igo 



on the middle of the cornea and with a small, black ocellus on the upper side of the stalk, 

 contiguous to the cornea. 



Basal joint of antennular peduncle considerably dilated laterally, the dilated part truncate 

 anteriorly with a forwardly directed spine at the outer angle, stylocerite flattened with the acute 

 tip curved inward and just reaching beyond the boundary between the i^' and 2"<^ article; 

 2°'' article slightly broader than long, 3"' a little smaller than 2°**. 



Second joint of antennal peduncle unarmed, the peduncle as long as the basal joint of 

 the peduncle of the upper antennae; scale a little longer than the latter, with the outer margin 

 straight and the terminal spine a little shorter than the rounded tip of the lamella. 



Antero-external angle of the antepenultimate joint (Fig. 48 <5) of the e.xternal ma.xillipeds 

 rounded; penultimate joint trapeziform, the inner and outer margins j)arallel, the inner shorter than 

 the outer; ultimate joint elliptical, twice as long as broad and distinctly longer than the penultimate. 



Peraeopods of the i*' pair equal, reaching by the chela beyond the antennal scale, carpus 

 nearly as long as the merus, chela a little shorter than the carpus, fingers a little shorter than 

 the palm. Peraeopods of the 2'"^ pair (I'ig. 48 r, 48^/) also ecjual, in the male larger and stronger 

 than in the female, and projecting by the chela beyond the antennal scale. JMerus of 2"'' pair, 

 in the male, nearly half as long as the carapace, rostrum included, 4-times as long as broad; 

 carpus a trifle shorter than merus, 3-times as long as thick distally; chela 2Y.,-times as long as 

 the carpus and a little longer than the carapace, rostrum included, palm three-fourths the 

 length of the chela, 4-times as long as broad and slightly becoming broader from the carpal 

 articulation to that of the dactylus; immobile finger with 2 teeth on the proximal half of the 

 cutting-edge, while the two teeth of the dactylus are placed close together on the middle of 

 the finger, the teeth of the immobile finger are a little larger than those of the dactylus and 

 on each finger the proximal tooth is distinctly larger than the following. In the adult female 

 the merus of the 2'"^ legs measures about two-fifths the length of the carapace, rostrum included, 

 and is, like in the male, 4-times as long as wide; carpus a trifle .shorter than the merus and 

 nearly 3-times as long as thick distally; chela a little shorter than the carapace, rostrum 

 included, 2Y.i-times as long as the carpus, palm 4-times as long as broad and measuring two- 

 thirds the length of the chela, fingers half as long as the palm, each with two teeth, placed 

 like in the male, but much smaller, rudimentary. Dactyli of the three posterior legs (Fig. 48^) 

 with a small, acute, accessory claw. 



Largest diameter of the ova, both in the full-grown (Stat. 181) and in the small-sized 

 (Stat. 91) female, long 0,52 mm. 



The two males bear a parasite on the under side of the abdomen. 



Length of carapace, rostrum included, of the male 4,5 mm., of the full-grown female 

 4,85 mm. 



Table of Measurements in millimeters. 



Length of telson . . 

 Width of telson at base 

 Width of tip of telson 



