Tabanidae. 



91 



pupa and the development of tlie imago takes place in llie foUowing 

 spring or summer. 



The species of Chrysops are especially found in tlie vicinity of 

 water, and sometimes abound there. The females attack cattle and 

 also man. Of the genus .30 species are known from the palæarctic 

 region of which 5 (6) hitherto have been found in Denmark. 



As said the eyes of tlie C^ryso^js-species are golden green with 

 l)urplish spots. The shape and arrangement of these spots bears some 

 interest. In the four of our species, sepulcralis, quadratus, relictus 

 and coecutiens, the arrangement is chiefly the same (Fig. 31). The 



Fig. 31. C. coecuHens, eye of male and female. 



d" 9 



Fig. 3% C. rufipes, eye of male and female. 



females have a band along the hind- and under margin with an 

 incision in the middle, three more or less roundish or oblong spots 



near the front margin and a more or less triangular spot in the 



middle between the excision and the middle front spot purplish. In 



the male the excision of the band Mes more downwards, just at the 



