The Amphipoda of Tale Sap. 
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male, the carpus triangular, produced on the posterior side into a large rounded 
lobe partially overlapping the propod ; the propod about as broad as the carpus, 
oval, palm oblique, not well defined. The third uropod has the two branches very 
unequal the larger one rather broad, only about twice as long as the peduncle, 
its terminal joint slender, the inner branch small and rather shorter than the 
peduncle. 
Fig. I. Niphargus chilkensis Chilton. 
a. First gnathopod of female. 
b. Second gnathopod of female. 
c. Third uropod of female. 
Allied forms have been described from the Philippine Islands and from New 
South Wales in Australia. 
Distribution. Chilka Lake, Tale Sap. 
Talorchestia gracilis Dana. 
Talorchestia gracilis, Dana, 1852-55, p. 861. 
T. martensii. Chilton, 1921, p. 541. 
Locality. Station 32. Shore Collecting at Kaw Deng inside mouth of I^ake, 
Tale Sap. 
One specimen, a male with greatly elongated second antennae. 
Specimens received some time ago from Professor C. F. Baker of Los Banos, 
Philippine Islands, show that this species which was described in the Chilka Lake 
Amphipoda under the name of T. martensii is undoubtedly the same as Dana's 
T. gracilis originally described from Balabac Passage, Philippines. In the fully 
grown males the second antennae are greatly elongated and very slender ; the 
form figured from the Chilka Lake was perhaps not quite fully developed, and 
its identity with Dana's species was therefore not recognised at the time. 
Distribution. Tale Sap ; Chilka Lake ; Philippine Islands. 
