I. '08. 



168 



fully one and a quarter times the length of the former. The 

 number and arrangement of the spinules on the dorsal and 

 ventral aspects of the merus, carpus and propodus seems to 

 be subject to considerable variation. The fourth and fifth 

 pairs of legs are about equal in length, each being slightly 

 shorter than the third. The merus is a little shorter than the 

 carpus and about one-third longer than the propodus. The 

 carpus and propodus are subdivided into several rather obscure 

 joints ; in both pairs the carpus is composed of five joints and 

 the propodus of four. The dactylus is simple and acutely- 

 pointed and more than one-third of the propodus in length. 



The branchial formula 



is : — 



- 















vn. 



VTTT. 



IX. 



X. 



XL 



XII. 



xin. 



XIV. 



1 



Podobranchiae, ... j ep. 



l + ep. 



ep. 



ep. 



ep. 



ep. 



ep. 





Arthrobranchiae, ... { ... 



1 



2 



2 



2 



2 



2 



... 



Pleurobranchiae, 



1 





1 



1 



1 



1 



1 



1 



There is a small rounded setose lobe immediately above the 

 base of the last pair of pereiopods. 



The first pair of pleopods are uniramous in the female ; the 

 rest are biramous, with both inner and outer branches broadly 

 lanceolate. The outer uropod (fig. 9) is about twice as long as 

 wide ; it is broadly rounded at the apex and bears four or five 

 spines on its outer margin. The lamella is stiffened by tw^o 

 longitudinal parallel ribs. The inner uropod is rather less 

 than three times as long as wide and has onl}^ a single longi- 

 tudinal rib. 



The eggs of this species are very large, measuring approxi- 

 mately 2 mm. by 1*5 mm. in longer and shorter diameter. 



-The largest specimen examined measures about 21'5 



Size. 

 mm. 



Colour in life. — The carapace is very pale red, almost trans- 

 parent, with numerous red chromatophores on its posterior 

 half ; the hepatic region is yellowish and shows faintly through 

 the cephalothoracic walls. The first five abdominal somites 

 are pale rose red ; the sixth somite, telson, and uropods are 

 transparent. The rostrum and eyestalk are rather thickly 

 dotted with minute red chromatophores ; the corneal area is 

 pale orange and very strongly refractive. The antennules, 

 antennae, third maxillipedes, pereiopods and pleopods are all 

 transparent; the mandibles, maxillae and first two maxilli- 

 pedes are deep red. The eggs, when first extruded, are deep 

 black in colour, but change immediately to a salmon pink when 

 placed in spirit. 



The larvae enclosed within eggs attached to one of the speci- 

 mens are in a very advanced condition and are apparently 



