CRUSTACEA WIIITELKGGE. 



189 



Total length of body from tip of rostrum 



end of telson 

 Length of carapace, rostrum excluded 

 Breadth of carapace... 

 Length of left chelipede (detached) 



,, ,, merus 



„ „ carpus 



„ „ Pfi-l") 



„ ,, mobile finger 



,, second leg ... 



,, merus 



„ carpus 



„ propodus ... 



,, tarsus 



to 



1 4 mm. 



11 

 3-5 



2 



3 



2-5 



8 



2-5 



1-2 



1-9 



1-2 



*GALATHEA AUSTRALIENSIS, Stimpson. 



Galathea australiensis, Stimpson, Proc. Acad. Nat. Sci. Phil., x., 

 1858, p. 89, sp. 351. Haswell, Aust. Mus. Cat. v., Crust., 

 1882, p. 161, sp. 304. Miers, Zool. Coll. " Alert," 1884, 

 p. 277, pi. xxxi., fig. (B.).t Henderson, Chall. Rep., Zool., 

 xxvii., 1888, p. 118. 



The following are a few important characters which appear to 

 have been omitted in previous descriptions : — 



The rostrum is depressed, about 0*9 mm. long and 7 mm. wide 

 at the base; when viewed in profile from the side, its tip is in the 

 same plane as the first antero-lateral spines ; the central area is 

 longitudinally grooved and the margins are somewhat inflexed ; 

 the tips of the gastric spines extend over the base of the rostrum. 



The ischium joint of the third maxillipedes is longer by O'l mm. 

 than the merus ; the inner border is setiferous and has a distinct 

 spine at its distal end ; there is also a small obscure spinule on 

 the outer extremity. 



The rather oblique (cutting) ridge on the anterior surface bears 

 about twenty-one denticles ; the preceding joint has also a few 

 indistinct ones. 



The merus joint is armed on its inner border with two spines, 

 one large about the middle and the other small and situated near 

 to the distal margin. 



Carpus with two or three small spinules on the outer border, 

 subtended by tufts of setse. 



* Species marked with an asterisk were not obtained by the " Thetis" 

 expedition. 



+ This should be A according to the lettering of the plate. 



