482 BULLETIN 188, tJNiTED STATES NATIONAL MUSEUM 



titled to a place in this catalog from Hora's record of three young 

 specimens taken in the Tale Sap, and also Weber and de Beaufort re- 

 cord it from Siam. The maximum length appears to be about 10 cm. 

 Under the name Amhassw safgha (Forskal) Fowler (1937 and 

 1939) recorded the species from Rayong, a fishing village on the coast of 

 Southeastern Thailand and from a brook in the Peninsula. If For- 

 skal's Sciaena safgha is identifiable with the present species, safgha 

 becomes the proper specific name. 



CHANDA THOMASI (Day) 



Ambassis thomassi Day, 1870a, p. 369 (Calicut and Mangalore, India). — Hora, 

 1923b, p. 170 (Menam Chao Phya at Bangkok, Nontaburi). 



The only Thailand record for this Indian species is that of Hora, who 

 had before him two specimens from the Bangkok region. In view of 

 Duncker's reporting of the species in Malaya, its occurrence in Thai- 

 land is not unexpected. 



In India the fish reaches a length of at least 18 cm. 



This species was named for H. S. Thomas by Day (1870) who, in 

 the original description and subsequently, used the name thoinassi. 

 This form is an obvious error. 



CHANDA WOLFFII (Bleeker) 



Ambassis wolffii Bleekek, 1851 (26), p. 9 (Bandjermassing, Borneo). — Fowlee, 



1934a, p. 151 (Bangkok). 

 Ambassis wolffi Bleeker, 1S65 (356), p. 173 (Siam) ; 1870-77 (301), vol. 8, p. 133 



(Siam). — Weber and de Beaufort, 1929, vol. 5, p. 401 (Siam). — Fowler, 



1935a, p. 144 (Bangkok). 

 Acanthoperca ivolffli Fowler, 1937, p. 230, fig. 227 (Bangkok, Paknam, Tachin). 



This fish of the rivers of Borneo and Sumatra is the commonest and 

 most widely distributed member of this genus in Thailand. It has 

 been found in numerous places in the basin of the Menam Chao Phya 

 as far north as Lopburi and in the lower Bangpakong. In November 

 1923 it was very common in the Sikuk River at Ban Pan in company 

 with C. baculis. 



It is the largest of the local species, reaching a length in excess of 

 20 cm. A specimen 18,5 cm. long taken in the Menam Chao Phya at 

 Bang Torani February 6, 1927, was a female with ripe eggs. 



The vernacular name in general use is pla kamao. 



CHANDA SIAMENSIS Fowler 



Chanda siamensis Fowler, 1937, p. 230, fig. 228 (Bangkok, Kemarat). 



Described from numerous specimens, 2.5 to 6 cm. long, from the 

 Menam Chao Phya at Bangkok and the Mekong at Kemarat, this spe- 

 cies may be recognized by the characters indicated in the foregoing 



