Fig. 4 in TWO NEW SPECIES OF MIMAGONIA TES (TELEOSTEI: CHARACIDAE: GLANDULOCAUDINAE), THEIR PHYLOGENY AND BIOGEOGRAPHY AND A KEY TO THE GLANDULOCAUDIN FISHES OF BRAZIL AND PARAGUAY

Fig. 4. Mimagoniates microlepis, unstained central basal region of caudal fin adjacent to caudal peduncle of a preserved adult male, lateral view, left side. anterior at left. SL 51.7 mm, USNM 279876, Brazil, Santa Catarina, rio Itapocú. Illustrates external features of a caudal gland with a complex pump chamber. Arrow at left indicates anterior intake opening. middle arrow indicates lateral slit of chamber and arrow at right designates posterior exit opening of chamber. These openings surrounded by glandular tissue, especially exit opening. Modified dorsal caudal-fin scales appear as rather poorly focused " ghost " images in upper half of picture, above main body of pump chamber.