NOTES ON SOME BRITISH NUDIBRANCHS. 381 



5. Lamellidoris pusilla. Inner tooth. 



6. Lomanotus genei. A marginal jjapilla. 



7. Lomanotus genei. Teeth, a. a. a. from the middle of the radula ; b. b. further 



from the middle ; c. still further from the middle. 



8. Lomanotus genei. Edge of jaw with denticulate scales. 



9. Lomanotus marmoratus. a. b. teeth ; c. a large papilla. 



10. Hancockia dactylota. A row from the radula. a. median tooth ; b. b. laterals. 



11. (Plate XII.) Hancockia dactylota. Diagram of the digestive system. The 



intestine and upper part of the stomach are drawn in yellow, the rest of 

 the digestive system in black. a. oesophagus ; b. b. diverticulum on 

 a'sophagus ; c. stomach; d. intestine; e. anus; /. /. anterior diverticula; 

 g.^-g.* branches supplying the cerata ; /*. secondary ramifications in the 

 cerata existing on all the main branches, but only draw n here ; i. pos- 

 terior prolongation of the stomach. 



12. (Plate XII.) Hancockia dactylota. Transverse section through the anal papilla 



and renal opening, a. intestine ; 6. stomach ; c. d. anterior diverticula ; 

 e. anal papilla ; /. kidney ; g. renal orifice ; h. heart ; i. blood lacunse ; 

 k. pericardium ; I. hermaphrodite gland ; m. duct of albumen gland ; 

 n. two lobes of hermaijhrodite gland. 



13. (Plate XII.) Hancockia dactylota. A longitudinal section through one of the 



cerata. a. the intestine running forward ; 6. (jcsophagus ; c. anterior liepatic 

 diverticulum ; d. d. branches of ditto within the cerata ; e. external orifice 

 of one of these branches and cnidopore (?) ; /. blood lacuna; ; g. kidney. 



14. Doto yinnatifida, var. iiapillifira. A rhinophore sheath with papillae. 



15. Coryphella beaumonti. a. central tooth ; b. lateral tooth. 



16. Coryphella beaumonti. Cones from the penis. 



17. Amphoriiia aurantiaca. Teeth. 



18. Amphorina olivacea. a. a tooth. 



19. Amphorina olivacea. End of penis with stylet. 



20. Calma glaucoides. Radula. From a microphotograph. 



21. Calma glaucoides. Diagram of digestive system, a. a. a. the gut and its 



prolongations into the cerata ; b. integuments of body and cerata ; c. buccal 

 mass, § hermaphrodite gland ; d. stomachic dilatation. 

 22 Calma glaucoides Renal organ (shown in black) with the heart and pericar- 

 dium (shown in red), r. o. renal orifice ; vent, ventricle ; aur. auricle ; 

 pc. pericardium ; r. p. o. reno-pericardial orifice. 



23. Janolus hyalinus. A tooth. 



24. Janolus flagellatus. a. median tooth seen from side ; h. a lateral tooth. 



25. Alderia modesta. A tooth. 



26. Alderia modesta. Diagram of digestive system, a. oesophagus ; b. intestine ; 



c. anal papilla ; d. d. anterior diverticula ; e. stomachic pouch ;/./. posterior 

 diverticula. 



27. Alderia modesta. Diagram of reproductive system, a. ducts of hermaphro- 



dite gland ; 6. bifurcation of the male and female branches ; c. prostate ; 



d. vas deferens ; e. penis ; /. a pouch wliich is probably the spcrmatotheca ; 

 g. the duct of tlie albumen gland ; h. the albumen gland ; i. main channel 

 of the female organs, which should probably be regarded as the uterus pass- 

 ing through a mucus gland. The hermaphrodite portion of the organs is 

 coloured orange, the male portion bhick, and the female red. The arrow 

 indicates the \m\\l at which the section represented in Fig. 29 is cut. 



