Plate XIV. 

 Discodoris voniheringi MacFarland. 



Fig. y2. Reconstruction from serial sections showing the mu- 

 tual relations of the principal ducts and cavities within 

 the nidamental-albumen gland complex. The less im- 

 portant branches and all of the secretory alveoli of the 

 glands have been omitted, and are to be thought of as 

 filling the space between the ducts represented and the 

 dotted line, which indicates the external contour of the 

 gland complex, as seen in side view. h. amp., the distal 

 end of the hermaphroditic ampulla as it enters the 

 gland; i. h. a., its intraglandular portion, dilating into 

 /. ch., the fertilization chamber; u. d., uterine duct; 

 /. alb., lumen of albumen gland ; x., duct connecting 

 intraglandular portion of hermaphroditic ampulla with 

 the lumen of albumen gland; alb. d., albumen gland 

 duct connecting the albumen gland with the lumen of 

 the nidamental gland; /. nid., lumen of nidamental 

 gland ; n. d., nidamental duct, cut across as it leaves the 

 gland. The cut end represents the thickness of the epi- 

 thelial lining of the. duct only, x 165, 



Figs. 73 and 74. Ventral and dorsal views respectively of the 

 reproductive complex. All connective tissue, nerves and 

 blood vessels have been omitted for the sake of clear- 

 ness, h. d., cut end of hermaphroditic duct; h. amp., 

 hermaphroditic ampulla; sp. d., spermatic duct; n. g., 

 nidamental-albumen gland complex ; nid d., nidamental 

 duct; vag., vagina; vag. d., vaginal duct; u. d., uterine 

 duct; spth., spermatotheca ; spc, spermatocyst ; pr. g., 

 prostate gland ; v. d., vas deferens ; p., penis ; p. o., ex- 

 ternal opening of praeputium ; v. 0., external vaginal 

 opening; n. d. 0., external opening of nidamental duct. 

 x 36. 



