ElGENMANN : \iw CHARACINS IN CARNEGIE Misiim. 1,.'; 



origin ol anal behind the vertical from the lasl dorsal ray. Ventrals 

 not reaching the anal; pectorals no1 to the ventrals. Straw-colored; 

 ,i fainl silver j band; sides with increasing number of chromatophores 

 from the lateral line upward, very few below the lateral line; .1 con- 

 spicuous humeral bar crossing the third and fourth scales of the 

 lateral line. No caudal spot. 



9. Phenacogaster franciscoens's sp. nov. 

 Plate VI, tig. 3. 



Type. — One specimen, 38 nun. C. M. No. 3231. Boqueiras, near mouth of 

 Rio Porto, Jan. 6, 1908. 



Cotypes. flii t-t • specimens, $7 to 41 nun. ('. M. No. 3232. Same place and 

 date. 



Cotypes.- Three specimens, 27 to 30 mm. (to base of caudal). ('. M. No. 3233. 

 Santa Rita, Sao Francisco basin, Jan. 24. 1908. 



Cotypes. — Bight specimens, 30 to 33 mm. C. M. No. 3234. Barrciras, Lag6as 

 Hi Ki<> Grande, tributary of Rio Sao Francisco, Jan. 14, 1908. 



vy. -Five specimens, .•;<) to 42 mm. C. M. No. 3235. Januaria, Dec. 12, 



Head 3.75 4: depth 2.66 2.75; D. n; A. 3 1 34 : 7 scales 6-35 or 

 36-4; eye 3 in the head, somewhat greater than the interorbital. 

 Maxillary with 25 30 troth ranged along nearly its entire free margin. 

 Premaxillary with two complete, parallel series of teeth. Each series 

 composed of tricuspid teeth toward the inner end and conical teeth 

 toward tin- outer end. The following combinations of teeth have 

 been observed, the first number in each case being tricuspid teeth: 



Outer series 2 + 5, 3 + 4, 3 + 5, 2 + 5. 



Inner series 6 + 2, 5 + 2, 6 + 3, 5 + 5. 

 Gill-rakers 6 4" 8. Origin of dorsal and anal a little nearer to the 

 caudal than to the tip of the snout. A large, conspicuous, black 

 lateral spot, bordered with silvery behind, its center over the fifth or 

 sixth scale of the lateral line. A conspicuous caudal spot, occupying 

 the entire width of the end of the peduncle, continued on the middle 

 rays but usually not to their tips (these markings faint in the speci- 

 mens from Januaria), the litis dark. Base of caudal lobes milky-white 

 I red in Hi' 



Very closely related to P. megalostictus, with which it seems to agree 

 in nearly all characters. P. megalostictus attains a larger size and is 

 a lit tie slenderer. 



7 O: those examined, rive have 31, three have 32, four have 33. and one 3 |. 



