﻿NORTH AMERICAN NOTOSTRACA — LINDER 



41 



Figure 15. — Dorsal view of telson and last two body-rings of a female of Lepidurus lyncki, 



new species, X 18. 



Figure 16. — Three pieces of an incomplete ring at the anterior margin of the telson in a 

 female of Lepidurus lynchi, new species, X 11: a, Dorsal view; b, ventral view. 



Eyes unusually small. Nuchal organ round, elevated to about 

 same height as the small eye-tubercles, and placed clearly behind 

 them; in paratypes more or less rounded form, rather varjdng height 

 but always similar m position. 



Antennae, mandibulae, and maxillae as usual in the genus. 



Pairs of legs 61; in parat}T)es 60-71. Endites 2, 3, 4, 5 on first 

 leg 1, 5, 3.4 and 8 mm., long, respectively; endopodite very short. 



