188 BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



PLATE XXXVI. 



FiCr. 1. Drillia alesidota var. macilenta Dall ; -36.5. 



2. Lampusia 2}harcida DaM; 23.6. 



3. Drillia (Cyviaiosyrinx) MoseriDaM; 30.0. 



4. Daphnella pompholyx Ball; 1"2.5. 



5. Leiicosyrlnx tenoceraa Da,ll; 60.0. 



6. Plcurotomella EdgarianaDa]!', 58.0. 



7. Mesorhytia Meekiana Hall; 15.5. 



8. Tere&ra nassttZa Dall ; 55.0. 



9. Drillia (Cymaiosyrinx) centimala Dall; 22.5. 



10. Drillia (jCyviatosyrinx) CBpynotaDgM; 15.0. 



11. Cordiena 2?o Mawiiii Dall ; 13.6. 



PLATE XXXVII. 



Fig. 1. Caiicellaria {Trigonostoma) SmithiiDall; 10.5. 



2. Calliostoma aurora Dall; lat. 26.5. 



3. Ringicnla nitidaYeTriU; 7.5. 



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



diam. 88.0. 



5. Pleiirotomaria(Perotrochu8) ^Moi/ana Fischer and Bernardi ; major diam. 48.0. 



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



PLATE XXXVIII. 



Fig. 1. Plturotoma (Leiuosyrinx) subgrundif era Ball; 30.0. 



2. Marginella Watsoni Baill; 9.5. 



3. Pleurotoina (Ancisirosyrinx) elegans Ball; 27.0. 



4. Fermetus (Petaloconchus) erectus Ball; 25.0. 



5. Typhis (Truiatsa) longieornis Dall, adnlt; 23.0. 



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



7. Mitra Sicainsotii BvodeTip war. antilhyisis Ball; 80.0. 



PLATE XXXIX. 



Fig. 1. JBushia elegans Ball ; 12.5. 



2. Cetoconcha iullaBaAl; interior of left valve; 13.0. 



3. Cetomya elongata Dall ; left valve ; 22.5. 



4. Verticordia perversa Ball; 5.0. 



5. Cetoconcha bulla Dall ; left valve ; 13.0. 



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



natural size. 



7. Verticordia {Euciroa) eleganiissima Dall; left valve of old individual, natural 



size. 



8. Terebratulina Cailleti Crosse, young specimen considerably magnified. 



9. Eudesia floridanaVowxiales; 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 hsemal valve, natural size, from an 



original drawing by W. H. Dall. 



