296 
ZOOLOGY OF THE FAR EAST. 
In the paper cited above I have drawn particular attention to the four individuals 
from the Prai river, for it is on their characters that I have based my statement that 
the male in this species is dimorphic. In all the four specimens (precisely as in males of 
A . indicus and A . erythraeus) the ultimate segment of the antennular peduncle is slender 
and longer than the basal segment. In examples of the same sex from the Patan 
river, as well as in numerous males from three separate localities on the west coast of 
the Bay of Bengal, the ultimate peduncular segment is invariably short, closely 
resembling that of the female ' : the specific identity of the Prai river specimens 
is proved beyond doubt by the distinctive form of the petasma. 
Acetes japonicus, Klishinouye. 
1917. Acetes japonicus, Kemp. Rec. Ind. Mus., XIII, p. 56, text-figs. 
The collection contains numerous specimens obtained in the market at Osaka in 
Japan, a considerable number from the Tale Sap and a few from the Patani river in 
the Siamese Malay States. The examples from the Tale Sap were found along with a 
few A . indicus at the mouth of the outer lake near Singgora in water of specific 
gravity varying from 1004 to 10085 (corrected). Those from the Patani river were 
taken in company with A. erythraeus in water that was fresh at the time of their 
capture but subject to tidal influence. 
Genus Lucifer, Thompson. 
Lucifer hanseni, Nobili. 
1906. Lucifer hanseni, Nobili, Ann. Set. nat., Zool. (9), IV, p. 25, pi. ii, fig. i and text-fig. 36, 
p. 27. 
1915. Lucifer hanseni, Kemp, Mem. Ind. Mus., V, p. 324, text-figs, sya-d. 
1916. Leucifer hanseni, Borradaile, Brit. Antarct. Exped., ' Terra Nova,' Zool., Ill, p. 83. 
A number of specimens were obtained in the outer lake of the Tale Sap, between 
Koh Yaw and the mainland and at the mouth of the lake near Singgora. The speci- 
fic gravity of the water in which they were found varied from 1-00625 to 1*0085 
(corrected) . 
Lucifer hanseni was described by Nobili from the Red Sea and has recently been 
recorded by Borradaile from Melbourne. 
STOMATOPODA. 
Family SQUILLIDAE. 
Genus Squill a, Fabricius. 
Four species and one variety of Stomatopoda, all belonging to the genus Squilla, 
were found by Dr. Annandale at the mouth of the Tale Sap in Peninsular Siam. 
They were obtained in fishermen's nets and all were caught in water of specific gravity 
1-0085 (corrected). 
1 I have recently examined a large male of A. erythraeus from Silavathurai Lagoon, near Tuticorin, S. India, which 
agrees exactly with the specimens from the Prai River. This is the first record of the " high " dimorphic male from the 
coasts of British India. We are indebted to Mr. J. Hornell for the specimen. 
