378 OSTKOGLOSSID^. 



1. Osteoglossum bicirrhosum. 



Osteoglossum bicin-hosiun, Vandelli ; A(/ass. in Spix, Pise. Bras. p. 47. 



Isclmosoma bicirrhosum, Spiv, I. c. tab. 25 (anal and caudal tins ab- 

 normally united) and (anal.) tab. A. 



Osteoglossum vaudellii, Cuv. Reyne Anivi. ; Cuv. 8f Val. xix. p. 294, 

 pi. 571. 



arowana, Schomhwf/k, Fish. Guiana, p. 205, pi. 12 (very bad). 



B. 10. D. 43-46. A. 50-51. L. lat. 32. L. transv. 3|/2. 



Vert. 31/30 {ffi/rll). 

 The length of the head is one-fifth of the total (without caudal). 

 Distance between the pectoral and ventral fins less than the length 

 of the head. Scarcely any free space between anal and caudal fins. 

 Barbels varying in length. 

 Brazil ; Guyanas. 



a. Twenty-five inches long. Para. Presented by J. P. G. Smith, 



Esq. 

 6. Twelve inches long. British Guyana. Presented by Sir E. 



Schomburgu;. 



2. Osteoglossum formosum. 



MiiU. <§• Schleq. Verh. Nat. Gcsch. Ned, overz. Bez. Zool. Visseh. pi. 1 ; 

 Bleek. Nat. Tyd. Ned. Ind. ii. p. 436. 



B. 15. D. 18-20. i. 27. V. 5. L. lat. 24. L. transv. 2|/2. 



The length of the head is two-sevenths of the total (without 

 caudal), and equal to the distance between the pectoral and ventral 

 fins. A distinct space between the anal and caudal. Barbels vary- 

 ing in length. 



Borneo, Banka, and Sumatra. 



a. Skin in spirits. Borneo. From the Leyden Museum. 



3. Osteoglossum leichardti. 



Scleropages leichardti, Giinth. I. c. p. 196, pi. 7. 



D. 20. A. 31. Y. 5. L. lat. 35. L. transv. 3/4. 

 The length of the head is contained thrice and three-fourths in 

 the total (without caudal), and rather more than the distance be- 

 tween the pectoral and ventral fins. A distinct space between anal 

 and caudal. Barbels very small. 

 Queensland. 



a. Tj'pe of the species, stuffed, 28 inches long. From Leichardt's 

 Collection. 



