External maxillipeds extending by two-fifths of their terminal joint beyond the carpocerite. 



The large chela resembles that of Syn. Iphino'i^ distal extremity of the palm with a 

 spine which is curved downward, upper margin of brachium ending in a small acute tooth. The 

 small chela agrees also with that of Syn. Iphino'd, as regards the length of the fingers but, 

 the height being much larger, the chela presents a much stouter shape. While 

 in Sy7i. Iphinoc the chela is more than 3-times and the palm almost twice as long as high, in 

 Syn. jedanensis the palm is only one and a half, the chela 2,61 — 2,73-times as long as high. 



First carpal segment of 2°'' legs of a stouter form than in Syn. Ipliinoe, the proportion 

 between length and thickness varying from 3,8 to 4,8; following segments taken together 

 slightly longer or but a trifle shorter than the first segment. « 



As regards the proportion between the length of the merus, the carpus and the propodus 

 of 3''^ and 4*^' legs, this species accords with Syn. Iphinoc, but all these joints show a stouter 

 shape, as is proved by the measurements. The merus of 3"^ legs is armed with five spinules 

 which are 0,06 — 0,16 mm. long, that of 4''^ legs with three or four. Dactyli nearly as in 

 Syn. Iphhio'd, but those of the 3''^ pair a little less broad or thick at base : so, in the 3'''^ legs, 

 the proportion between the length of the dactylus, i. e. the straight distance between its tip 

 and the proximal end of its anterior margin, and the width near the articulation varies from 

 2,45 to 2,5, whereas it is 2,1 — 2,21 in Syn. Iphinoc. These dactyli measure about one-fourth 

 the length of the propodus, the dorsal hook is almost half as long as the other, which is 3-times, 

 in one female even twice as thick as the dorsal hook. 



The dactyli of 4^'^ legs measure one-third the length of the propodus or somewhat less 

 and their thickness near the articulation is about ^7 their length ; the dorsal hook is almost 

 half as long as the ventral which is a little more than twice to three times as thick as the 

 dorsal hook. 



Eggs large, not numerous; those of a female long 15 mm., are 1,1 — 1,2 mm. long, 

 ochraceous, without eye-spots, those of another female of the same size are 1,5 mm. long, 

 greyish and black eye-spots are already observed. 



Table A. 



Proportion between length of telson and that of the posterior margin . 

 Proportion between the greatest width and that of the posterior margin . . 

 Proportion between the length of the telson and the distance of the anterior 



pair of spinules from the posterior margin 



Proportion between the distances of the two pairs of spinules from the 



posterior margin 



Table B. 



Length of the small chela 



Height of the palm 



Proportion length and height of this chela 



Length of the fingers 



Proportion between the length of the chela and that of the fingers. 



Proportion between length and height of the palm 



91 



