118 DRAGONFLIES [CH. IV 



(42) 40. Eyes meeting for short distance only. 



41. JE. ccerulea, Strom. Spots all blue in ^ , paler and inclined 

 to yellow in 9 . Length of < 66'5 mm., 9 5864 mm. 

 Expanse of wings $ 86 87 mm., 9 78 85 mm. 



(40) 42. Eyes with long line of contact. 



(46) 43. Dorsal blue spots on 9th and 10th abdominal segments 

 divided in middle. 



(45) 44. JE. mixta, Latr. Costa of wing brown: suture between 

 nasus and frons not black. Length of $ 61 66 mm., 

 9 62 mm. Expanse of wings $ 83 85 mm., 9 85 mm. 



(44) 45. jE. juncea, Linn. Costa of wing golden ; suture between 

 nasus and frons black. Length of 73'5 76 mm., 

 9 6873-5 mm. Expanse of wings $ 94'5 99 mm., 

 9 9397 mm. 



(43) 46. Spots on 9th and 10th abdominal segments not divided. 

 47. JE. cyanea, Mull. Length of 74 mm., 9 71 74'5 mm. 



Expanse of wings 102104 mm., 9 106 110 mm. 



(39) 48. Abdomen brown, hardly if at all spotted ; wings brown or 

 tawny. 



(50) 49. j&S. grandis, Linn. Accessory membrane of hind-wing 

 small, pale. 2nd abdominal segment with pair of narrow 

 transverse yellow streaks dorsally. Eyes blue in <, 

 brown with bluish sheen in <j> . Length of $ 70 

 76 mm., 9 69 76 mm. Expanse of wings <$ 96 

 101 mm., 9 101104 mm. 



(49) 50. JE. isosceles, Mull. Accessory membrane of hind-wing 

 large, dark ; 2nd abdominal segment with yellow triangle 

 dorsally. Eyes green in and 9- Length of <J 

 67 mm., 9 "70 mm. Expanse of wings <J 91 mm., 

 9 94 mm. [Very rare. Eastern Counties. Early 

 summer.] 



(1) 51. Group II. ZYGOPTERIDES. Front and hind-wings alike in 

 shape ; no accessory membrane present ; when at rest 

 the wings are held more or less completely closed over 

 the back parallel with the right and left sides of the 

 body. The eyes do not meet on the top of head. The 



