354 Annals of the Carnegie Museum. 



differences between these two species are the number of scales in 

 the lateral series and the number of spines and rays. 



47. Crenicichla santaremensis, sp. nov. (Plate LXII, fig. i.) 

 The type, No. 2719, is 9.8 cm. long, and one cotype, 2720, is 7.8 cm. 



long. They were taken in a grassy lagoon along the margin of the 

 Amazon, three miles above Santarem, December 15, 1909. 



D. XXI, 11; A. Ill, 6 or 7; depth 5; head 2.7; eye 3.33; preorbital 

 one-third the diameter of the eye; snout one-third the length of the 



23 

 head; pores — ; interorbital space three-fifths the diameter of the eye; 



scales 68 to 75 in the first series below the lateral line; twelve rows of 

 scales between the lateral line and the first dorsal spine; three rows of 

 scales between the lateral line and the first dorsal ray, and two and 

 one-half rows between the lateral lines; caudal peduncle slightly longer 

 than deep; nine gill-rakers on the lower anterior arch; scales all well 

 denticulated, excepting a small patch in front of the ventral fins; max- 

 illaries extending beyond the front margin of the eye by one-fourth of 

 its diameter; nostrils much nearer the eye than to the tip of the snout. 

 Each scale in the lateral lines edged with black; a faint broad light 

 brown lateral band crossed by four broad vertical bands; vertical fins 

 in part edged with dark, but no spots or bars. 



In some of the details this species resembles C. macrophthalma, but 

 C. santaremensis has a much longer eye, a much narrower interorbital 

 and preorbital in comparison with the diameter of the eye; the nostrils 

 are much nearer the eye than to the tip of the snout; the scales are all 

 denticulated, excepting a few in front of the ventrals; the snout and 

 head are longer. The description of C. macrophthalma agrees much 

 better with C. tvaUacei than with these specimens. 



48. Crenicichla vittata Meckel. 



No. 2709G-6, 5.3 and 6.8 cm., Corumba, Rio Paraguay, April 27, 1909. 

 No. 27ioa-c, 2.3-3.2 cm.. Villa Hays, Paraguay, April 3, 1909. 



One has D. XXII, 14; less than eighty-four scales in the first series 

 below the lateral line; fins slightly colored, the maxillaries almost 

 extending to the front edge of the eyes. 



No. 2711, 6 cm., Campos Alegre, Rio Jauru, June 24, 1909. 

 No. 2712, 6.3 cm., Corumba, Rio Paraguay, May 9, 1909. 

 No. 27130-^, 5-22.2 cm., Uruguayana, Feb. 5, 1909. 



29 

 D. XXII, 14; A. Ill, 9; pores -; scales 81; depth 4.5; head 3.1; 



13 



