59. ARITTS. 159 



Arius cliondropterygius, Meek. I. c. p. 35. 



melanopterygius, Week. I. c. xxii. Menhir, p. 10. 



Cephalocassis ctelatus, Bleek. Prodr. Silur. p. 110. 



D. 1/7. A. 19-20. P. 1/9. 

 The height of the body is one-fourth or one-fifth of the total length 

 (without caudal), the length of the head two-sevenths or one-fourth. 

 Head broader than high, its greatest width being equal to its length 

 without snout ; snout short and obtuse, its extent being one-half of 

 the width of the interorbital space. Teeth on 

 the palate in two widely separate subtriangular 

 patches of moderate size, the vomerine teeth 

 being more or less confluent with those of the 

 palatines. The maxillary barbel extends to 

 the middle of the pectoral fin, the outer of the 

 mandible being somewhat shorter. The upper surface of the head 

 slightly granulated. Occipital process of moderate length, not much 

 broader at the base than at its concave end, elevated along the middle. 

 The basal bone of the dorsal spine is small, crescent-shaped. Dorsal 

 spine very strong, particularly in its basal half, which is granulated, 

 tapering from the middle ; it is as long as the head. Adipose fin 

 much shorter than dorsal. Pectoral spine shorter and less strong than 

 that of the dorsal fin. Adipose fin black, with its posterior margin 

 yellowish. 



East Indies. 

 a. Eleven inches long. Purchased of Mr. Frank. 

 b-c. Seven inches long. Siam. Purchased of Mr. Jamrach. — These 



specimens have the soft appendage of the dorsal spine produced 



into a long filament. 



36. Arius sinensis. 



Arius sinensis, Cuv. Sf Veil. xv. p. 72. 

 D. 7. A. 13. 

 Occipital process subquadrangular, elongate. Maxillary barbel as 

 long as the head ; those of the man'dible equal in length, and half as 

 long as the head. (Val.) 

 China. 



37. Arius venosus. 



? Arius venosus, Cuv. 8f Val. xv. p. 69. 



Arius venosus, Sleek. Verh. Bat. Gen. xxi. Silur. Batav. p. 39, and Ail. 

 Ichth. Silur. p. 33. tab. 54. fig. 1. 



lfeviceps, Bleek. I. c. p. 38. 



rnicruropterygius, Bleek. I. c. p. 38. 



macruropterygius, Bleek. I. c. p. 37. 



manjong, Bleek. 1. c. p. 36. 



micronotacanthus, Bleek. I. c. p. 36. 



Cephalocassis venosus, Bleek. Prodr. Silur. p. 113. 



D. 1/7. A. 18-19. P. 1/10. 



The height of the body is one-fifth or a little more than one-fifth 



