106 ILLINOIS BIOLOGICAL MONOGRAPHS [386 



EXPLANATION OF PLATE 



COTYLASPIS COKERI 



Fig. 46. Entire specimen, extended, dorsal view. X 40. 



Fig. 47. Ventral view of entire specimen showing position of marginal organs 



and divisions of the adhesive disc. X 40. 

 Fig. 48. Reconstruction of reproductive organs from frontal sections. X 80. 

 Fig. 49. Cross section of body at the level of the ovary showing the ovary, uterus, 



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



vitellaria. X 87. 

 Fig. 50. Diagrammatic representation of the excretory system from a living 



specimen, dorsal view. >< 40. 

 Fig. 51. Oblique section of body just posterior to the genital pores, showing in 



section the mouth funnel, pharynx, cirrus sac, uterus, septum and 



adhesive disc. X 87. 

 Fig. 52. Fntire specimen, contracted, dorsal view. X 40. 



