456 
ZOOLOGY OF THE FAR EAST. 
3. The fifth joint of the fourth and fifth thoracic Hmbs (first and second 
peraeopods) (pi. XIX, fig. 7) is only slightly longer than broad in Indian 
specimens and nearly twice as long as broad in those from China. 
These differences are very small compared with the very close resemblance 
between the Indian and Chinese specimens in other characters. I have given detailed 
figures of the Chinese forms to support my identification and to compare with the 
figures given by Stebbing for the Indian examples. 
I do not consider the differences I have pointed out are of specific importance. 
The Chinese examples are somewhat larger than those from India, 6 mm. for both 
sexes as against 4 mm. for the male and 5 mm. for the female. 
The agreement between my specimens and Stebbing's description extends to the 
details of the mouth parts and the armature of all the appendages. The accessory 
appendage of the first antenna is shorter than the first joint of the flagellum and is 
tipped by a few setae. The flagellum of the first antenna has eighteen joints in both 
sexes and that of the second antenna six joints in both sexes. 
Distribution. — This species is only known from brackish pools. Port Canning. 
Low^er Bengal, and from the localities in China enumerated above. The distribution 
of the genus is quite remarkable. The type species, G. mahafalensis, Coutiere, was 
found in an inland lake (water saline) in Madagascar, so that the genus now occurs 
in three isolated localities, Madagascar, Bengal and China. 
(Since the manuscript of this paper left my hands, the important paper by 
Professor Chilton (1921) on the Amphipoda of Chilka Lake has been published. In 
this paper Chilton has identified Grandidievella bonnieri, Stebbing, with the earlier 
Microdeutopiis megnae, Giles. I had overlooked Giles' species but I accept Chilton's 
identification and, while leaving the main body of my manuscript as it was written, 
I have altered the name of the species to read Grandidierella megnae (Giles). In the 
light of Chilton's description and figures practically all the small differences noted 
between Chinese, and Indian specimens disappear and the identity of the Indian and 
Chinese forms is confirmed. Chilton goes further and identifies the original species 
of Coutiere, G. mahafalensis, with Giles' species, so that the same species occurs in 
Madagascar, India and China. All my male specim.ens belong to Chilton's form I. 
Chilton places the genus in the family Aoridae and describes a second species, 
G. gilesi. W.M.T. September, 1921). 
LIST OF REFERENCES. 
Barnard, K. H., 1914 . . Contributions to the Crustacean Fauna of South 
Africa. 3. Additions to the marine Isopoda, with 
notes on some previoush' incompletely known 
species. 
Ann. S. Afric. Mus., Vol. X, pp. 325a-358a, 359- 
442, pis. xxvii-xxxviii. 
