ROl \ 



HI. III. 



Doridoxa Ingolflana, Bgh. 



tin- radula, from above </ median teeth, b innermost lateral tooth. 

 ■, parti) lateral view. -/ and b as in Eg. i. 



hi tilth. -/•/ outermost tooth-plate 

 > i ; drawn witli cam. luc • 350 diam. 



Candiella Ingolfiana, Bgh. 



tin masticator) edge of tin- mandible, " the fr< x 200 diam. 



— ;. A 1 I the middle part of the radula, '/ median tooth 



of tlu- largest lateral teeth. 

 The outer end of a series of teeth, '/ outermost tooth. 



Pigs. 5 7 drawn with Cam. Inc. x 350 diam. 

 8 a Seminal vesicle, b its duct. 



Seminal duct, b penis bag with the glans penis situated in its cavity. 



Atthila Ingolfiana, Bgh. 



to. Tin- fore end of tlie body with the oral aperture, tentacles, and fore edge of the foot 



11. The two-lipped sheath of the rhinophore, between the two unequally long lobes the point 

 of the club of the rhinophore is seen. 



12. The central nervous system, drawn with cam. luc. >c 55 diam. a cercbro-pleural ganglia, 



nglia, < buccal ganglia, d the large common commissure, < the buccal commissure. 



— 1 ; v Otocyst x 350 diam. 



14. The bulbus pharyngeus from above, the pharynx removed, so that the tongue is laid bare, 

 n the region of the fore end of the mandibles. 



— 15. The mandibles, from before, a the hinge-part 



— 16. The hinder end of the mandible, x 100 diam. 



17. The hindmost part of the masticatory edge of the same, x too diam. 

 ague, from below, with radula. 

 Median tooth from three series of teeth. 

 20. The first lateral tooth. 



— 21. A similar one in another position. 



a two median teeth, and // first lateral tooth, lateral view. 



The ninth and tenth lateral teeth (counted from the median tooth) of two series. 



ral teeth. 



oth-plates with 5 tooth-plates, a the outermost one. 

 \n with cam. Inc. x 350 diam. 



