Fig. 1. 
Fig. 2. 
Fig. 2a. 
Fig. 3. 
Fig. 34. 
Fig. 4. 
Fig. 5. 
Fig. 54. 
Hig. 53. 
Fig. 5¢ 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig; 42. 
Fig. 12. 
Fig. 124. 
Fig. 128. 
Fig. 13. 
Fig. 134. 
Figs. 14, 144. 
Al. Ga. 
B. 
m. 
Gen. ap. 
h. 
NN 
o ® 
Yunns. ® 
DESCRIPTION (OF PLATE edly (VOL: I) 
MOLLUSCA. 
PHILONESIA BALDWINI Ancey (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. 
Jaw. 
Centre and two side teeth of radula. 
Median teeth, 7th—rrth. 
Lateral teeth, rgth—22nd. 
Eleven of the outermost, or marginal, teeth. 
GODWINIA CAPERATA Gould (p. 277). 
Animal with shell removed, showing dorsal lobes. 
Portion of mantle zone, near respiratory orifice. 
Extremity of foot. 
Buccal mass, and salivary gland, Xc. 
Sole of foot. 
Jaw. 
Central tooth of radula. 
Fifth intermediate, and following lateral teeth. 
Outermost, or marginal, teeth. 

Leptachatina acuminata Gould. Central teeth of radula (p. 357). 
Intermediate and marginal teeth. 
Ancylus sharpi, sp. nov. (p. 394). 
EXPLANATION OF THE LETTERING. 
albumen gland. | pr. prostate. 
muscle of buccal mass. vr. @. tl. right dorsal lobe. 
generative aperture. vr. m. P. retractor muscle of penis. 
hermaphrodite duct. 7. s. ¢. right shell lobe. 
intestine. | Sal. gid. salivary gland. 
left dorsal lobe. st. stomach. 
left shell lobe. v. @. vas deferens. 
male organ. 

The numerical digits in smaller type indicate the tooth figured, reckoning from 0, the central tooth. 
All figures (except 14, 14 @) are from dissections and drawings made by Lt.-Col. H. H. Godwin-Austen, F.R.S. 
