WOODWARD : ANATOMY OF VOLUTA, ETC. 



125 



striking in the future when we know more of the anatomy of the 

 Rhachiglossa. 



In conclusion, I can only impress on all collectors abroad the 

 - desirability of preserving the animals as well as the shells, not 

 merely of their new finds, but of the commonest forms, hardly any 

 of which are properly known. 



EXPLANATION OF PLATE X. 



Fig. 1. General dissection of male specimen of Voluta ancilla, with the proboscis 

 retracted. 



2. Anterior aspect of the head, foot, and mantle of Neptuneopsis Gilchristi. 



3. Side dissection of Neptuneopsis, with the proboscis protruded. 



4. General dissection of VolutiUthes abyssieola from the side. 



5. Dissection of the anterior portion of the alimentary canal of VolutiUthes. 



6. Dissection of the tubular salivary glands, showing their median opening 

 into the floor of the mouth in front of the odontophore. 



7. Single transverse row of teeth from the radula of VolutiUthes. 



8. Head of VolutiUthes. a, from above ; b, from below ; c, right side of 

 head, tentacle cut away. 



9. Nervous system of Voluta ancilla, viewed from above, the cerebral 

 commissure cut through and the cerebral ganglia reflected outward. 



10. Similar view of the nervous system of VolutiUthes. 



11. Ditto of the nervous system of Neptuneopsis. 



12. Nervous system of VolutiUthes, viewed from the side. 



13. Nervous system of Neptuneopsis, viewed from the side. 



14. Nervous system of Neptuneopsis, viewed from above. 



Abbreviations. 



a. anus. ot. 



a. a. anterior aorta. ov.d. 



au. auricle. p. 



b.g. buccal ganglion. p.g. 



e.g. cerebral ganglion. r. 



cm. columella muscle. r.a. 



g. gill. r.pl.g. 



k. kidney. r.s.g. 



I. liver. s. 



l.pl.g. left pleural ganglion. sb g. 



m.g. mucous gland. S P9- 



o.c. oesophageal c;ecum. st. 



a. oesophagus. t.s.g. 



op. I. opercular lobe. v. 



os. osphradium. 



otocyst. 



oviduct. 



penis. 



pedal ganglion. 



rectum. 



renal aperture. 



right pleural ganglion. 



racemose salivary gland. 



siphon. 



sub-intestinal ganglion. 



supra-intestinal ganglion. 



stomach. 



tubular salivary gland. 



ventricle. 



