220 FIELD MUSEUM or NATURAL HISTORY ZOOLOGY, VOL. X. 



TEXT FIGURES. 



1. Diagram showing the peculiar scaling at base of caudal fin of the 

 male of Compsura gorgonce (Evermann & Goldsborough). 



2. Front teeth of Compsura gorgona (Evermann & Goldsborough). 

 (After Evermann & Goldsborough.) 



3. Front teeth of Pseudocheirodon affinis gen. et sp. nov. (After 

 Cheirodon insignis [non Steindachner] Evermann & Goldsborough.) 



4. Distal part of intromittent organ of Gambusia nicaraguensis 

 Gunther. (Greatly magnified.) 



5. Distal part of intromittent organ of Gambusia episcopi Stein- 

 dachner. (Greatly magnified.) 



6. Distal part of intromittent organ of Priapichthys tridentiger (Gar- 

 man). (Greatly magnified.) 



7. Distal part of intromittent organ of Priapichthys dariensis (Meek 

 & Hildebrand). (Greatly magnified.) 



8. Distal part of intromittent organ of Priapichthys panamensis sp. 

 nov. (Greatly magnified.) 



9 . Distal part of intromittent organ of Pasciliopsis elongatus (Gunther) . 

 (Greatly magnified.) 



10. Distal part of intromittent organ of Mollienisia sphenops (Cuvier & 

 Valenciennes). (Greatly magnified.) 



