io8 University of Michigan 



Pr.ATE XIII 



Naiwstrcptiis astix, sp. no v. 

 Pig. 85. Caudal end of body, dorsal view, x 17. 



Nanostrcptns gracilior, sp. nov. 



Pig. 86. Collum, etc., lateral view, x 30. 

 Pig. 87. Anal scale, x 60. 



Epistreptus custriatus, sp. nov. 



Pig. 88. Collum, etc., lateral view, x 13. 



Pig. 89. Caudal end of body, ventral view, x 13 



Spirostrcptns atoponis, sp. nov. 



Pig. 90. Collum, lateral view, x 17. 

 Fig. 91. Anal scale, x 17. 



