PLATE II. 



" Hariotta " jHtcißca, Mitsukuri. Viscera and Egg case. 



Fig. 9 Body cavity opened, exposing liver, gall-bladder and duct, right ovary 

 (left has been removed), alimentary canal with mesenteric vessels, and 

 oviducts (ovd.). Urogenital opening is indicated at ng. and rectum at r. 



10 Oviduct, right, laid open. c. Central portion of capsular region. /. 

 Capsular gland, showing closely arranged lamellae, m. Marginal portion 

 of capsular region, o.l.o. Opening of left oviduct. 



11 Conus arteriosus, laid open, exposing rows of valves. X about 5. 



12 Egg capsule. X about •?. Oka del. 



12 a Detail of posterior end of egg capsule (dorsal aspect) showing ventilating 

 apertures. 



12 b Detail of anterior end of egg capsule (dorsal aspect), showing mode 

 of opening, the lamellae of the left side having been separated. (This 

 side corresponds to tbe keeled side of the egg case in Chimaera). 



