Cockerell: Scales of Characimd I-'ishes. 95 



Boulcnger has referred Cicriwatus to the CithariniiuT. I give a 

 figure (Plate XXV, fig. 6) of the scale of the African Citharinus 

 congicus Boulenger. It lacks the laterobasal angles of Curhnatus 

 spiluriis, etc. 



Parodontin/e. 



Parodon paragunyensis Eigenmann (cotype). Scales about 3 mm. 

 broad and high, the apex broadly rounded, the laterobasal angles 

 evident, the basal middle very deeply acutely emarginate; radii very 

 strong, usually four apical and three or four basal, the apical more 

 spreading, the radii are attached to a transverse median bar, which 

 may be very short, or one-third of width of scale, in the latter case 

 becoming zigzag; apical margin with an obscure miscroscopic 

 very low denticulation; apical field (space between the apical 

 radii) with a very minute vermiform sculpture, its circuli coarse, 

 about twice as widely spaced as the basal, longitudinal, but in the 

 middle becoming oblique, ineeting in the middle line at a very acute 

 angle; other circuli (lateral and basal) fine, normal, except that in 

 some scales the circuli in the upper part of the basal area are modified 

 into a fine vermiform or labyrinthine pattern. 



Parodon piracicahce Eigenmann. Scales larger and broader, but en- 

 tirely of the same type. The apical circuli meet at a larger angle. 

 These scales are of course of the Alestiform type {cf. Proc. Biol. 



Soc. Wash., XXIII, p. 146.) 



HeMIODIN/E. 



Hemiodiis qnadrimaculatus Pellegrin (from Tumatumari) has been 

 examined. The scales are of a Curimatine type with simple base, 

 usually four strong apical radii, no weak radii, no sign of apical 

 teeth. The laterobasal angles are moderately distinct. The basal 

 margin is not crenate. The dermal pigment-spots are relatively 

 large. 



Anisitsia notata (Schomburgk). The brilliantly silvery scales are 

 considerably larger in the ventral region than in the dorsal, but the 

 sculpture is the same. Latero-basal angles obtuse; nucleus a little 

 basad of middle; circuli fine, transverse in apical field, but usually 

 failing toward the margin; about four to six fine apical radii; basal 

 margin gently convex. All this is practically as in Hemiodus. 



Anostomus anostomiis (Linnaeus). Scales shaped as in Lepormus 

 megalepis and L. nigrotcEniatus, with the same strong midbasal 



