8i 



exclusive the terminal spinules, inner uropod hardly reaching the terminal spinule of the outer 

 border of the exopodite. 



Different from the species collected at Stat. 227 the eyestalks that are a little longer 

 than the eyes are wide, reach to near the far end of basal antennular article, while the pointed 

 stylocerite reaches as far as the eyestalks or even a little beyond them. The antennular peduncle 

 extends almost to the middle of the antennal scale, y^ joint a little longer than 2"'' as usual, 

 flagella incomplete. Antennal scale measuring three-fourths the length of the carapace and 

 4,3 — 4,7-times as long as wide; it is a little narrowed apically, the truncate tip is surpassed by 

 the terminal spine of the outer margin, except in the female with broken rostrum, in which 

 the terminal spine extends as far forward as the tip of the blade. Outer margin less deeply 

 concave on its proximal third than in the species from Stat. 227. Antennal flagellum of all the 

 specimens wanting. 



Of the external maxillipeds that reach about three-fourths of the way along the antennal 

 scale, the narrow lanceolate terminal joint is but one-fifth shorter than the penultimate. 



The peraeopods of the i^' pair, that are about as long as the carapace and the rostrum 

 taken together, reach in the larger females by the chela and one-fifth of the carpus beyond 

 the antennal scale, in the youngest female, long i 19 nmi., by one-third of the carpus. Ischium 

 armed with 4 movable spinules on its lower margin — in the specimen, long 119 mm., only 

 with 3 — • merus with one spinule in the middle, which in the largest specimen does not occur; 

 carpus a little more than one and a half as long as the merus, thickened apically, chela one- 

 fourth of the carpus, fingers one-third the length of the chela. 



As already remarked, the peraeopods of the 2""^ — ^^^ pair are only present in the female 

 long iig mm. Those of the 2"'' pair measure two-thirds the length of the body and extend by 

 the chela, carpus and one-fifth of the merus beyond the antennal scale. Ischium with a movable 

 spine near the distal extremity of the lower border, merus with 5 spinules, carpus unarmed, 

 one and a half as long as the merus, chela '/j, of the carpus, fingers about one-third the lengh 

 of the chela. 



The peraeopods of the 3"> pair are a little longer than the body and reach by the three 

 last joints and two-thirds of the merus beyond the antennal scale. Ischium with 2 spines near 

 the distal extremity, one on the inner, the other on the lower margin; merus with 7 spines on 

 the upper border, of which the foremost on the thickened extremity is somewhat longer than 

 the preceding, and with 6 on the lower, carpus unarmed, one-third longer than merus, the two 

 last joints together 7io of the carpus, dactylus half as long again as the propodus. 



Peraeopods of the 4'^ pair hardly longer than those of the 3^'' and reaching by the three 

 last joints and three-fifths of the merus beyond the antennal scale. Ischium with a movable 

 spine at the far end of the inner border, merus with 6 spines on the inner or upper border 

 and with 5 on the lower, the 6"' on the inner border at the thickened distal extremity being a 

 little larger than the rest; carpus unarmed, one-third longer than the merus, dactylus hardly 

 longer than the propodus, together '/n o[ the carpus. 



The leo-s of the 5'*^ pair are the longest of all and one-fourth longer than the body; 

 they reach by the three last joints and two-thirds of the merus beyond the antennal scale. 



SIBOGA-EXPEDITIE XX.\IXt('. " 



