CKUSTAOKA — WIIITKLKCCK. 193 



joints the actual relative length of each is often diflicult to 

 detennine owiii^ to the unecjual production of the apical portion ; 

 and whether viewed from the superior or inferior surface the same 

 remark a{)plies to the upper spine on the iinier border of the 

 merus, which, when viewed from one side, ajjpears to be seated 

 on the distal marijin, but seen from the other its tip is about 

 level with the margin The validity of tlie species enumerated 

 is an open question, and cannot be satisfactorily determined until 

 a larger series of each are available ; the amount of variation in 

 the parts relied on as specific characters may then be estimated. 



Under these circumstances it has been deemed best to leave 

 the closely allied forms as they were, and give a brief description 

 of each. The species dealt with in this manner are G. austra- 

 liensis, G. coixdlicola and G. aculeata, none of which were obtained 

 by the " Thetis " expedition. 



The tvi^o remaining forms — G. magnifica and the species under 

 notice — have been treated as fully as the material would admit ; 

 both appear to be quite distinct from any other Australian forms. 



They were obtained off Wata Mooli, in 54-59 fathoms. 



MUNIDA, Leach. 



MUNIDA HASWELLI, Henderson. 



Jlunida haswelli, Henderson, Chall. Rep., Zool., xxvii., 1888, 

 p. 139, pi. iii., fig. 5, 5a-56. 



Stations 37, 48, 56, 57. 



About sixty examples of this species are in the collection, 

 ncluding many young and a few females bearing ova. The 

 ■ largest male is about the same size as the type. The right chela 

 agrees with that figured by Henderson in the relative proportion 

 of the fingers to the palm, and also in the number of spines, of 

 which there are five on the upper border. It is stated in the 

 explanation of figure 5« that the chela is " doubtfully referred 

 to this species." It appears to have been correctly delineated, 

 and well represents tlie right chela as seen in the majority of the 

 " Thetis " specimens. In some of the larger individuals of both 

 sexes the lingers are not straight, but bent outwards at the base, 

 and have a wide gap between their proximal edges when closed. 

 The spinulation of the external maxillipedes difiers slightly from 

 the description given by Henderson. The inner border of the merus 

 joint has five spinules, of which the proximal is large, the distal 

 moderate, and the three between small ; the outer border has six 

 spinules — the distal one of moderate size, the remaining five 



