OF MOLLUSCA. 



41 



whorl very large ; mouth large, ovate ; canal suddenly recurved ; 

 outer lip more or less thickened, waved internally ; pillar lip rather 

 twisted, veined (figs. 22, 23). 



Fig. 22. — Dolium perdix, with proboscis exserted and siphon recurved. 



1. D. galea, t. 16. f. 1, t. 93. f. 1. 



2. D. olearium, t. 17. f. 1 ; Adams, Gen. Moll. t. 20. f. 6. 



3. D. perdix, t. 15. f. 1. Teeth (fig. 23). 



Fig. 23. — Teeth of Dolium perdix. 



2. Malea. 



Shell subglobose like Dolium, but outer lip thickened, toothed in- 

 ternally ; pillar-lip thickened, with two or three very large ridges. 



1. M. Pomum,t. 17.f. 2. Teeth ?, Adams,Gen.Moll.t.20.f.7. 



The Malece live under and between stones at extreme low water 

 mark. — C. B. Adams, 298. 



3. RlNGICULA. 



Shell ventricose ; spire short ; mouth contracted, with a notch in 

 front ; pillar-lip thickened, strongly plaited ; outer lip thickened, 

 reflexed. Eyes on the outer side of the base of the subulate tentacles. 

 Operculum none ? — Adams. Teeth ? 



1. R. buccinea. 



