Occasional Papers of the Miiseiun of Zoology 15 



This species occurs in the Cauca Valley, and I am at a loss 

 to explain its absence at Cristalina, where caja, capitalis, 

 mucropus, and min'mfa occur, when the stream at San Pedro 

 Sula, almost identical in character with some of the Cristalina 

 streams, has the same identical Hetaerina fauna, except that 

 crncntata replaces caja. This is especially puzzling since 

 cruentata seems a more adaptable species than caja. 



The Santa Marta (Cincinnati) specimens are distinctly 

 larger and have darker thoraces than any of the other speci- 

 mens. The altitude at which we found this species at Cin- 

 cinnati and our failure to find it nearby at lower elevations, 

 though it is found at a much lower elevation to the north in 

 Honduras, indicates that in the Santa Marta Mountains an 

 isolated colony of the species is working out its destiny along 

 new lines. The Santa Marta males vary from abdomen, 

 39-43, and hind wing, 30-34, but we found only one this small, 

 as the average size is abdomen ^bout 42 and hind wing about 

 33, about the size, by the way, of the Colombian specimens 

 Hagen called lincata. Bogota and Cauca specimens do not 

 differ from Central American specimens, and among these the 

 males measure, abdomen about 35 and hind wing about 26. 

 6. Hetaerina dominula Hagen. 



British Guiana, Rockstone (8, 11), Tumatumari (8, 11, 12), Wis- 

 mar (11, 12). 



In some highly colored males, in which the basal red area 

 of the wings is strongly developed, the front wings, as well 

 as the hind wings, have a well-defined, distinct apical red spot, 

 but this is smaller than the corresponding spot in the hind 

 wings. Males evidently slightly teneral have the apex of the 

 ^ front wings clear and the apex of the hind wings without a 

 trace of red, but slightly brown-clouded. In some adult males 

 the red tip of the hind wings is narrowly black or dark-edged 

 apically. 



