526 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



tabim Estuary and the loAver Menam Chao Phya. It is, however, pri- 

 marily a salt-water form. 

 It reaches a length of 9 cm. but averages smaller. 



Genus MACGREGORELLA Scale 



Macgregorella Seam;, Philippine Journ. Sci., ser. A, gen. sci., vol. 4, p. 533, 1909. 

 (Type, Macgregorella moroana Seale.) 



The suggestion of Koumans (1931, p. 76) that the genus Macgreg- 

 orella may be synonymous with CaUogobius (Bleeker, 187-1) cannot be 

 accepted. The latter genus, which as far as the ventral fins are con- 

 cerned is near the border line of the eleotrids, has the basal membrane 

 very weakly or not at all developed, which is not true of Macgregorella. 



MACGREGORELLA MOROANA Seale 



Macgregorella moroana Seale, 1909, p. 533 ( Jolo, Jolo Island, Philippine Islands) ; 

 Smith, 1933a, p. 81 (Chantabun Estuary). 



Known otherwise only from the Philippines, this species has been 

 detected in Southeastern Thailand, where two specimens 3.8 and 4.8 

 cm. long were collected in 1931. Differences from the type specimens 

 as described by Seale are in the extension of the predorsal scales nearly 

 to the eyes and in the presence of imbedded and scarcely visible scales 

 on opercles and preopercles (as pointed out by Herre) , and in the pres- 

 ence of ctenoid scales on the caudal peduncle, the scales otherwise being 

 cycloid. 



Genus STIGMATOGOBIUS Bleeker 



StigmatogoMus Bleekee (453), Arch. Neerl. Sci. Nat., vol. 9, p. 323, 1874. (Type, 

 GoMus pleurostigma Bleeker.) 



The genus Stigmatogohius of Bleeker (1874) is very close to Vai- 

 mosa. The genotype is Gohius pleurostigma Bleeker, from the fresh 

 waters of Java, which is regarded as a synonym of sadanimdio. The 

 teeth in both jaws are in several rows, although in the original descrip- 

 tion of the genus the teeth in the upper jaw were erroneously stated to 

 be uniserial. The anterior margin of the tongue is rounded. The 

 scales on the back extend to or between the eyes, and the most anterior 

 scale is enlarged and unpaired ; the opercle is scaled. 



STIGMATOGOBIUS SADANUNDIO (Hamilton) 



OoUus sadanundio Hamilton, 1822, pp. 52, 366 (near Calcutta). 



Oobius apogonius Kakoli, 1882, p. 164 (Bangkok). 



Vavmosa spilopleura Smith, 1933a, p. 66, pi. 2, fig. 2 (Chantabun River, Chao 

 Phya, Bangpakong, and Tachin Rivers ) .—Hebke and MYEn?s, 1937, p. 41 

 (Negri Sembilan, Malaya ) .—Fowler, 1937, p. 252, fig. 279 (Tachin). 



Stigmatogohius sadanundio Fowler, 1935a, p. 161 (Bangkok). 



If the fish from Thailand and the Malay States that has been 

 called Vaimosa spilopleura is identifiable with the fish imperfectly 



