106 ILLINOIS BIOLOGICAL MONOGRAPHS [386 



EXPLANATION OF PLATE 



COTYLASPIS COKERI 



l^ntire specimen, extended, dorsal view. X 40. 



Ventral view of entire specimen showing position of marginal organs 



and divisions of the adhesive disc. X 40. 

 Reconstruction of reproductive organs from frontal sections. X 80. 

 Cross section of body at the le\el of the ovary showing the ovary, uterus, 



seminal vesicle, intestine, excretory ducts, and a follicle of the 



vitellaria. X 87, 

 Diagrammatic representation of the excretory system from a li\iii}; 



specimen, dorsal view. X 40. 

 ObIii|Ue section of body just posterior to tlie genital pores, showing in 



section the mouth funnel, pharyn.x, cirrus sac, uterus, septum iiiid 



adhesive disc. X 87. 

 Pig. 5J. Entire specimen, contracted, dorsal view. X 40. 



