and carries, on the right leg, a spine in the middle; a claw-like spine, directed inward, occurs 

 at the distal end of the merus. A straight, slender spine, directed forward, is observed near 

 the far end of the upper border of the carpus and another much smaller one exists at the distal 

 end of the lower. The chela is a little longer than the merus and, except in the youngest 

 specimens, twice as long as the carpus. The upper border of the palm bears six [or seven 

 spines along its whole length, while one observes in Stereom. phosphorus only one claw-like 

 spine at the far end ; the lower border of the palm is finely spinulose along its distal half 

 The fingers of the adult female are one-fourth longer than the palm, in the other younger 

 specimens one and a half times as long. 



The following legs resemble also those of Stereom. phosphorus. The 2"'^ legs measure, 

 in the adult female, a little more than one-third the length of the i*' pair, the following diminish 

 gradually in length. The coxae of the 2"'' and 3''! pair are armed with a strong spine 

 near the outer angle of their anterior border that articulates with the ischium. The merus of 

 the 2"'' legs presents a small spine at the far end of its upper border and a slender, straight 

 spine at the far end of the carpus. The following legs are unarmed, except the spine on the 

 coxa of the 3'''^ pair. The 5'*^ legs are, in this adult female, cheliform. 



Eggs ochre-yellow, very numerous, globular, small, their diameter measuring 0.8 mm. 

 Genital apertures conspicuous. 



The largest male, collected at Stat. 316, is 93 mm. long. The two rostral spines are 

 coalesced for three fourth parts of their length. The armature of the lateral margins of the 

 carapace is for the left side "i , for the rio;ht '■; the anterior division on the right side is armed 

 abnormally with 6 or, properly .speaking, with 7 spines, because the fifth is double. The .sub- 

 lateral ridge on the branchial regions consists of 1 2 spinules, which are smaller than those of 

 the lateral margin, but I must remark that a 13"' spinule occurs, on the inner side of the 

 ridge, between the antepenultimate and the penultimate, both on the right and on the left 

 branchial region. The acute tooth on the frontal border of the eye-stalk is directed outward 

 and situated a little farther distant from the inner than from the outer angle. The large median 

 spine of the 3''' abdominal terguni is cS mm. long, measured from the posterior margin of the 

 somite, and almost twice as long as the 2"'' that measures 4.5 mm. 



The merus of the left leg of the 1*' pair carries two spines near one another, just behind 

 the middle of its upper border and one opposite them on the lower, besides the minute spinules 

 with which the latter is armed ; that of the right leg presents one spine above and two smaller 

 ones below, and in both meri one observes the usual spine at the distal end of the upper 

 border. The coxae of the 2'«* legs are armed with two spines on their anterior border, a larger 

 one in the middle and a smaller more inward. 



The largest female from Stat. 314 is 81,5 mm. long, the carapace being 35,5 mm. long, 

 the abdomen 46 mm. The rostral spines are separated for more than half their length. The 

 armature of the lateral borders of the carapace is typical, on both sides, the anterior division 

 presenting 5, the middle one 3, the posterior 9 spines; of the teeth of the sublateral ridges 

 on the branchial regions the 6 or 7 anterior ones are rudimentary, which is, of course, an 

 abnormality. The merus of the left leg of the r' pair carries one tooth, that of the right two 



