23. PANGASIUS. 63 



4. Pangasius rios. 



Bleeher, Xat. Tijdich: Kcdvrl. Ind. ii. p. 205 ; Prodi: Silur. p. 184; and 

 Atl. Ichth. Silur. p. 74. tab. 7'J. fig-. 1. 



B. 9. D. 1/7. A. 33. P. 1/13-14. 



The height of the body is contained five times to four times and a 

 quarter in the total length (without caudal), the length of the head 

 live times. Head covered with smooth skin above ; snout obtusely 

 rounded ; the diameter of the eye is about one-third of the length 

 of the head. The length of the barbels is less than one-half of that 

 of the head. The teeth on the palate form four small separate patches. 

 Dorsal tin lower than the body ; its spine is of moderate strength, 

 shorter than the head, and serrated. Pectorals scarcely shorter than the 

 head, their spine being rather longer than that of the dorsal fin. (Bl.) 



South Borneo. 



a. Type of the species : very bad state. From Dr. P. v. Bleeker's 



Collection. 



b. Adult. From Dr. P. v. Bleeker's Collection. 



5. Pangasius micronema. 



Blevher, Verkniid. BatmK Genootsch. xxi., Silur. Jar. p. 8 ; Prodr. Silia: 

 p. 185; and Atl. Ichth. Silur. p. 75. tab. 77. fig. 2. 



B. 9. D. 1/7. A. 29. P. 1/11-12. 



The height of the body is a little more than the length of the head, 

 which is rather less than one-fifth of the total (without caudal). 

 The occipital process is covered with smooth skin, or longitudinally 

 striated. The maxillary barbels extend to, or nearly to, the opercles, 

 those of the mandible bemg as long as the eye. The teeth on the 

 palate form four longish patches arranged in a crescent. Dcu-sal fin 

 lower than the body ; its spine is of moderate strength, serrated, two- 

 thii-ds or five-sixths of the length of the head. Pectorals scarcely 

 shorter than the head, with their spine rather longer than that of the 

 dorsal fin. 



Java. 



a. Type of the species. From Dr. P. v. Blocker's Collection. 

 6. Pangasius nasutus. 



Pseudopangasius nasutus, Bleck. Versl. Kon. Akad. Wet. xv. p. 72, 

 and Atl. Ichth. Silur. p. 76. tab. 29. fig. ]. 



B. 9. D. 1/7. A. 29. P. 1/11. V. 6. 

 Snout pointed, with the upper jaw projecting. The maxillary 

 barbels are not much longer than those of the mandible, and extend 

 to the base of the pectorals. The vomerine teeth form a band, which 

 is more than t^nce as broad as long, and separate from the oblong 

 palatine patches. The soft dorsal fin is as high as the body ; its spine 

 is strong, two-thirds of the length of the head, and serrated behind. 

 Pectorals shorter than the head. The mucous cavity in tlie axil of 



