282 CHAEACINID^S. 



e. Adult : stuffed. Demerara. From the Collection of the Zoolo- 

 gical Society. 



/. Young : not good state. Demerara. Presented by Dr. Hancock. 



g-h. Fine specimens. Essequibo River. Purchased of Mr. Ehrhardt. 



i. Adult. River Capin, Para. Purchased of Mr. Stevens. 



Tc. Young. River Cupai. Purchased of Mr. Stevens. 



I, m, n, o, p-q. Fine specimens. Bahia. From Dr. "Wucherer's 

 Collection. 



r, s. Adult. Brazil. 



t, u, v, w-x. Adult and half-grown. South America. 



y. Adult female : skeleton. Bahia. From Dr. "Wucherer's Collection. 



2. Macrodon intermedins. 

 D. 12-14. A. 11. V. 8. L. lat.43. 



Thirteen longitudinal series of scales across the back, in front of 

 the dorsal fin, from one lateral line to the* other; nine across the 

 middle of the back of the tail. 



The height of the body is contained about five times in the total 

 length (without caudal), the length of the head thrice and three- 

 fourths. Bones of the head striated. Vertical fins immaculate 

 in the larger specimen, with brown and yellow spots in the smaller 

 one ; body finely marbled with brown, each scale having a darker 

 base. 



Cipo River. 



a. Stuffed, 21 inches long. Presented by Ch. Cumberland, Esq. — 



Vernac. name: Trahira. 

 b Skin, 11 inches long. Presented by'Ch. Cumberland, Esq. 



3. Macrodon microlepis. 

 D. 14. A. 11. V. 8. L. lat. 43. 



Thirteen or fourteen longitudinal series of scales across the back, 

 in front of the dorsal fin, from one lateral line to the other ; eleven 

 across the back- of the tail. 



The height of the body is contained thrice and three-fourths in 

 the total length (without caudal) in adult females, and four times 

 and three-fourths in adult males, the length of the head thrice and 

 two-fifths. Bones of the head striated. Vertical fins with numerous 

 small round black spots ; body marbled with brown ; old specimens 

 with a broad, more or less distinct black band along the lateral line 

 and the joining halves of the series of scales nearest to it. Belly 

 immaculate, yellowish. 



"Western Ecuador ; Guatemala. 

 a, b-d. Adult (15 inches long) and young. Western Ecuador. From 



Mr. Fraser's Collection. 

 e-f, y. Adult and half-grown. Chagres River. From the Collec- 

 tion of Messrs. Dow and Salvin. 



