FRESH-WATER FISHES OF SIAM, OR THAILAND 571 



of Lacepede (1800). The type of Brachyam'blyo'pus is Amblyopics 

 hrachysoma Bleeker, which, with another Bleekerian species, is known 

 from Thailand. The two species that occur in Thailand are : 



la. Body more oi' less covered with small, scattered, partly imbedded scales, 

 larger posteriorly ; head naked ; anal rays 1,27 ; pink brachysoma 



1&. Body and head naked except for minute, scattered scales on posterior part of 

 length; anal rays 1,23; blood-red or greenish urolepis 



Giinther (1861, vol. 3, p. 136) retained the name Arriblyopus for 

 fishes properly called Taenioides and Gobioides for the remarkable 

 reasons that "it is generally used, and also because such names as 

 Gobioides, Taenioides, etc., should always be avoided." 



BRACHYAMBLYOPUS BRACHYSOMA (Bleeker) 



AmUyopus hrachysoma Bleeker, 1853 (86), p. 510 (Priaman, Sumatra). — ^von 

 Maktens, 1876, p. 393 (Bangkok). 



The only record of this fish in Thailand is that given by von Martens, 

 who listed it from fresh water in Bangkok. The species is otherwise 

 known from Sumatra. 



BRACHYAMBLYOPUS UROLEPIS (Bleeker) 

 Amhlyopus urolepis Bleekee, 1852 (67), p. 581 (Palembang, Sumatra). 



Described from rivers of Sumatra, this species was detected in 

 Thailand during the years 1923, 1927, and 1928, in the Bangpakong 

 and Chao Phya Rivers, and is probably not rare. 



The various specimens collected were 6.8 to 8 cm. long, and were 

 recorded as blood red when first taken. 



CARAGOBIOIDES, new genus 



The characters of the genus are those of the species set forth in the 

 key on page 568, which also separates it from all related genera. 

 Genotype. — Caragohius geomys Fowler. 



CARAGOBIOIDES GEOMYS (Fowler) 



Caragohius geomys Fowler, 1935a, p. 161, figs. 129, 130 (Bangkok). 



Known from eight specimens, 6.1 to 7.5 cm. long, taken in Bangkok 

 in May and July 1934, this species seems separable from Caragohius 

 typhlops Smith and Seale, the type of Caragohius from the Philip- 

 pines, by its more tapering body, 10 simple dorsal rays (against 6), 

 longer and more pointed caudal fin, and apparently uniserial teeth. 

 The last feature, if confirmed, together with the increased number 

 of simple dorsal rays, would, with other possible characters, probably 

 justify a special genus for its accommodation ; for this genus the name 

 Caragohioides is suggested. 



