THE IMMATURE STATE OF THE ODONATA. 21 



12. ^SCHNA JUNCEA. 



Plate IV. Fig. 1. 

 Linnseus; Selys, Eevue des Odonates, p. 116. 



Three nymphae, male and female, skins, by M. Heyer ; five from J. Boll. 

 Length, 44 m. ; breadth, 8 mm. Locality, Lueneburg, Zurich. Five n3-mpha3 

 raised by Mr. J. Boll, Switzerland. 



Very similar to JE. cyanea, a little shorter. Processes strikingly differ- 

 ent. Anterior only half as large as posterior and much smaller. Granula- 

 tion, color of legs, body, and appendages as in JE. cyanea. The lateral 

 appendages are more slender and more pointed, and the hind angles of 

 occiput more rounded than in JE. grandis. 



The imago has been raised, and the nympha shortly described, by Miss 

 Olga Poljetajewa, 1. c. p. 15. 



13. iESCHNA VIRIDIS. 



Plate V. Fig. 5. 

 Eversmann. Selys, Eevue des Odonates, p. 127. 



Nympha skins, male and female ; and full-grown nympha, dry. Locality, 

 Lueneburg, M. Heyer ; Koeingsberg, H. Hagen. Length, 42 mm. ; breadth, 

 9 mm. 



Similar to JE. rufescens, more slender. Head narrower behind; hind 

 angles of occiput more rounded. Sides of head not so straight. Mask 

 somewhat shorter and broader. Palpus narrower, more convex. Processes 

 nearly equal length, enclosing nearly a right angle ; tips bent outward. 

 Abdomen more slender, imcolored ; lateral spines on segments six to nine. 

 Middle appendage shorter and more notched than in ^E. rufescens ; latei'al 

 superiors short, one lialf length of middle one ; male projection nearly as 

 long as the lateral superiors, conical, tip rather sharp. 



The species was raised by Miss Olga Poljetajewa, 1. c. p. 15. She says the 

 nympha is very similar to JE. juncea, except that the lateral spines of abdo- 

 men are developed as well as in ^E. grandis. 



14. .ffiSCHNA MIXTA. 



Plate V. Fig. 2. 

 Latreille ; Selys, Eevue des Odonates, p. 122. 



Nympha skins, male and female, raised by M. Heyer. Length, 33 mm. ; 

 breadth, 7 mm. Locality, Lueneburg. 



