FRESH-WATER FISHES OF SIAM, OR THAILAND 545 



46. Predorsal scales 10 ; second and third dorsal spines elongated ; body 

 with about 5 irregular blackish brown blotches ; head with about 5 

 sharply defined blackish brown bars; dorsal fin with broad pale 

 margin, anal fin mostly blackish vexillifer 



CTENOGOBIUS OCELLATUS (Fowler) 



TvkagoUus ocellatus Fowler, 1937, p. 250, fig. 261 (Kemarat). 



The type, 10.3 cm. long, and 3 parat3'^pes, 7.8 to 8 cm. long, came from 

 Kemarat, on the Mekong, in Eastern Thailand. The scales in longi- 

 tudinal series number 37 to 60 and in transverse series 15 to 17, with 18 

 to 22 predorsal scales not extending to the eyes. The circular ventral 

 disk has a broadly bilobate frenum. Outstanding color features are 

 brown body with 7 or 8 dark saddles extending from back down to the 

 middle of the sides ; a black white-edged ocellus on the upper pectoral 

 base and a distinct round dark or blackish spot on the upper base of 

 the caudal fin. 



The genus Tukugohius, established by Herre in 1927, was abandoned 

 by him in 1933, when he determined that the essential characters, espe- 

 cially the ventral fins with bilobate circular frenum, were possessed 

 by Rhinogohius similis Gill. 



CTENOGOBIUS CRINIGER (Cnvier and Valenciennes) 



GoUus criniger Cuviek and Valenciennes, 1837, vol. 12, p. 82 (New Guinea). 

 Ctenogoblus cfiniger Suvatti, 1936, p. 153 (Central, Southeastern, and Peninsular 

 Siam). 



While this very widely distributed species, ranging from Africa 

 and Australia to the Indo- Australian Archipelago, Philippines, India, 

 and Southeastern Asia, has been found in various coastal regions of 

 Thailand, there seems to be no published record except that of Suvatti 

 (1936), who listed the fish on the basis of information as contained in 

 a manuscript catalog prepared by the writer. The fish is known, and 

 represented by specimens, from the Menam Tachin in Central Thai- 

 land; from Sriracha, Chantabun Estuary, Chantabun Kiver, and Koh 

 Chang in the Southeastern region; and from Singora and Patani in 

 the Peninsula. 



A length of 10 to 11 cm. is reached in local waters. 



This fish may be recognized by having large irregular blackish 

 or blackish brown blotches on the back and side, interspersed with 

 smaller spots ; lines of spots on the second dorsal and caudal fins ; and 

 a black edge to the anal fin. The scales in longitudinal series are 28 

 to 30, in transverse series about 12, the head is either wholly naked 

 or may have a few cycloid scales in a band back of the eye, and there 

 may be a few scattered scales in front of the dorsal fin. The outer 

 row of the pluriserial teeth in each jaw consists of enlarged but 



