42 Cicinddxz of Massachusetts. 



prises such as have three teeth on the edge of the labmm, 

 and the thorax contracted behind. In the second are 

 placed those which have one prominent tooth only, on 

 the labrum ; the thorax almost square and flattened above, 

 but slightly widened behind, especially at the angles. 

 They live in places where salt water occasionally reaches 

 them. In the third group are placed the other species 

 with only one tooth on the labrum, and with the thorax 

 nearly cylindrical, sometimes elongated. 



f Labrum with three teethy thorax contracted behind. 



1. CiCINDELA GENEROSA. 



above 



ceous ; lateral margin, entire humeral and terminal lunule, 

 and intermediate refracted, inflexed band, white. 



L 



fourth of an inch. 



Plate III. Fig. 2. 



Dejean", Spec, des Coleopt. V. 231. 



C. latecincta, Leconte, MSS. 



Head cupreous, varied with violet ; anterior margin 

 and base of antennae bi 

 prostrated to each side ; veiy distinct rugae encircling the 

 eyes, and a few transverse ones between them ; antennas 

 four basal joints violaceous green, the rest dusky green ; 

 labrum white, w^ith three prominent black teeth on its 

 anterior edge, and five punctures bearing hairs, one at the 

 base of each tooth, and one near each posterior angle ; 

 mandibles black, with two thirds of the anterior and lateral 

 portions white ; palpi dark green ; second joint of the 

 labials white, in the male. 



Trunk cupreous, varied with violet ; bright cupreous 

 and hairy at the sides ; thorax quadrate, somewhat nai- 

 Towed behind ; submarginal, impressed lines brassy ; ele- 



