408 



PATAGONIAN EXPEDITIONS! ZOOLOGY. 



f Kronlchthys subteres Ribeiro; N. du- 



seni, Hemipsilichthys cameroni St. 

 Habitat: Santa Catharina. 



HEMIANCISTRUS Bleeker. 



Type: Ancistrus medians Kner. 

 Range: Amazons north to Veragua; 



Para to western Ecuador and Pacific 



side of Panama. 



1. Hemiancistrus annectens (Regan), 



Regan, 225. 



Habitat: St. Javier and Rio Durango; 

 northwestern Ecuador. 



2. Hemiancistrus medians (Kner), 



Regan, 229. 

 Habitat : Surinam. 



3. Hemiancistrus aspidolepis (Giinther), 



Regan 230. 

 Habitat: Veragua, Pacific slope of 



Panama. 

 A4. Hemiancistrus brachyurus (Kner), 



Regan, 231. 

 H. pictus of Kner, Giinther and Eigen- 



mann, non Castelnau. 

 Habitat: Rio Negro. 



AS. Hemiancistrus scaphirhynchus (Kner), 



Regan, 231. 

 Habitat: Amazons. 

 A6. Hemiancistrus oligospilus (Giinther), 



Regan, 232. 

 Habitat: Rio Capin. 



A7. Hemiancistrus vittatus (Steindachner), 



Regan, 232. 



Habitat : Amazons ; Paraguay. 

 A8. Hemiancistrus bachii (Boulenger), 



Regan, 233. 

 Habitat: Rio Jurua. 



9. Hemiancistrus schomburgki (Giinther), 



Regan, 233. 

 Habitat: British Guiana. 



10. Hemiancistrus bovallii Regan, 



Regan, 1906, 96. 

 Habitat: Upper Potaro, British Guiana. 



11. Hemiancistrus megacephalus ( Giin- 



Regan, 234. 



? Hypostomus itacua Cuvier & Valen- 

 ciennes; Chcetostomus macrops Liit- 

 ken. 



Habitat : Guiana. 



A 1 2. Hemiancistrus platycephalus (Bou- 

 lenger), Regan, 235. 



Habitat : Eastern Ecuador. 



PTERYGOPLICHTHYS Gill. 



Type: Hypostomus duodecimalis Cu- 

 vier & Valenciennes. 

 Range : Paraguay to Magdalena. 



1. Pterygoplichthys undecimalis (Stein- 



dachner) , Regan, 226. 



Habitat: Rio Magdalena. 



2. Pterygoplichthys etentaculatus (Spix), 



Regan, 226. 



Hypostomus duodecimalis Cuvier & 

 Valenciennes; Ancistrus longimanus 

 Kner. 



Habitat : Rio San Francisco. 

 A3. Pterygoplichthys gibbiceps (Kner), 



Regan, 227. 

 Liposarcus altipinnis Gunther; Lipo- 



sarcus scrophus Cope. 

 Habitat: Amazons from Gurupa to 



Nauta. 

 A4. Pterygoplichthys lituratus (Kner), 



Regan, 227. 

 Habitat : Eastern Brazil ; Rio Guapore 



and Amazons. 



AS. Pterygoplichthys multiradiatus (Han- 

 cock), Regan, 228. 



Hypostomus pardalis Castelnau; Lipo- 

 sarcus Darius, Liposarcus jeanesianus 

 Cope. 



Habitat : Amazons and Guiana ; Para- 

 guay. 

 6. Pterygoplichthys anisitsi Eigenmann & 



Kennedy, Regan, 229. 



Ancistrus multiradiatus alternans Re- 

 gan. 



Habitat: Paraguay and southern Bo- 

 livia. 



