INDEX 



573 



Prionodon, 28 



prionomus, Rhinodoras, 190 



Pristella, 255, 329; aubynei, 35, 68, 79, 92, 114, 330; 



riddlei, 33, 68, 79, 88, 92, 330, 331 

 Pristigaster cayanus, 71 

 Pristis pectinatus, 28 

 Prochilodinae, 96, 99, 270 

 Prochilodus, 42, 253; argenteus, 271; binotatus, 20, 



67; brama, 67; insignis, 20, 67; laticeps, 67; 



lineatus, 271; maripicru, 67, 78, 104, 114, 271; 



nigricans, 270; rubrotseniatus, 20, 28, 67, 78, 96, 



270, 271 

 productus, Engraulis, 449 

 profunda, Mcenkhausia, 68, 79, 114, 321 

 proops, Anus, 136; Bagrus, 23; Netuma, 136; 



Sciadeichthys, 23, 64, 75, 106, 110, 135, 136, 137; 



Selenaspis, 139; Tachisurus, 137 

 proteropodes, Siluridae, 214 

 protractila, Bivibranchia, 67, 78, 114, 259 

 Psectrogaster, 253; eiliata, 268 

 Pseudanthicus fordi, 66; serratus, 66 

 Pseudancistrus, Key to the Guiana species of, 233 

 Pseudancistrus, 222; barbatus, 17, 66, 77, 113, 233; 



depressus, 66; guntheri, 66, 233, 235; guttatus, 



233; nigrescens, 54, 66, 77, 91, 92, 96, 114, 233, 234 

 Pseudarioides, 171; albicans, 173; clarias, 172 

 Pseudauchenipterus, 132; camileus, 91; guppyi, 201; 



nodosus, 24, 65, 77, 200, 201 

 Pseudageneiosus brevifilis, 205; davalla, 205 

 Pseudocallophysus ctenodus, 148 

 Pseudodoras niger, 189 

 Pseudohemiodon platycephalus, 243 

 Pseudohypophthalmus fimbriatus, 209 

 Pseudopimelodus, 130; acanthochira, 152; albo- 



marginatus, 64, 75, 92, 95, 113, 152, 153; bufonius, 



152; raninus, 64, 75, 152, 154; villosus, 23, 64, 95, 



113, 151, 152 

 Pseudoplatystoma, 43, 132; fasciatum, 18, 23, 65, 



76, 1S3; tigrinum, 65 

 Pseudorhamdia, 171; ascita, 173; lateristriga, 167; 



ornata, 175; piscatrix, 173 

 psittacus, Batrachops, 528; Chelichthys, 28, 529; 



Cichlasoma, 72; Colomesus, 28, 73, 84, 529; 



Tetrodon, 529 

 Pterengraulis atherinoides, 71 

 Pterodoras granulosus, 184, 185 

 pteroides, Characidium, 68, 78, 89, 107, 114, 2S8, 292 

 Pterophyllum, 483, 520; altum, 73; scalare, 73, 83, 



521 

 Pterygoplichthys, 221 ; duodecimal, 77, 227; multi- 



radiatus, 15, 66, 77, 228 

 pulcher, Microglanis, 155 



punctata, Chromys, 492; Hopliosoma, 219, 220 

 punetatum, Hypostoma, 17 



punctatus, Auchenipterus, 199; Csnotropus, 273; 

 Cataphractus, 220; Chelichthys, 28; Chilodus, 25, 

 67, 78, 88, 89, 104, 273; Corydoras, 57, 66, 77, 89, 

 96, 219, 220; Labrus, 495; Serrasalmo, 19, 386 



pimctifer, Platystoma, 183 



punctulata, Acara, 29, 511; Crenicara, 29, 43, 72, 83, 

 89, 511 



punctulatus, Batrachops, 72, 83, 93, 512; Platyne- 

 matichthys, 65 



Punkay, 353 



pusillus, Aphyocharax, 312 



putaol, Gymnotus, 425 



Pygidiidce, Key to the Guiana genera of. 210 



Pygidiida>, 84, 85, 86, 89, 91, 92, 96, 99, 119, 210 



PygidihiEe, 96, 99, 210, 211 



Pygidium, Key to the Guiana species, 212 



Pygidium, 87, 210, 211; conradi, 66, 77, 91, 92, 96, 

 114, 212; fuscum, 212; gracilior, 66, 77, 92, 96, 

 100, 101, 114, 212, 213; guianense, 66, 77, 92, 96, 

 100, 101, 114, 212; taenia, 66 



Pygocentrus, Key to the Guiana species of, 383 



Pygocentrus, 256; bidorsalis, 385; bilineatus, 69, 81, 

 114, 383, 395; bimaculatus, 92;nattereri, 69;niger, 

 19, 26, 69, 81, 383, 384; nigricans, 26; piraya, 16, 



25, 26, 69, 81, 93, 383, 3S4; scapularis, 69, 81, 383, 

 385; stagnatilis, 69 



Pygopristis, 256 (Cf. Err. el Corr); denticulatus, 19, 



26, 27, 81, 385; fumarius, 27, 385, 386 

 Pyrrhulina, 254, 278; filamentosa, 67, 78, 88, 89, 96, 



100, 101, 104, 279 

 Pyrrhulininae, 96, 99, 278 



quadrimaculatus, Hemiodus, 67, 78, 93, 96, 275; 



Pimelodus, 171 

 quadriscutis, Arius, 138; Netuma, 13S 

 Quavina quavina, 83 

 quelen, Pimelodus, 163; Rhamdia, 65, 76, 92, 96, 



100, 101, 104, 162, 163, 166 



raninus, Batrachoglanis, 151, 154, 155; Pimelodus, 

 23, 151, 152, 154; Pseudopimelodus, 64, 75, 152, 

 154 



rastrifer, Stellifer, 83, 473; Stelliferus, 72, 474 



Rays, Whip-tailed, 116 



regalis, Cynoscion, 466; Johnius, 466 



Regan, Dr. C. T., 3 



Reganella, 222 



regia, Victoria, 32 



reinhardti, Stegophilus, 213 



reticulata, Crenicichla, 512; Pcecilia, 458 



reticulatus, Acanthophacelus, 71, 82, 92, 457, 458; 

 Batrachops, 512; Girardinus, 458 



Retroculus, 500 



retrospina, Brachychalcinus, 374 



