Occasional Papers of the Museum of Zoology 51 



28. Heteragrion icterops Selys 

 Figures 117, 118 



This species was described by de Selys (i) from a single 

 teneral male from Santarem, Brazil, which lacked the super- 

 ior appendages. This is the type specimen. Later (2) he 

 noted differences and additional characters of the adult male, 

 and briefly described the female from material from Vene- 

 zuela, Ecuador, and Peru. Menger's drawings of a male in 

 the de Selys collection is of one of these specimens, but the 

 drawings do not indicate which one. Were it certain that the 

 specimen figured by Alenger is conspecific with de Selys' type 

 of icterops, I should conclude that inca Calvert is a synonym 

 of icterops. But I doubt very much that the material from 

 Brazil, Venezuela, Ecuador, and Peru, associated by de Selys 

 under the name icterops, is all conspecific. The certain solu- 

 tion of this matter, like other similar questions in the genus, 

 awaits the collecting of more material. 



In de Selys' description (2) the abdominal measurement of 

 the female should certainly be 27 instead of 37 mm., unless 

 de Selys referred a female, certainly not conspecific, to this 

 species. Students should not overlook "additions et correc- 

 tions" to de Selys (2, page 220). 



29. Heteragrion peregrinum, new species 

 Figures 6, 7, 52, 53, 59, 73, 96, 167, 168 



Abdomen, male 30.5 to 35 mm., average 34; female 31 to 

 33.5, average 32 : hind wing, male 20.5 to 23, average 22 or 

 22.5 ; female 23 to 24. 



Male. — Rear of head dingy white; genae and pale mark- 

 ings on face, yellow; labrum light to dark reddish brown, 

 anterior edge and a large round median spot, light orange; 

 rhinarium pale, darker above; nasus black, more or less pale 



