XfPHOSUKA. 
Crust. 29 
Parcidoxides acadicu.s, P. lamellatus , P. micmac, Matthew (97). 
Ctenocephalus matthewi, id. p. 103. 
Conocoryphe baileyi (Hartt.), C. elegans (Hartt.), C. ivalcotti, sp. n., id. 
p. 111. 
Mesonacis , g. n., Walcott (155). 
Prestwichia eriensis, sp. n., Devonian, with relations to Limulus and 
Trilobites ; Williams (159). 
Acidaspis emarginata, sp. n., p. 2, JcucTcersiana, sp. n., p. 4, Schmidt (137). 
Lidias , description and figures of the East Baltic species of, including 
the following new ones : L. wesenbergensis , p. 44, L. holmi , p. 54, L. 
huchersiana , p. 67, L. longispina, p. 75, L. plantini, id., L. furdfer, p. 80, 
L. pahleni, p. 97, L. st. mathice, p. 115, L. docens, p. 121, L. hamata, 
p. 124 : Schmidt (137). 
Homalonotus major , sp. n., Whitfield (158). 
Prestwichia rotundata (Woodw.) occurring near Osnabriick ; Bolsche 
( 10 ). 
