46 



INDIANA UNIVERSITY 



55G3 O, M. Paratypes, 7, 46-57 mm. Lagoa de Pereira. Dec. 23, 1907. 

 Haseman. 



5568 O. M. Paratypes, 7, 31-G3 mm. Boqneii'ao near month of Rioi Preto. 

 Jan. G, 1908. Haseman. 



5569 C. M. Paratypes 40, 32-67 nnn. Penedo. March 20, 1908. Haseman. 



5570 C. M. Paratypes, 23, . hirgest 75 mm. Santa Kita. Jan. 24, 1908. 

 Haseman. 



M. O. Z. 3, 60-80 "mm. Rio San Francisco below the falls. 1867. Hartt. 



This species, first collected by Hartt in 1867, was found by Haseman in 

 the San Francisco' from its month to Piro])ora. It is as far as known 

 confined to the San Francisco basin. 



In the Paranahiba jnst north of the San Francisco basin, F. orbicaJaria 

 is fonnd. 



Most readily distinguished by its simple, spine-like, predorsal spine. 



Head 3.75; depth about 1.7-2; D. 10 or 11; A. 34-38; scales 8-33 to 

 37-8 ; eye 2.75 in head, a little greater than interorbital. 



Compressed, the more elongate specimens oval, the deeper ones sub- 

 rhomboidal, the deepest point at the origin of the anal ; preanal region 

 very narrowly rounded ; predorsal, in part, with a naked median line, in 

 l»art with the scales of one side or the other bent over the ridge; occipital 

 jirocess about 3 in the distance from its base to the first dorsal ray, bor- 

 dered by about 5 scales along each side; nape depressed; interorbital 

 broad, convex ; frontal fontanel equal to the parietal ; second suborbital 

 leaving a wider naked border below than behind ; maxillary-premaxillary 

 border 2-2.5 in the head; usually four teeth in the outer row of the pre- 

 maxillary, five in the inner ; maxillary with two teeth ; mandible with 

 four large teeth, the second out of line, and five to seven minute teeth an- 

 teriorly on the sides, the greater part of the sides of the lower jaw being 

 witliout teeth. 



Predorsal spine narrow, pungent, without lateral hooks, about three- 

 fourths as long as the eye; dorsal variously falcate, the third ray highest, in 

 extreme cases reaching the caudal, sometimes only two-thirds to tip of 

 adipose ; origin of dorsal a little nearer snout than caudal ; origin of anal 

 about under middle of dorsal, for the most part low, its anterior lobe com- 

 LH>sed of but few rays, the second of the developed rays highest, sometimes 

 reaching middle of caudal; ventrals small, just reaching anal; pectorals 

 small, reaching to above middle of ventrals. 



Scales everywhere regularly arranged except over anal muscles, where 

 the rows are but slightly deflected ; a sheath of two rows of scales on the 

 anterior part of the anal, none on tlie last, the scales in the middle of tlie 

 tin attached to the membranes, in front not attached; caudal lobes scaled, 

 the scales extending a little further on the lower lobe. 



Prolonged rays of dorsal and anal, black. Two faint humeral bars in 

 the darker specimens. 



21. Agoniates anchovia Eigenmann sp. nov. 

 5216 C. M. Type 127 mm., 5217 C. M. Paratyiies, nine, 87-108, mm. Villa 

 Bella. Haseman. 



Head 5 ; depth 4.75-5 ; D. 11 ; A. 31-34 ; scales 5-45 to 48-4 ; eye 1.25 

 in snout, 4.2 in head, 0.8 in interorbital. 



Dong and slender ; head compressed, anchovy-like ; preventral area 



