INDEX 



565 



193-195; leporhinus, 65, 76, 87, 92, 96, 113, 193, 

 195; micropceus, 65, 76, 91, 113, 193, 195; micro- 

 stomias, 65, 76, 113, 192, 193; notospilus, 65, 76, 

 92, 113, 193, 195; orestes, 193; stenopeltis, 192; 

 wilderi, 193 



Hemigrammus, Key to the Guiana species of, 331 



Hemigrammus, 4, 112, 255, 330; analis, 80, 114, 332, 

 337; cylindricus, 68, 80, 89, 97, 114, 332, 333; 

 elegans, 331; erythrozonus, 68, 79, 93, 97, 114, 

 332, 333; gracilis, 340; iota, 43, 68, 79, 89, 114, 

 332, 336; micropterus, 69; ocellifcr, 68, 79, 89, 

 332, 335; orthus, 80, 89, 114, 332, 336; riddlei, 

 340; rodwayi, 33, 68, 79, 88, 92, 332, 334; unili- 

 neatus, 68, 79, 92, 331-333 



hemigrammus, Asiphonichthys, 70, 81, 109, 114, 

 403; Phenacocharax, 43 



hemiliopterus, Phractocephalus, 18, 28, 65, 76, 178; 

 Silurus, 178 



Herniodinae, 96, 98, 99 



Hemiodon acipenserinus, 251 



Hemiodontichthys, 222; acipenserinus, 43, 67, 78, 

 88, 250 



Hemiodontinao, 254, 274 



Hemiodopsis microlepis, 275 



Hemiodus, Key to the Guiana species of, 275 



Hemiodus, 254; crenidens, 275; gracilis, 276, 277; 

 immaculatus, 67; maculofasciata, 67; maculo- 

 fasciatus, 88, 89; microcephalus, 277; notatus, 277; 

 pellegrini, 91; quadrimaculatus, 67, 78, 93, 96, 

 275; semitaeniatus, 57, 67, 78, 275, 276; uni- 

 maculatus, 25, 275, 277 



hemiphractus, Callichthys, 216 



Hemiplatystoma, 182; tigrinum, 182 



Hemisorubim, 131; platyrhynchos, 23, 65, 181; 

 platyrhynchus, 181 



hemiuras, Plecostomus, 66, 88, 91, 96, 104, 106, 114, 

 224, 225, 227 



henlei, Carcharias, 28; Trygon, 117 



Heptapterus, 130, 160; colletti, 130; eigenmanni, 

 130; mustelinus, 130; surinamensis, 131 



Heros bimaculata, 495; bimaculatus, 495; cory- 

 phceus, 497; fasciatus, 497; festivus, 498; insignis, 

 498; modestus, 497; severum, 494; spurius, 497 



herzbergi, Arius, 139; Bagrus, 139; Galeichthys, 

 139; Netuma, 139; Selanaspis, 23, 64, 75, 110, 139; 

 Silurus, 139; Tachisurus, 139, 142 



Hetererythrinus salmoneus, 420 



Heterocharax, 110, 113, 258; macrolepis, 70, SI, 1 14, 

 405, 406 



heterodontus, Astatheros, 494 



Heterognathi, 118, 253 



Heterogramrna, 483; corumbae, 507; ortmanni, 72, 

 83, 89, 90, 98, 100, 101, 115, 506; steindaehneri, 

 2, 72, 83, 89, 98, 105, 508 



heterolepis, Plagioscion, 72 



heteropleurus, Pimelodus, 65, 76, 92, 113, 171, 172 

 Hcterosomata, 119, 525 

 hexadactylus, Silurus, 125 



Hexanematichthys, 129; hymenorhinus, 140; mus- 

 telinus, 64; phrygiatus, 64; rugispinis, 64, 75, 110, 



147; surinamensis, 64 

 hiari, 51 



hilarii, Salminus, 70 

 liistrix, Aeanthieus, 17; Trygon, 21 

 Holland, W. J., vii 

 holmi??, Rivulus, 71, S2, 93, 97, 100, 101, 115, 452, 



453 

 Holobrycon, 256; pesu, 26, 69, 80, 89, 90, 97, 369 

 holomelas, Pimelodus, 29, 166; Rhamdia, 35, 65, 



162, 166 

 Holopristw riddlei, 329, 330; ocellifer, 335 

 Holotaxis, 278 



Hoplarchus pentacanthus, 494 

 Hoplerythrinus, 258; unitaeniatus, 25, 70, 81, 89, 97, 



100, 101, 105,418,419 

 Hoplias, 253, 258, 412; macrophthalmus, 20, 25, 70, 



81, 97, 105, 413, 418; malabaricus, 20, 25, 70, 81, 



88, 89, 91, 97, 100, 101, 105, 414, 415; microph- 



thalmus, 413 

 Hopliosoma punctata, 219, 220 

 hoplogenys, Ancistrus, 66, 77, 237, 239, 241; Chaeto- 



stomus, 239; Xenocara, 239 

 Hoplosternum, Key to the Guiana species, 216 

 Hoplosternum, 214; lanigatum, 216, 217; littorale, 



15, 66, 77, 88, 91, 216, 217; longinlis, 218; stevardii, 



217; thoracatum, 17, 24, 66, 77, 88, 104, 216, 218, 



219 

 horridus, Hypostomus, 227; Plecostomus, 227 

 Houri, 418 

 humboldtii, Pastinaca, 116; Potamotrygon, 116; 



Sternopygus, 429 

 humeralis, Cynopotamus, 70 

 Huri, 20 



Hydrocyninae, 258, 411 

 Hydrocynus, 25S; cuvicri, 19, 26, 70, 81, 411 ; lucius, 



411; scombcroides, 396 

 Hydrocyon argenteus, 403; armatus, 20, 410; 



falcirostris, 410; microlepis, 20, 408; scomberoides, 



396 

 Hydrolycus, 396; scomberoides, 26, 70, 81, 254, 257, 



317, 396 

 Hydroscion armatus, 396 

 hymenorhinus, Hexanematichthys, 140 

 Hyphessobrycon, Key to the Guiana species of, 33S 

 Hvphessobrycon, 4, 112, 255; belotti, 69; bifasciatus, 



108; compressus, 338; eos, 69, 80, 93, 97, 114, 339, 



341; gracilis, 43, 69, SO, 89, 109, 338, 340; liitkeni, 



108; minimus, 35, 69, 80, 92, 114, 338, 341; 



