144 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. VII. 



from fresh water. The collections are interesting as coming from a 

 region in which the fishes are little known. 



Family Siluridfe. 



Rhamdia regani sp. nov. BARBUDO. 



Type No. 60-19, F. M. N. H.; length 93 mm.; Turrialba, Costa 

 Rica. Head 4.6 to 4.8; depth 5.5 to 5.9; D.i-6; A. n or 12. Body 

 elongate; head flattish above covered with smooth skin; lower jaw 

 slightly the longer; width of head 5.8 to 6.5 in body; snout 2.7 to 2.8 

 in head; eye small, 4.7 to 5.1 in head; interorbital 2.6 to 2.7 ; snout to 

 origin of dorsal fin 2.6 to 2.7 in body; occipital process very short; 

 fontanelle present, extending nearly to occipital process, bridge be- 

 tween the eyes ; maxillary barbels short, reaching about to middle of 

 pectoral fin; base of adipose fin shorter than its distance from dorsal, 

 its length 4.6 to 5.0 in body, its distance from dorsal 4.3 to 4.5 in body ; 

 dorsal spine weak; base of dorsal fin 2.2 to 2.4 in head, its height 1.5 

 to 1.6; pectoral spine about % length of fin, its length 2.8 to 3.0 in 

 head; inner edge of pectoral spine denticulate. 



Color greenish olive, head darker, fins all plain. Close to Pime- 

 lodus rogersi Regan. Dr. Alfaro states that one female of this species 

 contained 6500 eggs. Named for Mr. C. T. Regan of the British Mu- 

 seum, who has much increased our knowledge of tropical American 

 fishes. 



Turrialba, 600 meters (12), 75 to 175 mm. ; Rio Tiribi, San Jose (5), 

 92 to 140 mm. 



Rhamdia brachycephalus (Regan). 

 Turrialba (i), 148 mm, 



Family Cypriiiidae. 



Carassius auratus (Linnaeus). FEZ DORADO. 



This species is not a native of Costa Rica. It is the introduced gold 

 fish often seen in aquariums. 



Costa Rica, Pacific side (i), 124 mm.; San Jose" (in captivity) (i), 

 112 mm. 



