FRESH-WATER FISHES OF SIAM, OR THAILAND 



343 



Remarks. — This species is most closely related to K. hexaptenis^ with 

 which it agrees in the absence of a dorsal fin, ventral fin with 8 rays, 

 comparatively deep body, and vomerine teeth in a short, straight band. 

 Differences from K. hexapteims are in the longer head (5,8 instead of 

 6.5 to 7.2 in length in examples of the same size), fewer anal rays (66 

 against 74 to 83), fewer pectoral rays (i, 13 against i, 16 or i, 17), non- 

 projecting lower jaw, etc. 



Figure 78. — Kryptopterus moorei, new species: Type (U.S.N.M. No. 109787). 



Miss Jane Roller. 



Drawn bv 



This species is named for K. Adey Moore, of Bangkok, for many 

 years the efficient honorary secretary of the Siam Society, in slight 

 recognition of his sustained interest in the promotion of zoological 

 science in Thailand. 



KRYPTOPTERUS APOGON (Bleeker) 



Silurus apogon Bleeker, 1851 (42), p. 67 (Bandjermassing, Borneo). 

 Kryptopterus apogon Smith, 1933a, p. 75 (Menam Chao Phya). — Fowler, 1935a, 

 p. 96 (Bangkok). 



Although previously unknown outside of Sumatra and Borneo, this 

 fish has in recent years been found to be fairly common in the Menam 

 Chao Phya and connecting streams from Paknam to Lopburi. 



Examples preserved have been from 12 to 20 cm. long. A length of 

 77 cm. is reported from the East Indies by Weber and de Beaufort. 



The unusually inappropriate specific name of apogon is justified by 

 a few Thailand specimens in which the mandibulary barbels are ves- 

 tigial or altogether lacking. 



The fish is called pla neua on, pla demg, pla cha oan, and pla Tiam 

 ngeon in various parts of its range in Thailand. 



KRYPTOPTERUS MICRONEMA (Bleeker) 



Silurus micronemus Bleekeb, 1846 (4), p. 289 (Batavia). 



Mici-onema typus Bleeker, 1865 (356), p. 175 (Siam). — Sauvage, 1881, p. 161 



(Siam). 

 Cryptopterus micronema Weber and de Beaufort, 1913, vol. 2, p. 221 (Siam). 

 Kryptopterus micronema Fowler, 19r34a, p. 87 (Bangkok) ; 1937, p. 137, figs. 



13-15 (Bangkok). 

 Kryptopterus deignani Fowler, 1937, p. 136, figs. 10-12 (Mepoon). 



The known habitat of this species is Java, Borneo, and Thailand 

 although it is rare in Thailand. A specimen 19 cm. long, in the 



