2i8 British Dnxgonflies. 



^. The wings of the female sometimes have a greenish 

 tinge, causing them to resemble those of C. spleudcns to 

 some extent. 



1). The pterostigma of the female \aries a little in 

 size and distinctness. 



A Caloptcryx Q^^ is somewhat cylindrical, rounded at 

 one end, and having a point, perhaps of attachment, at 

 the other. It resembles Nos. 6 and 7 of Fig. 4. 



Nymph. 



It is difficult to separate the n}-mph of this species 

 from that of its congener, C. spleudcns, described on 

 p. 224, and illustrated at Fig. ^^j. The most reliable points 

 of distinction appear to be the more slender caudal 

 appendages, \\hich are also of nearly equal length. In 

 C. splcndcns the middle one is considerably shorter 

 than the others. In Science Gossip, September, 1894, 

 C. spleudcjis is figured with the appendages unhanded ; but, 

 as a matter of fact, there is little difference between the 

 two species in this respect. The raised plate on the 

 head, too, seems to fail as a distinguishing mark in the 

 empty n)"mph-case ; perhaps, however, in the lixing 

 nymph there may be sufficient difference in the head 

 to help to separate the species. Two dorsal smooth 

 marks on the segments of the abdomen are present in 

 both species, but in neither do they touch the hind- 

 margin of the segment. [A New Forest n)'mph-skin 

 and some young nymphs, presumabh- of this species 

 as C. splcndcns does not appear to exist in the 

 Forest.] 



