220 Fretp Museum or Natura History — Zoétoey, Vor. X. 
Io. 
TExT FIGURES. 
Diagram showing the peculiar scaling at base of caudal fin of the 
male of Compsura gorgone (Evermann & Goldsborough). 
Front teeth of Compsura gorgone (Evermann & Goldsborough). 
(After Evermann & Goldsborough.) 
Front teeth of Pseudocheirodon affinis gen. et sp. nov. (After 
Cheirodon insignis [non Steindachner] Evermann & Goldsborough.) 
Distal part of intromittent organ of Gambusia nicaraguensis 
Ginther. (Greatly magnified.) 
Distal part of intromittent organ of Gambusia episcopi Stein- 
dachner. (Greatly magnified.) 
Distal part of intromittent organ of Priapichthys tridentiger (Gar- 
man). (Greatly magnified.) 
Distal part of intromittent organ of Priapichthys dariensis (Meek 
& Hildebrand). (Greatly magnified.) 
Distal part of intromittent organ of Priapichthys panamensis sp. 
nov. (Greatly magnified.) 
Distal part of intromittent organ of Peciliopsis elongatus (Gunther). 
(Greatly magnified.) 
Distal part of intromittent organ of Mollienisia sphenops (Cuvier & 
Valenciennes). (Greatly magnified.) 
