13 



succeeded in catching one, a male, and found that the noise 

 was produced by a rapid lateral movement of the last segment 

 of the body, where a highly specialized organ existed. The 

 claspers, when closed, are shaped like the stem of a decked boat. 

 On the dorsal surface (the deck) are two groups of highly 

 specialized scales, flat, rough or hard forming a file. Along 

 the posterior edge of the preceding segment the scales are also 

 highly specialized, being stiff and shaped like the teeth of a 

 comb. By a lateral movement of the segment that bears the 

 claspers the files are rubbed against the "teeth" of the "comb" 

 and produces a loud noise that can be distinctly heard ten yards 

 away. 



The Younger Stages of Nesodrya.s freycinetiae Kirkaldy. 

 BY OTTO H. SWEZEY. 



This is a delicate pale green little leaf-hopper living on the 

 "ieie" vine {Freycinetia arnotti). The eggs are inserted in 

 the younger leaves at the crown of the growing vine, parallel 

 with the fibers of the leaves, one or two together. The young 

 nymphs are very flat, adapted to crawling between the leaves 

 in the crown of the plant. They also may be found exposed 

 on the surfaces of the outer parts of the leaves, where they 

 might not be recognized as young leaf-hoppers at first sight, 

 on account of their flatness; and their coloration as described 

 below allows them to be mistaken for a bit of dirt or debris. 



The first stage is about 1.25mm. long and about 0.75mm. 

 wide; flattish; head bluntly triangularly produced in front of 

 eyes ; pale green ; sides and front of head, sides of thorax, two 

 apical segments of abdomen (except median dorsal triangle in 

 penultimate segment), femora, basal portion of tibiae and 

 tips of tarsi, dark fuscous ; eyes red ; tibial spurs of hind legs 

 have but one tooth, it and the spines at apex of tibiae and tarsal 

 segments, black-tipped. 



The second stage is about 1.5mm. long; coloration similar to 

 previous stage except that the green portion is not so pale, and 

 has a yellowish tinge. The tibial spurs have two teeth. 



The third stage is about 3.25mm. long; coloration similar 

 to second stage, except that the legs are less fuscous, and the 

 ventral side has a bluish tinge. The tibial spurs now have 

 three teeth. 



Proc. Haw. Ent. Soc, II, No. 1, Oct., 1908. 



