■ CRUSTACEA — WHITKLEGGE. 213 



as the ischium and equal to the nierus in lenj^th and bieadtli, witli 

 a few small denticles on the anterior border. Merus as long as 

 the carpus, inferior border of the former with aljout six strong 

 branched setie, and that of the latter armed with four or five 

 short mobile spines. Propodus longer and narrower tiian the 

 carpus, et(ual to the dactylus ; the inferior border carries six 

 mobile spines, which slightly increase in size distally. 



Dactylus slender, tapering, with a horny claw occupying the 

 distal fourth and preceded by an imperfect joint. 



Third to seventh pairs of legs, and also each sixth and seventh 

 joint, gradually diminishing in size as the posterior end of the 

 peraeon is approached. 



Third pair of legs having the basos joint stout and nearly equal 

 in length to the three following joints combined ; merus and 

 carpus equal, shorter than the propodus ; the 

 latter is narrow, subcylindric and not equal 

 in length to the slender but little curved 

 dactylus. 



In the remaining pairs of legs the basos is 

 less than twice as long as broad and equal to 

 or exceeding the combined length of the three 

 succeeding joints. The propodal joint is about 

 as long as the ischium and one-third shorter 

 than the dactylus. There are some branched 

 setse on the anterior borders of the second 

 joints, and a rather wide band of rasp-like 

 spines on the inferior surfaces of the fourth, 

 fifth, and sixth; the latter bears a short, thir^Leg of Male. 

 simple, spine-like seta on the superior distal 

 extremity, and a curved pectinated spine infeinorly. 



The pleopods are subject to great variation ; there are never 

 more than three pairs, often only one, and frequently they are 

 wholly absent, especially in the female ; they are very small and 

 consist of a short pedicle and two narrow equal setse tipped rami. 



Uropods about equal in length to the telson ; outer ramus with 

 one joint, twice as long as broad, and surmounted apically by 

 three sette; inner ramus three-jointed, the first a little longer than 

 broad, the second and third subequal and about twice as long as 

 broad] the middle joint bears two, and the terminal one three 

 simple stoutish setse. 



The male differs from the female in having the joints of the 

 larger flagellum of the first antennae longer, the chelipedes slightly 

 larger, particularly the right. The rasp-like teeth are better 

 developed, more especially on the terminal joints of the posterior 



