eigenmann: catalogue of fresh water fishes. 



4-n 



Ancistrus Kner. 1 



Thysanocara Regan. 



Type: Ancistrus cirrhosus Kner. 

 Range: Paraguay to Rio Chagres; Rio 

 Grande do Sul. 

 Al. Ancistrus dolichoptcrus Kner, 



Regan 254. 

 Ancistrus tcmminckii E. & E., non Cu- 



vier & Valenciennes. 

 Habitat : Amazon ; Guiana. 

 2. Ancistrus tcmminckii (Cuvier & Valen- 

 ciennes) Regan, 254. 



Habitat: Guiana. 

 A3. Ancistrus hoplogenys (Giinther), 



Regan, 255. 

 Chcctostomus leucostictus Giinther; 

 Chcctostomus alga, tnalacops, tecti- 

 rostris Cope. 

 Habitat: Guiana, Amazons and Para- 

 guay. 

 A4. Ancistrus cirrhosus (Cuvier and Va- 

 lenciennes), Regan, 256. 



Chcctostomus variolus Cope. 



Habitat: Trinidad; Guiana; Amazons; 



Paraguay; Rio Grande do Sul. 

 Ancistrus ancistrus dubius Eigenmann 



& Eigenmann, E. 446. 



Habitat : Amazons. 



1 Doubtful species of this genus are Chcctostomus 

 sericeus Cope and Hypostomus erinaceus C. & V. 



Kner (1853) described the genus Ancistrus to in- 

 clude many species, which he divides into the two 

 groups, Brachypteri, D. I, 7-1, 9, and Macropteri, D. I, 

 u-I, 13. 



Gill (1859) separated the Macropteri under the name 

 Pterygoplichthys, saying: "The genus Ancistrus seems 

 to have been framed with special regard to those fishes 

 to which the name is here restricted, and is by Dr. Kner 

 divided into two sections, which correspond to Ancistrus 

 and Pterygoplichthys, his section a answering to the 

 former genus and b to the latter." 



The species known to Kner and included in his 

 Brachypteri are: Hypostomus cirrhosus C. & V., An- 

 cistrus dolichoptcrus Kner, Ancistrus gymnorhynchus 

 Kner, Ancistrus mystacinus Kner, Ancistrus pictus 

 Kner, Ancistrus brachyurus Kner, Ancistrus scaphirhyn- 

 chus Kner. There can be no mistake as to what Gill 

 meant. 



Gill redescribed the genus Ancistrus, not to restrict 



5. Ancistrus chagrcsi Eigenmann & Eigen- 



mann, Regan, 256. 



Habitat : Rio Chagres. 



6. Ancistrus rothschildi (Regan), 



Regan, 1905. 

 Habitat: Puerto Cabello, Venezuela. 

 A 7. Ancistrus occidentalis (Regan), 



Regan, 257. 

 Habitat: Canelos, "eastern Ecuador. 

 8. Ancistrus brevipinnis (Regan), 



Regan, 257. 

 Habitat: Rio Grande do Sul; There- 

 sopolis. 

 A9. Ancistrus montanus (Regan), 



Regan, 258. 

 Habitat : Eastern Andes of Bolivia. 

 A 10. Ancistrus bufonius (Cuvier & Val- 

 enciennes) , Regan, 258. 



Hypostomus calamita Cuvier & Valen- 

 ciennes; Chcetosiotnus jelskii Stein- 

 dachner. 

 Habitat : Eastern Andes of Peru and 

 Bolivia. 

 Ail. Ancistrus stigmaticus Eigenmann & 



Eigenmann, Regan, 259. 



Habitat: Goyaz to San Matheos. 

 12. Ancistrus lithurgicus Eigenmann MS. 

 Habitat : Crab Falls, Essequibo River. 



it, but as he described or redescribed all of the other 

 genera of fresh-water fishes from Trinidad. 



His description of Ancistrus was either drawn from 

 his specimens of guacharote or from Cuvier & Valen- 

 cienne's (XV, 508) description of guacharote. Gua- 

 charote was known to Kner only through C. & V.'s 

 description and on account " der Ungenauigkeit der 

 Beschreibung ", he was unable to place it with certainty. 

 He thought it might be his mystacinus. 



Regan considers guacharote as belonging to his new 

 subgenus Lasiancistrus. But because Gill's wording of 

 the description applies only to brachyurus and scaphi- 

 rhynchus (and medians') of Kner, Regan considers the 

 latter typical of Ancistrus. Gill's diagnosis based on 

 guacharote, a species not known to Kner and at least 

 subgenerically distinct from brachyurus and scaphi- 

 rhynchus, can have no bearing whatever on the restric- 

 tion of Ancistrus. 



Fortunately Bleeker definitely restricted the name to 

 Kner's first species, cirrhosus. 



