210 



Forty-third Report on tbe State Museum. 



Order Inarticulata. 



Family LiuGULiDiE. 



Genus. 



1. Lingula, Bruguiere, 1792. 



2. Dignomia, Hall, 1871. 



3. Glossina, Phillips, 1848. 



4. Lingulepis, Hall, 1863. 



9. Obolus, Eichwald, 1829. 



10. Obolella, Billings, 1861. 



11. Dicellomus, Hall, 1871. 



12. Leptobolus, Hall, 1872. 



13. Schmidtia, Volborth, 1869. 



14. Neobolus, Waagen, 1885. 



15. Mickwitzia, Schmidt, 1888. 



16. Monobolina, Salter, 1865. 



5. Lingulella, Salter, 1866. 



6. Barroisella, gen. nov. 



7. Lingulops, Hall, 1871. 



8. Lingulasma, Ulrich, 1889. 



Obolid^. 



17. Aulonotreta, Kutorga, 1848. 



18. Acritis, Volborth, 1869. 



19. Elkania, Ford, 1886. 



20. Spondylobolus, McCoy, 1852. 



21. Paterula, Barrande, 1879. 



22. Schizobolus, XJlrich, 1886. 



23. Discinolepis, Waagen, 1885. 



SlPHONOTRETID^. 



24. [?] Kutorgina, Billings, 1861. 



25. Schizopholis, Waagen, 1883. 



26. Volborthia, M511er, 1874. 



27. Iphidea, Billings, 1874. 



29. Acrotreta, Kutorga, 1848. 



30. Acrothele, Linnarsson, 1876. 



31. Linnarssonia, Walcott, 1885. 



32. Discinopis, gen. nov. Matthew. 



33. Mesotreta, Kutorga, 1848. 



34. Siphonotreta, Verneuil, 1845. 



35. Schizambon, Walcott, 1884. 



36. Keyserlingia, Pander, 1861. 



37. Helmersenia, Pander, 1861. 



DlSCINICE. 



38. (?) Discinisca, Dall, 1871. 



39. Orbiculoidea, D'Orbigny, 1847. 



40. Schizotreta, Kutorga, 1848. 



41. Lindstromella, gen. nov. 



42. (Ehlertella, gen. nov. 



43. Koemerella, gen. nov. 



44. Trematis, Sharpe, 1847. 



45. Orbicella, D'Orbigny, 1847. 



46. Schizocrania, Hall and Whit- 



field, 1875. 



Trimerellid^. 



47. Trimerella, Billings, 1862. 



48. Monomerella, Billings, 1871. 



49. Ehinobolus, Hall, 1871. 



50. Dinobolus, Hall, 1871. 



51. Conradia, Hall (MS.), 1871. 



52. Gotlandia, Dall, 1870. 



53. Obolellina, Billings, 1871. 



54. Lakhmina, Ozhbest. 



Craniad^. 



55. Crania, Retzius, 1781. 



56. Orbicula, Cuvier, 1798. 



57. Criopus, Gray, 1821. 



58. Crauiella, CEhlert., 1888. 



59. Cardinocrania, Waagen, 1885. 



60. Pseudocrania, McCoy, 1851. 



61. Palseocrania (Eichwald), Quen- 



stedt, 1871. 



62. Choniopora, Schauroth, 1854. 



63. Craniops, Hall, 1859. 



64. Pholidops, Hall, 1860. 



