very slightly shorter than the fingers. 

 The upper surface of the palm is 3"7 mm. broad at the articulation of the fingers, 

 3-6 mm. in the middle, and still a little less broad at the proximal extremity, being 

 therefore harely broader than the carpus ; in a lateral view, however, pahn and fingers 

 appear to narrow regularly from the carpal articulation to the tips of the fingers, the 

 palm being 3 mm. thick proximally and 23 mm. at the articulation of the dactylus. 

 The palm appears therefore also slightly compressed in the proj^oition of 3 : l. Viewed 

 from above, the fingers do not appear to narrow towards their tips, which are strongly 

 curved inward ; they shut close togethtn*. The fingers are somewhat tomentose; the fixed 

 finger carries a very small, conical tooth at the end of the cutting-edge, /. e., at al)out 

 one-third of its length from the artieidation, and between tliis tooth and the articulation 

 an elongate low prominence is ol)served wliich carries two or three sniall obtuse teeth. 

 The cutting-edge of the dactylus terminates also in a small, conical tooth just behind tlu^ 

 middle, and midway between this tooth and the articulation is a sliglitly larger, some- 



