134 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



also a curved black bar immediately behind the head, a black cross 

 band in the middle of the caudal peduncle, and a narrower one at the 

 base of the caudal fin, together with a roundish black spot on the 

 body at the anterior base of the anal fin. In a series of 24 specimens, 

 3 to 5.2 cm. long, obtained by Deignan from the Meping at Chiengmai, 

 April 22, 1935, all the marks except the dorsoventral band had become 

 vague or had altogether disappeared at a length of 5 cm., and the char- 

 acteristic adult markings on the caudal lobes began to be obvious at 

 about 4.7 cm. The size at which the young continue to bear their 

 juvenile markings varies with the locality or other conditions; thus 

 a specimen, 6 cm. long, from a brook on Kao Sabap, November 2, 1927, 

 retained the cross band on the caudal peduncle, and three fish, 7.5 

 to 8.3 cm. long, from the mouth of the Menam Chao Phya, November 

 13, 1927, had the same band, although it was becoming faint. 



The normal formula for the pharyngeal teeth is 5,3,1-1,3,5. Some 

 variations are shown in a few local specimens whose teeth have been 

 examined. The single tooth in the third row is sometimes in such close 

 alignment with the teeth in the second row that one could easily read 

 the formula as 5,4-4,5. In some cases the third row is altogether 

 absent, and the formula is then 5,3-3,5. In one specimen from the 

 Menam Chao Phya below Bangkok the teeth are 5,3,2-2,3,5. 



This fish is always given a distinctive vernacular name which, in 

 most places, is pla kasoop or kasooh. This name is frequently con- 

 tracted or corrupted into ;^Z« soop or /;/« sooh^ and in some sections 

 into pla soot and pla sood. Among the Malay people of Patani 

 Province the fish is called ikan tubo or ikon tuhu. 



KAMPALA DISPAR H. M. Smith 

 FlGTJRE 15 



Hampala dispar Smith, 1934b, p. 309, pi. 11 (Monaui Mun, Nong Han; Seamreap 

 River, Cambodia). 



The type of this species (U. S. N. M. No. 103366) came from the 

 Menam Mun at Ubon, Eastern Thailand, and all the other specimens, 

 four in number, that have been examined likewise came from the 

 basin of the Mekong, three from the large lake, Nong Han, at Sakon 

 Nakon, and one from the Seamreap Kiver, an aflluent of the Tonle 

 Sap or Grand Lake in Cambodia, French Indo-China. 



The largest preserved specimen was a female 17.3 cm. long. The 

 species, however, reaches a length of at least 20 cm. 



Wliile closely related to Hampala tnacrolepidota^ this form may be 

 distinguished by the shorter caudal fin, the enlarged lower lobe of the 

 caudal, the short maxillary barbel (less than one-third the diameter 

 of the eye, while in H. umcrolepidota it is about equal to or much 

 longer than the diameter of the eye), the absence of a well-marked 



