Dragon-flies and Damsel-flies 



95 



or less yellowish at base and along the front margin, and a small fuscous 

 nodal spot, hind wings with a yellowish-black triangular basal spot and 

 fuscous nodal spot ; and L. semi-jasciata, whose complex wing-markings are 



Fig. 127. — The water-prince, Epicordulia princeps, female. 

 (After Needham; natural size.) 



shown in Fig. 126. Tramea is a genus of large swift dragon-flies whose 

 hind wings have the base expanded and conspicuously colored. Tramea 

 lacerala is a familiar species. The water-prince, Epicordulia princeps (Fig. 



Fig. 128. — The amber wing, Perilhemis domilia, male at left, female at right. 

 (.■\fter Needham ; natural size.) 



127), is a common large dragon-fly, but one hard to capture because of its 

 fine flight. The wings show a basal patch, often nearly wanting on the 

 front pair, a patch at the nodus, and a black apex. It likes "ponds or slug- 



