296 BULLETIN 18 8, UNITED STATES NATIONAL MUSEUM 



ern Thailand did not agree closely with L. octocirrhus and seemed 

 closer to L. herdmorei than to any other species. 



LEPIDOCEPHALUS TAENIATUS Fowler 



Lepidocephalus taeniatus Fowler, 1939, p. 63, figs. 11, 12 (Trang). 



This small form, described from seven specimens from a waterfall 

 stream near Trang, differs from all the other local species in the 

 reduced number of scales in the lateral series, as indicated in the key. 



The type and largest example is 5 cm. long. 



Genus ACANTHOPSIS van Hasselt 



Acanthopsis van Hasselt, in F6russac, Bull. Sci. Nat., vol. 2, p. 377, 1824. (Type, 

 Acanthopsis dialuzona van Hasselt.) 



ACANTHOPSIS CHOIRORHYNCHOS (Bleeker) 



FiQtniE 60 



Coxitis choirorhynchos Bleekee, 1854 (106), p. 95 (Palembang, Sumatra). 

 Acanthopsis choerorhynclius Boulenger, 1903, p. 303 (Patani River). 

 Acanthopsis choirorhynchos Fowler, 1935a, p. 106, figs. 35—42 (Khao Nam Poo) ; 



1937, p. 152 (Bangkok, Pitsanulok, Mepoon, Tachin, Kemarat) ; 1939, p. 59 



(Trang). 



This species of grotesque physiognomy inhabits Burma, Malaya, 

 Sumatra, Borneo, Java, and French Indo-China, as well as Thailand. 

 It was first recorded from the latter country in 1923. Wliile this 

 fish attains its largest size in swift, clear streams with sandy or 

 gravelly bottom, it is found also in large rivers like the Menam Chao 

 Phya and the Meklong, and in swamps and their outlets, such as the 

 narrow swift streams draining Bung Borapet. Localities repre- 

 sented by specimens collected for the Siamese Bureau of Fisheries 

 are: Central Thailand — Menam Chao Phya at Bangkok, Nakon 

 Sawan, and Paknampo; Menam Nan near Paknampo; Bung Borapet; 

 Meyom at Prae; Meklong at Rajaburi and the west branch of the 

 Meklong far north of Kanburi. Eastern Thailand — Menam Mun near 

 Korat. Peninsular Thailand — Ronpibun (pond), Nam Tadi in Na- 

 kon Sritamarat. Southeastern Thailand — Nonjr Khor and Chanta- 



Figure 60. — Jcanthopsis choirorhynchos (Bleeker). Drawn by Luang Masya; courtesy 

 of the Thailand Government. 



