486 



MEMOIRS OF THE CARNEGIE MUSEUM. 



pusillus, Trichomycterus, 263 

 Pygidiidse, 275 



Appendix to, 371 

 Chronolog}^ of, 270 

 Distribution of, 269 

 A Family of South American Cat- 

 fishes. By C. H. Eigenmann, 259- 

 398 

 First species discovered, 270 

 Generic Names and present equiv- 

 alents, 270 

 Guide to contents of monograph, 395 

 Habits of, 261 

 How distinguished, 259 

 Limits of the family, 276 

 Key to the subfamilies and genera, 



278 

 Location of the types and specimens 

 in the museums of the world 271 

 Phylogenetic Tree showing relation- 

 ship, 277 

 Sources of material examined, 274, 



275 

 Synonymy, 275 

 Zoological position, 275 

 Pygidiina;, 260, 275 



Pygidium : Key to the species from Argen- 

 tina and Paraguay Basin, 291 ; from the 

 Amazon to the Essequibo, 324; from 

 Peru and Western Bolivia, 296; from 

 Southeastern Brazil, 328; from Vene- 

 zuela, Colombia, Panama, Ecuador, 305; 

 from Chile, 290; from Southeastern 

 Brazil, 327 

 Pygidium alternatum, 327, 328, 336 

 amazonicum, 325, 326 

 banneaui, 307, 318 

 barbouri, 274, 297, 303 

 bogotense, 306, 315, 316, 318 

 borellii, 294 



brasiliense, 295, 327, 329, 336, 337 

 cahense, 306, 311 

 chapmani, 305, 309 

 conradi, 325 

 corduvense, 292 

 davisi, 327, 331, 334 



Pygidium dispar, 297, 299 



dorsostriatum, 290, 307, 320 



eichorniarum, 295 



eigenmanni, 297, 298 



fassli, 298, 303 



fuscum, 288, 296, 298 



goeldii, 327, 328, 337, 339 



gracilior, 325, 326 



guianense, 325 



hasemani, 325, 326 



heterodontum, 296 



iheringi, 327, 328, 330 



immaculatum, 327, 328, 334 



itatiays, 327, 329 



kneri, 290, 306, 314 



laticeps, 305, 307 



latidens, 306, 312 



latistriatum, 307, 318, 321 



marmoratum, 290 



merida^, 290, 306, 315 



meta?, 290, 295, 306, 312 



minutum, 327, 329, 340 



nigricans, 289, 327, 328, 329 



nigromaculatum, 306, 316, 317, 318 



croya;, 284, 296, 298, 304 



palleum, 291 



paolence, 327, 328 



poeyanum, 297, 302 



proops, 295, 327, 331 



parahybse, 332 



punctatissimum, 327, 329, 340 



punctulatum, 297, 300 



quechuorum, 298, 305 



regani, 307, 323 



reinhardti, 327, 328, 333 



retropinne, 306, 307, 324 



riojanum, 295 



rivulatum, 289, 297, 300, 301 



santse-rit£e, 327, 329, 341 



spegazzinii, 294 



spilosoma, 307, 319 



stellatum, 305, 308 



stramineum, 306, 313 



striatum, 306, 307, 321, 324 



taczanowskii, 289, 297, 300 



tsenium, 305, 310 



