DESCRIPTION OF PLATK XII. (VOL. II.) 



MOLLUSCA. 



Fig. 



Philonesia BALDWiNi Aticey (p. 281). 



Mantle margin, with shell and dorsal lobes, a, denotes white spots on integument covering 



the branchial cavity. 

 Extremity of foot from left side. 

 Portion of foot showing sole. 

 Genitalia, not quite complete. 



Male organs enlarged, to show the retractor muscle and coiled vas deferens. 

 J aw. 



Centre and two side teeth of radiila. 

 Median teeth, 7th — nth. 

 Lateral teeth, 19th — 22nd. 

 Eleven of the outermost, or marginal, teeth. 



GODWINIA CAPERATA Gould (p. 277). 



Animal witli shell removed, showing dorsal lobes. 



Portion of mantle zone, near respiratory orifice. 



Extremity of foot. 



Buccal mass, and salivary gland, &c. 



Sole of foot. 



Jaw. 



Central tooth of radula. 



Fifth intermediate, and following lateral teetli. 



Outermost, or marginal, teeth. 



Fig. 13. Leptachaiina acuminata Gould. Central teeth of radula (p. 357). 

 Fig. 13(7. Intermediate and marginal teeth. 

 Figs. 14, 14 a. Ancylus sharpi, sp. nov. (p. 394). 



EXPLANATION OF THE LETTERING. 



Al. Gd. albumen gland. 



B. m. muscle of buccal mass. 



Gen. ap. generative aperture. 



//. d. hermajjhrodite duct. 



/. intestine. 



/. d. I. left dorsal lobe. 



/. y. /. left shell lobe. 



P. male organ. 



The numerical digits in smaller tyjie indicate the tooth figured, reckoning from o, the central tooth. 

 All figures (except 14, 14 a) are from dissections and drawings made by Lt.-Col. H. H. Godwin-Austen, F.R.S. 



