370 Annals of the Carnegie Museum. 



4-31-9; eye 3.25 in head; snout 2.16 in head; depth 2.67; caudal 

 peduncle one and one-fourth times as long as deep; fold of lower lip 

 continuous; soft dorsal and anal scaleless; 2.33 scales between lateral 

 line and first dorsal ray. 



When variations due to size are considered, I am unable to draw any 

 distincton between G. acuticeps and G. dcrmon. Geophagus jiirnpnri 

 and dcBtnon are very closely related in the same manner as are G. 

 brasiliensis, gymnogenys, brachyiirus, and halzanii. 

 75. Geophagus jurupari Meckel. 



G. pappaterra Meckel. 

 No. 2828, 17.3 cm., Bastos, Rio Alegre, June 28, 1909. 



D. XVI, 10; A. ni, 7; depth 2.67; head 3; eye 4.5 in head, 2.75 

 in snout; 2 in preorbital and 1.33 in interorbital space; pectoral fin 

 as long as the head and extending slightly beyond the origin of the 

 anal; six rows of scales on the cheeks; caudal peduncle one and one- 

 fifth times as long as deep; sixteen gill-rakers; fourteen rows of scales 

 between the dorsal and pectoral fins, of which the middle rows have 

 thirty-one scales; dorsal and anal fins scaleless; dorsal spines only 

 slightly increasing from the fifth to the last, which is half as long as 

 the head. In life this specimen was yellowish-brown with a dark band 

 from the operculum to the base of caudal, where it ends in a black 

 spot on the upper half of base of caudal; six black spots beneath base 

 of dorsal, these spots being remains of cross-bar*^ seen in smaller speci- 

 mens; fins uniformly dark in color: no blue spots on the head; two 

 scales between the lateral line and first dorsal rays. This specimen 

 dififers a great deal from G. jurupari, but the series of smaller speci- 

 mens makes me feel sure that G. pappaterra is a synonym of G. juru- 

 pari. 

 No. 2829, 15 cm., Sao Luiz de Caceres, Rio Paraguay, May 24, 1909. 



D. XV, 10; A. Ill, 7; depth 2.5; head 3; snout about 2; eye 4.5; 



19 

 scales 4-29-10 ; pores ; seventeen and eighteen gill-rakers on the 

 10 



first two lower anterior arches; caudal peduncle about as long as deep; 

 preorbital one and two-thirds times the diameter of the eye; inter- 

 orbital space one and one-fourth the diameter of the eye; pectorals 

 about the length of the head and extending to the origin of the anal; 

 fold of lower lip subcontinuous; vertical fins with a few spots; median 

 lateral band with broken cross-bands; spines about subequal from the 

 fourth, which is not quite half as long as the head. 



