SOUTH AMERICAN FISHES: 



45 



dorsal; the aiitei-ior ai:al ray< aiT inu'-li sh. a't t-r : the itriLriii of the d<;r.sal 

 is equidisiaiit fmiii the l)ase of tlio middle caudal rays and the anterior 

 margin of the eye. 



XI. PARECBASIS Eigenmann gen. nov. 

 Teeth tricnsiiid. in a sinirle series on anterior part of mandible and 

 liremaxillary. norie on the maxillary and sides of mandible; an upper 

 mirrow jiart of the m:ixillary heavy, abruptly a thinner, l)lade-liKe ex- 

 ])ai]ded portion eialiiiu- in the convex free marLrin : sides of mandible edge 

 raised: adiim-:- tin well dcxt'li j kmI ; caudal [wirtly scaled: lateral line 

 complete, 



19. Parecbasis cyclolepis Eigenmann sp. nov. 

 o4V~ (". type. 71 mm., ."^'.m; (\ AT. paratyiyc'. SO mm. San Antonio, de Rio 

 Madeira. I'.itK.i. Ilasianan. 



TIead 4: dei 'th I'.T-" : I ). 11 : A. 24; scales 6-38-5; eye 3-|- in the head. 

 e<inal to interorbiral. 



Compressed, fnsifcrm in outline, th.^ dt)rsal and ventral outlines equally 

 synnnetrically curved: la'evcntral area rounded, ^vith a nearly complete 

 median series of 14 scales. ]ii-c(lorsal area rounded, with a median series of 

 ten scales: o'-iiiital process bordered by four scales, extending one-fourth 

 to dor-;al : skull c aivex in cross-section: ^frontal fontanel 4 times as long 

 as the parietal; second suborldtal in contact with both the vertical and 

 horizontal limb of the preopercle. covering entire cheek, maxillary not 

 reachiuLj: to beh w ( yc : mouth clupenid. the premaxillary transverse, with- 

 out an antero-p; -terior extent: teeth minute, confined to the premaxillary 

 and the pcrti(ni cf the man.'lil)le in contact with it when the mouth is closed. 



Origin ot dorsal eiiuidistant from tip of snout and end of adipose or a 

 little nearer the latter: dorsal falcate: origin of anal below last dorsal 

 ray. faintly t marLiinate : <aau-in of ventral below origin of dorsal, just 

 reaching anal, or a little shorter: pectorals short, just about reaching 

 ventrals. 



Scales thin, the margins convex, with many radials: lateral line but 

 little decnrved: anal naked: caudal lobes scaled for one-fourth of their 

 length. 



A small. !iut conspicu; us humeral spot, aliout ecptal to the size of the 

 pui'il. over the fourth scale of the lateral line: a faint dusky streak par- 

 allel vrith the margin in the middle and tipper lobe of the caudal, the rays 

 beyond them dotted. 



20. Fowlerina f ranciscensis Eigenmann sd. nov. 

 5240 C. M. 4\v]ie 72 mm. and 55«il C. M. Paratypes 40-72 nnn. Barreiras. 



Lagoa of Kio (irande. Jan. 3 and 4. 1908. Hasemau. 

 55()<) (\ .AI. l>aratypcs. IS. 4(5-73 mm. Lagoa de Porto. Dec. 24. 1007. 



Hasennuh 



.35t;."i < M. I'arat.^ pes. 4, .Jaozeiro. Nov. 28. 1007. Hasemau. 



5.!07 M. Paratypes. 27. 51-70 nnn. Piropora. Dee. 15. 1907. Hasemau. 



5504 C. M. I'aratypes. 2. 01-03 mm. Cidade do Barra. Dec. 0, 1007. 



Haseman. 



5502 C. M. I'jiratypes. 2. abi ut 2:; nnn. liio (4rande. C'idade do Barra. 

 Dec. 2ti. 1907. Haseman. 



