1902. ] l49 



Sympetrum striolatum, Clip. Very common generally, T. A. C, G. C. C. 



Orthetkum brunnkum, Fonsc. Cuenea and Tragacete, 5 $ , 2 ? , T. A. C. 



Ortiietrum CjERDLescens, F. Cuenea and Bronchales, 5 $ , T. A. C. 

 GOMPHIN^E. 



Onychogomphus uncatus, Clip. Cuenea, 4 £ , 4 $ , T. A. C. ; 1 <j> , G. C. C. 

 The yellow of the body more extended than in northern examples. 



Onyciiogomphus forcipatus, L. Bronchales, 1 $ , T. A. C. This should 

 perhaps be referred to the var. unguiculatus, V. d. L. ; the yellow is more extended 

 than in northern examples, but less so than in those from Algeria. 

 CORDULEGASTRIN^E. 



Cordulegaster annulatus, Latr., var. immacttlifrons, Selys. Cuenea, 

 Tragacete, Bronchales, 14 $ (no ?), T. A. C. Tragacete, 1 $, G. C. C. Among so 

 many males it is curious there should be no female. 

 .ESCHNIN^. 



iEsCHNA cyanea, Mull. Bronchales, 1 ? , T. A. C. 



iEscHNA mixta, Latr. Albarracin, 1 ? , T. A. C. 

 CALOPTERYGIN^. 



Calopteryx splendens, Harris, var. xanthostoma, Chp. Cuenea, Tragacete, 

 7 $ , 8 ? , T. A. C, G. C. C. 



Calopteryx Virgo, L., var. meridionalis, Selys. Tragacete, Bronchales, 

 5 <J , 1 ? , T. A. C. 



Few insects seem more susceptible to local influences than the Caloytery- 

 gince, and these two familiar European species are striking instances. Few insects 

 look more distinct than the northern typical forms of the males of C. splendens 

 and Virgo. But all this is changed as we proceed south, and in South Europe the 

 males have become so much modified as to approach each other in appearance 

 (sometimes occasioning momentary perplexity) ; the females, however, are less sus- 

 ceptible to modifications. 



AQRIONIN^E. 



Platycnemis latipes, Ramb. Toledo, 1 $ , T. A. C. ; 1 ? , G. C. C. Cuenea, 

 1 <J , T. A. C. These three examples are certainly latipes, but they present notable 

 variations. In all the ground colour may be termed white. In the $ from Toledo 

 there is the usual dorsal thoracic black band (divided by the dorsal crest), and a 

 very fine black humeral line ; the abdomen is white to the end of the 6th segment, 

 afterwards dusky with black spots, and there is a fine double ventral black line ; in 

 the ? from Toledo the colours arc much the same, but the white is less pure, and 

 there are traces of a fine double dorsal line ; in the <J from Cuenea there is a second 

 (sub-humeral) thoracic black line abbreviated anteriorly, segments 7 — 10 are nearly 

 wholly black, and there is a solid black ventral line on segments 1 — 6 ; the append- 

 ages are identical in the two $ . This tendency to variation (usually of a dimorphic 

 character) is perplexing in the genus. 



Ischnura Graellsii, Ramb. Cuenea, T. A. C. and G. C. C, many. Albarracin, 

 T. A. C. Lago de Una, G. C. C. 



Enallagma cyatiiigerum, Chp. Lago de Una, 2 $ , 2 ? , G. C. C. In both 

 males the capitate marking of the second segment has no tail, and is scarcely more 

 than a lunule. 



