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well-marked lateral lobe. The medial and posterior margins are somewhat 

 indented or crenate. The endopod of the fifth pair has the lateral margin 

 concave and crenate. Exopods I— III and V exhibit the characteristic forms 

 shown in Fig. 1, e-h. 



Fig. 1, a. Trichoniscus demivirgo, dorsal view of female. 



b. " lateral view of head. 



c. " dorsal view of head. 



d. " telson and left uropod. 



e. " pleopod I (Sharon specimen). 

 /. " pleopod II (Sharon specimen). 



g. " pleopod III (Mount Desert Island specimen). 



h. " " pleopod V (Mount Desert Island specimen). 



i. Miktoniscus halophilus, lateral view of head, female. 

 j. " dorsal view of head, female. 



