566 



BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Trigonium dulce, 165. 



eulensteinii, 149, 161, 166-168, 170 



171. 

 forrnosum, 164, 169. 

 formosum var., 164. 

 frauenfeldii, 169. 

 geminum, 169. 

 gibbosum, 169. 

 heteroporum, 167, 169. 

 inelegans, 169. 

 inelegans micropora, lt>y. 

 inglorium, 169. 

 latum, 165, 169, 170, 171. 

 margaritiferum, 162. 

 membranaceuin, 42, 170. 

 multiplex, 167, 170. 

 pardus, 170. 

 plenum, 162. 

 punctatum, 169-171. 

 quinquelobatum, 171. 

 radfordianum, 150, 171. 

 (Triceratium) radiolatum, 171. 

 reticulum, 171. 

 sculptum, 170, 171. 

 weissflogii, 162. 

 zonulatum, 170, 171. 

 trilingulatus, Actinoptychus, 14, 10. 

 Trinacria, 172. 



limpida, 172, 182. 

 regina, 172. 

 tripedalis, 173, 182. 

 wittii, 172. 

 tripedalis, Trinacria, 173, 182. 

 Tripodiscus, 9. 

 tripos, Biddulphia, 46. 

 triramosa, Aglaophema, 199, 219, 161, 



242. 

 trisinua, Biddulphia, 47, 177. 

 trisulcum, Triceratium, 47. _ 

 tritaeniata, Cochlostyla cincinniformis, 



441. 

 triumphans, Campylodiscus, 7, 55. 



Trochosira, 92. 



Tropidoneis, 16, 59, 71, 173, 175. 



approximata, 173. 



fragilis, 173, 174. 



javanica, 173. 



lata, 174. 



lepidoptera, 174, 175. 



maxima, 174. 



membranacea, 174. 



membraneacea, 173. 



oblonga, 174. 



phantasma, 174, 182. 



vaga, 174, 182. 

 truanii, Plagiogramma, 129. 

 tryblionella, Nitzschia, 128. 

 tuberculata, Goniocidaris (Cyrtocidaris) 



tenuispina, 268-270 (tig.), 271, 272, 



307, 308, 310, 311. 

 tubicola, Nitzschia, 128. 

 tubiformis, Coscinodiscus, 70. 

 tubitheca, Sertularia, 221 

 tubithecum, Synthecium, 199, 2z,l. 

 Tubularidae, 198, 200. 

 tumescens, Biddulphia, 47. 



Nitzschia distans, 8, 126. 

 tumida, Navicula, 89. 



tumida, Scoliopleura, 89. 



Scoliotropis, 144. 

 tumulifer, Amphora, 28, 176. 

 tuomeyi, Biddulphia, 47. 

 turbo, Bulimus (Orthostylus), 433. 

 Cochlodryas, 433. 

 Cochlostyla, 433, 434. 

 Cochlostyla (Helicobuhnus), 433. 

 Cochlostyla (Rhymbocochlias), 434. 

 Cochlostyla cinerascens, 433. 

 Helicobulinus, 433. 

 Helicostyla, 434. 

 Helix, 433. 

 turgescens, Navicula, 123. 

 turgida, Amphora, 28. 



Biddulphia, 47. 

 turgidus, Cerataulus, 43, 44. 

 turriferum, Triceratium, 47, 48. 

 turrigera, Biddulphia, 47, 177. 

 turris, Stephanopyxis, 145. 

 turturinganus, Opisthoporus quadrasi, 



325 326. 

 ultima, Cochlostyla (Hypselostyla) cin- 

 cinniformis, 436, 439. 

 Cochlostyla (Hypselostylus) cin- 

 cinniformis, 436. 

 Helicostyla cincinniformis, 43b. 

 umbracuhnm Goniocidaris, 272, 273. 

 undulata, Melosira, 93. 



Synedra, 160. 

 unduiatus, Actinoptychus, 14, 15. 

 undulosa, Biddulphia, 48, 177. 

 unitaeniata, Cochlostyla cincinniformis, 



441 

 United States Exploring Expedition, 375. 

 urens, Aglaophema, 199, 232, 26b. 

 ustulata, Chrysallis chrysahdiformis, 

 477. 

 Cochlostyla, 470, 477. 

 Helicostyla (Chrysallis), 479. 

 ustulatus, Bulimus, 476 477. _ 



Cochlostyla chrysahdiformis, 47 / . 

 Helicostyla chrysahdiformis, 477. 

 vacillans, Navicula, 124. 

 vaga, Tropidoneis, 174, 182. 

 valida, Nitzschia, 8, 128. 

 valida var., Nitzschia, 8. 

 validum, Plagiogramma, 77. 

 Van Heurckia, 10. 

 van huerckii, Asterolampra, 29. 



Plagiogramma, 41. 

 varaderSana, Cochlostyla (Cochlostyla) 

 hydrophana, 408, 410 

 Obba planulata, 361, 363, 3o5. 

 varians, Bacteriastrum, 56, 57. 



Chaetoceros (Bacteriastrum), ob. 

 Stictodiscus, 150. 

 varicus, Stietocyclus, 146, 181. 

 variolatus, Coscinodiscus, 8, 71, w». 

 vaszaryi, Navicula, 12. 

 velata, Navicula, 124. 

 ventricosa, Achnanthes, 11. 

 ventricosus, Hemidiscus, 80. 

 venulosum, Triceratium, 39, 4b. 

 venusta, Navicula, 124 lhU 

 verdensis, Obba planulata, 361, 3b-, tf/u. 

 vermiculata, Nitzschia, 128. 

 vermiculatus, Echinodiscus, 75, 178. 



