188 BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



PLATE XXXVI. 



FlG. 1. Drillia alesidota var. macilenta Dall ; 36.5. 



2. Lampusia pharcida Dall; 23.6. 



3. Drillia (Cymatosyrinx) Moseri Dall; 30.0. 



4. Daphnella pompholyx Dall ; 12.5. 



5. Leucosyrinx tenoceras Dall ; 60.0. 



6. Pleurotomella Edgariana Dall; 58.0. 



7. MesorJiytis MeeMana Dall ; 15.5. 



8. Terebra nassula Dall; 55.0. 



9. Drillia (Cymatosyrinx^ centimata Dall; 22.5. 



10. Drillia (Cymatosyrinx) cepynota Dall; 15.0. 



11. Cordieria Bouaultii Dall; 13.6. 



PLATE XXXVII. 



FIG. 1. Cancellaria (Trigonostoma) Smithii Dall; 10.5. 



2. Calliostoma aurora Dall; lat. 26.5. 



3. Ringicula nitida Verrill ; 7.5. 



4. Pleurotomaria (Entemnotrochus) Adansoniana Crosse and Fischer; major 



diam. 88.0. 



5. Pleurotomaria (Perotrochus) Quoyana Fischer and Bernardi ; major diam. 48.0. 



6. Gaza Fisclieri Dall, enlarged three-fifths; diameter of specimen, 25.0. 



PLATE XXXVIII. 



FlG. 1. Pleurotoma ( Leiicosyrinx) subgrundifera Dall; 30.0. 



2. MargineUa Walsoni Dall; 9.5. 



3. Pleurotoma (Ancistrosyrinx) elegans Dall ; 27.0. 



4. Vermetus (Petaloconchus) erectits Dall; 25.0. 



5. Typhis (Trubatsa) longlcornls Dall, adult; 23.0. 



6. Leptothyra induta Watson var. albida Dall; 7.0. 



7. Mitra Sivainsoni Broderip var. antillevsls Dall ; 80.0. 



PLATE XXXIX. 



FIG. 1. Bushia elegans Dall ; 12.5. 



2. Cetoconcha bulla Dall; interior of left valve ; 13.0. 



3. Cetomya elongata Dall ; left valve; 22.5. 



4. Verticordia pervtrsa Dall ; 5.0. 



5. Cetoconclia bulla Dall ; left valve ; 13.0. 



6. Terebratula cubensis Pourtales, side view of shell adhering to a bit of coral, 



natural size. 



7. Verticordia (Euclroa) elegantissima Dall ; left valve of old individual, natural 



size. 



8. Terebratulina Cailleti Crosse, young specimen considerably magnified. 



9. Eudesia floridana Pourtales; natural size. 



10. Terebratula cubensis Pourtales; interior of haemal valve enlarged about one- 



fourth, from an original drawing by W. H. Dall. 



11. Eudesia floridana Pourtales ; interior of haemal valve, natural size, from an 



original drawing by W. H. Dall. 



