186 BULLETIN- 37, UNITED STATES N.VIIONAL MUSEUM. 



PLATE XXX. 



Fig. 1. Pleuroiomaria Adansoniana C. & F. Redrawn by McConnell from water- 

 color sketch from life by J. H. Blake. The shell is merely indicated. 



2. Anterior termination of gill iu F. Adansoniana. a, osphradium ; i, blood 



sinus (?). Ouly the inner series of gill lamellae is here indicated. At this 

 part of the gill they are nai row and pointed ; farther back they become 

 broader and more rounded at the distal end. 



3. Posterior free termination of intestine (o) lying on the glanduhir (renal ?) 



organ, behind which iu the commissure are two orifices on each side (a), 

 with a short bunch of papillae behind them and the flaps of the mantle 

 with their papilose edges (b) corresponding to the edges of the sinus on 

 each side. 



4. Another specimen. 



5. The first specimen crawling. 



6. The head, viewed from above. • 



PLATE XXXI. 



Fig. 1. Pleurotomaria Quoyana F. & B. Rhachidian and lateral teeth much mag- 

 nified. 1 b, one of the outermost unciui ; 1 c, one of the inner tricuspid 

 uncini greatly magnified. 



2. Propilidium ancyloide Forbes. Transverse row of teeth from above. 2 b, 



rhachidian aud lateral teeth in profile; 2 c, jaw. All much magnified. 

 Scandinavia and Britain. 



3. Pleurotomaria Adansoniana C. & F. Separated teeth numbered iu their 



order from the rhachis; o, rhachidian tooth. 



4. General view of a single transverse row of teeth. 



5. Same, a single tufted uncinus; H-- 



6. Same, end of tufted uncinus; ^^a. 



7. CooGulina spinigera Jeffreys. Penis from above magnified. 



8. Cocculina spinigera Jeffreys. Head from above, showing tentacles and posi- 



tion of penis at the side of the right tentacle, magnified. 



9. Rhachidian tooth of C. spinigera. 



10. Scutellina antillarum Shuttlevvorth. Showing rhachidian tooth laterals and 



consolidated uncini of one side of a single transverse row of the radula; 



1 • 



11. The same, a single separated uncinus. 



PLATE XXXII. 



Fig. 1. Calliostoma (Eutroclius) cinciellwm Dal\; 8.0. 



2. Pleu7'otoma perincelida'Dsdl; 40.5. 



3. Calliostoma (Eucasta) indiana Daill; 7.G. 



4. Calliostoma {Eutrochus) cinctellum Dall ; 9.5. 



5. Calliostoma (Eucasta) Indiana DaM; 8.5. 



6. LioHa (Lippistes) acrilla Dall; 4.3. 



7. Calliostoma (Eutrochus) Benedicti Dall ; 18.0. 



8. Margarita (BaOifjmophila) euspira Dall; alt. 5.75; max. diam. 7.0. 



9. Liotia (Lippisies) amaMlis Dull; 5.0. 



10. Pleurotomaria Adansoniana C. & F. ; 35.0. 



11. Liotia (Lippistes) acrilla Dall ; 4.3. 



12. Liotia (Lippistes) amabilis Dall; 5.0. 

 12 a. Nassarina Grayi Dall ; 12.0. 



