CEUSTACBA OP THE MEEGTJI AECHIPELA.aO. 245 



armed witli a row of small black spinules. The outer and inner 

 surfaces of these legs are smootli. The legs of tlie fourth pair 

 are chelate and clothed with long yellow hairs along their upper 

 and under margins. The more slender fifth legs are also very 

 hairy. 



This species is beautifully coloured. The cephalothorax and 

 the postabdomen are of a uniform yellowish colour, and are never 

 marked with red longitudinal lines. Each eye-peduncle is marked 

 with three red longitudinal lines, one on its upper, one at its 

 external, and one at its internal side. The antennulary and an- 

 tennal peduncles are also marked with one or two red lines. The 

 legs are of a white or pale yellowish colour, and marked with 

 many longitudinal lines of dark red. The upper margins of the 

 arms and of the wrists of the anterior legs are bordered on each 

 side by a red line ; these two red lines are continued along the 

 inner margins of the upper surfaces of the hands. The outer 

 and inner surfaces of the anterior legs are marked, moreover, 

 with one or two often interrupted, red lines, which in very large 

 individuals are rarely distinct. In order to give a good idea of 

 the coloration of the legs of the second and third pair, 1 will first 

 describe the coloration of the dactylopodites. On each side of 

 the smooth dorsal ridge, which is white or of a pale yellowish 

 colour, each dactylopodite is marked, on its outer as well as on 

 its inner surface, with two red lines, separated from one another 

 by an equally broad white or pale line. Interrupted traces of 

 a fifth, much narrower line are observed along the under margin. 

 These lines are continued on the propodites, but in such a manner 

 that the two red lines which border the dorsal ridge of the dacty- 

 lopodite are each divided on the propodites into two lines, which 

 are separated by a rather broad pale yellowish space, and meet 

 again at both ends. The inferior red line of the outer sur- 

 face of the dactylopodite appears a little broader on the outer 

 surface of the propodite, undivided on the propodites of the third 

 pair, but with a narrow, pale, longitudinal space in its middle on 

 those of the second pair; on the inner surface of the joints this 

 line is, however, also divided into two narrow red lines, with a 

 pale yellowish space between them. The under margin of the 

 propodite is marked with a single red line, which, however, does 

 not reach the proximal end. On the outer surface of the pro- 

 podites of the legs of the third pair three red lines are therefore 

 observed, besides the red line on the under margin of each, the 



