608 ARTHROPODA 



SUB-KINGDOM VII 



cephalon, thorax, and abdomen distinct. Cephalon covered with a shield composed of 

 a primitively pentamerous middle piece, the cranidium, and two side pieces, or free 



Centre de la Boheme. Part I. 1852; Supplement, 1872. Angelin, N. P., Palaeontologia 

 Scandinavica. Part 1. Crustacea formationis transitionis. 1854. Nieszkowski, J., Versuch einer 

 Monographic der in den silurischen Schichten der Ostseeprovinzen vorkommenden Trilobiten. 

 1857. Hojfmann, E., Sammtliche bis jetzt bekanute Trilobiten Russlands. (Verliandl. Mineral. 

 Gesellsch. St. Petersburg), 1857-58. Salter, J. W., A Monograph of British Trilobites (Palaeonto- 

 graphical Society), 1864. Idem and Woodivard, H., ibid. 1867-84. Schmidt, F., Revision der 

 ostbaltischen silurischen Trilobiten (Mem. Acad. Imp. St. Petersburg, vol. XXX., No. 1), 1882. 

 Brdgger, W. C., Die silurischen Etagen 2 und 3 in Kristianagebiet und auf Eker. 1882. Holm, 

 G., De Svenske Arterna af Trilobitslagtet Illaenus (Bihang till K. Svensk. Vetensk. Akad. Handl., 

 vol. VII., No. 3), 1882,Mattheiv, G. F., Illustrations of the Fauna of the St. John's Group. 

 1882-93. Woodward, H., Monograph of the British Carboniferous Trilobites (Palaeontographical 

 Society), 1883. Hall, J., and Clarke, J. M., Palaeontology of New York, vol. VII., 1888. Walcott, 

 d. D., The Fauna of the Lower Cambrian or Olenellus Zone (10th Ann. Kept. U.S. Geol. Survey), 1890. 



B. Structure and Appendages. 



Burmeister, H., Vide ante, 1843. Billings, E., Notes on some Specimens of Lower Silurian 

 Trilobites (Quar. Journ. Geol. Soc., vol. XXVI.), 1870. Woodward, H., Note on the Palpus and 

 other Appendages of Asaphus from the Trenton Limestone in the British Museum (Quar. Journ. 

 Geol. Soc., vol. XXVI.), 1870. Walcott, C. D., Preliminary Notice of the Discovery of the Natatory 

 and Branchial Appendages of Trilobites (28th Kept. N.Y. State Mus. Nat. Hist), 1875. The 

 Trilobite ; New and Old Evidence relating to its Organization (Bull. Mus. Comp. Zoology, vol. 

 VIII.), 1881. Novak, 0., Studien an Hypostomen bohrnischen Trilobiten (Sitzungsber. bohm. 

 Geselssch. Wissensch.), Jahrg. 1879, 1886. Clarke, J. M., The Structure and Development of the 

 Visual Area in the Trilobite Phacops rana Green (Journ. Morphology, vol. II.), 1888. Matthew, 

 W. D., On Antennae and other Appendages of Triarthrus beckii (Amer. Journ. Sci. [3], vol. XLVL), 

 1893. Beecher, C. E., On the Thoracic Legs of Triarthrus (Amer. Journ. Sci. [3], vol. XLVI.), 

 1893. On the Mode of Occurrence, and the Structure and Development of Triarthrus becki 

 (American Geologist, vol. XIII.), 1894. The Appendages of the Pygidium of Triarthrus (Amer. 

 Journ. Sci. [3], vol. XL VII.), 1894. Further Observations on the Ventral Structure of Triarthrus 

 (Amer. Geologist, vol. XV.), 1895. The Morphology of Triarthrus (Amer. Jouru. Sci. [4], vol. I.), 

 1896. Structure and Appendages of Trinucleus, ibid. 1895. 



C. Ontogeny. 



Barrande, J., Vide ante, 1852. Beecher, C. E., The Larval Stages of Trilobites (Amer. 

 Geologist, vol. XVI.), 1895. Mattheiv, G. F., Sur le developpment des premiers Trilobites (Ann. 

 Soc. Roy. Mai. de Belgique, vol. XXIII.), 1889. Vide ante, 1882-93. 



D. Systematic Position. 



Zittel, K. A., Handbuch der Palaeontologie, Bd. II., 1881-85. Grundzuge der Palaeontologie, 

 1895. Lang, A., Text-book of Comparative Anatomy. English Translation by H. M. and M. 

 Bernard. 1891. Kingsley, J. S., The Classification of the Arthropoda (Amer. Naturalist, vol. 

 XXVIII.), 1894. Bernard, H. M., The Systematic Position of the Trilobites (Quar. Journ. Geol. 

 Soc., vols. L., LI.), 1894-95. The Zoological Position of the Trilobites (Science Progress, vol. IV.), 

 1895. Woodward, H., Some Points in the Life-History of the Crustacea in Early Palaeozoic Times 

 (Quar. Journ. Geol. Soc., vol. LI.), 1895. Haeckel, E., Systematische Phylogenie der wirbellosen 

 Thiere (Invertebrata), 1896. Beecher, C. E., Outline of a Natural Classification of the Trilobites 

 (Amer. Jouru. Sci. [4], vol. III.), 1897. Pompeckj, J. F., Ueber Calymmene, Brongniart (Neues 

 Jahrb., Bd. I.), 1898. 



E. Classification. 



Barrande, J., Vide ante, 1852. Beecher, C. E., ante, 1897 .Brongniart, A., ante, 1822. Bur- 

 meister, H., ante, 1843. Corda, A. J. C., and Hawle, J., ante, 1847. Haeckel, E., ante, 1896. 

 Dalman, J. W., Om Palaeaderna eller de sa kallade Trilobiterna. Stockholm, 1826. Milne- 

 Edivards, H., Histoire naturelle des Crustaces. 1834-40. Quenstedt, F. A., Beitrage zur Kennt- 

 niss der Trilobiten (Wiegmann's Archiv. fiLr Naturgesch., vol. III.), 1837. JEmmrich, H. F., De 

 Trilobitis. Dissertation. 1839. Zur Naturgeschichte der Trilobiten, 1844. Goldfuss, A., Systema- 

 tische Ueberschicht der Trilobiten mid Beschreibung einiger neuen Arteu derselben (Neues Jahrb. 

 fur Mineral.), 1843. M'Coy, F., On the Classification of some British Fossil Crustacea, with 

 Notices of new Forms in the University Collection at Cambridge (Ann. Mag. Nat. Hist. [2], vol. 

 IV.), 1849. Chapman, E. J., Some Remarks on the Classification of the Trilobites as influenced 

 by Stratigraphic Relations : with Outlines of a new Grouping of these Forms (Trans. Roy. Soc. 

 Canada, vol. VII.), 1889. Reed, F. R. C., Notes on the Evolution of the Genus Cheirurus (Geol. 

 Mag. [4], vol. IV.), 1896. Blind Trilobites (ibid. vol. V.), 1898. 

 , F. Bibliography. 



Vogdes, A. W., A Classed and Annotated Bibliography of the Palaeozoic Crustacea (Cal. Acad. 

 Sci. Occas. Papers, IV.), 1893. Supplement in Proc. Cal. Acad. vol. V., 1895. See also references 

 under Crustacea. 



