37. ACK0CH0RU0NIC1ITHYS. 95 



barbels do not extend to the end of the head. Belly entirety brownish 

 black. 



Sumatra (Palembang). 



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



3. Acrochordonichthys rugosus. 



Pimelodus rugosus, Sleek. Verh. Sat. Gen. xxi., Silur. p. 11. 

 Acrochordonichthys rugosus, Sleek. Prodr. Silur. p. 227, and Atl. Ichth. 

 Silur. p. G8. tab. 83. fig. 4. 



D. 1/5. A. 9. P. 1/7. 



The median groove on the upper surface of the head extends on 

 to the base of the occipital process ; there is a triangular impression 

 on each side of its hinder extremity ; occipital process more than twice 

 as lung as broad. The greatest width of the body is contained four 

 times and a third or four times and a sixth in the total length. The 

 maxillary barbels do not extend to the end of the opercle. Entirely 

 brownish. 



Java and Sumatra. 



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



4. Acrochordonichthys pleurostigma. 



Pimelodus pleurostigma, Sleek. Nat. Tydschr. Nederl. Ind. vii. p. 442. 

 Acrochordonichthys pleurostigma, Sleek. Prodr. Silur. p. 229. and Atl. 

 Ichth. Silur. p. 68. tab. 83. tig. 5. 



D. 1/5. A. 8. P. 1/6- 1. 



The median groove on the upper surface of the head extends on 

 to the base of the occipital process ; a single hollow on each side of 

 the hinder end of the fonticulus ; occipital process triangular, less 

 than twice as long as broad. The greatest width of the body is 

 contained four times and three-fourths or five times in the total 

 length. The maxillary barbel does not extend to the end of the 

 opercle. A series of several rounded yellow spots along the side. 



Java. 



a. One of the typical specimens. From Dr. P. v. Bleeker's Collection. 



5. Acrochordonichthys zonatus. 



Pimelodus zonatus, Sleek. Nat. Tydschr. Nederl. Ind. vii. p. 444. 

 Acrochordonichthys zonatus, Sleek. Prodr. Silur. p. 230, and Atl. Ichth. 

 Silur. p. 69. tab. 84. fig. 5. 



D. 1/5. A. 10. P. 1/7. 



The median groove on the upper surface of the head extends on to 

 the base of the occipital process ; there are a pair of shallow impres- 

 sions on each side of the hinder part of the fonticulus ; occipital 

 process twice, or more than twice, as long as broad. The greatest 

 width of the body is contained four times and three-fourths or five 



