X, D, 2 Cowles: Synonyms for Atya molluccensis de Haan 149 



one in the usual position but smaller than that of No. 2 and a 

 slender slightly movable one anterior to it. This slender spine 

 seems to correspond to the one Milne Edwards described for the 

 type of Atya armata. The merus of the right fourth leg 

 bears 3 movable spines, the most posterior of which is situated 

 at about the middle of the length of the merus. The merus 

 of the right fifth leg has 2 movable spines. Similar conditions 

 are found in the left legs, except that the merus of the fifth leg 

 bears 3 movable spines (fig. 1, g, h, i, j). 



Specimen 4 (museum No. 1371) is 56 millimeters long, and I 



n 



Fig. 1. Atya molluccensis de Haan. a, h, c, specimen 1, meri of the right 

 third, fourth, and fifth legs, respectively ; d, e, /, specimen 2, meri of the 

 right third, fourth, and fifth legs, respectively ; g, h, i, specimen 3, meri of 

 the right third, fourth, and fifth legs, respectively ; j, specimen 3, merus 

 of the left fifth leg ; k, I, m, specimen 4, meri of the right third, fourth, and 

 fifth legs, respectively ; rs, o, p. specimen 5, meri of the right third, 

 fourth, and fifth legs, respectively. 



consider it to be less mature than any of the specimens already 

 mentioned. It has 6 teeth on the lower border of the rostrum. 

 The merus of the right third leg has 2 sharp movable spines (the 

 most distal one is only slightly movable) and a swelling between 

 the two, the latter indicating the beginning of the heavy spine 

 of older specimens. The merus of the right fourth leg has 4 

 slender movable spines, and the merus of the fifth legs bears 

 3 movable spines. The conditions are similar for the left legs 

 (fig. 1, k, I, m). 



Specimen 5 (museum No. 1371) has 6 teeth on the lower border 

 of the rostrum and is 42 millimeters long. There are 2 movable 

 spines on the merus of the right third leg, 4 movable spines on 



