INTRODUCTION 
In offering this supplement to the literature of the Paleozoie Crus- 
tacea, the author has brought the list up to date, and corrected some 
errors and omissions in his Bibliography, previously published by the 
California Academy of Sciences. 
The author has consulted the original papers and the bibliographies 
of the following authors: 
1 Gehler (J. C.) De quibusdam rarioribus agri Lipsiensis petrifactis. 
Spec. 1, Trilobites Entomolithus pararadoxus Linne, Lipsiae, 1793, pp. 7-9. 
The author gives a list of works on fossil crustacea. 
2 Walch (J. Hi. T.) Des Trilobites dan le regne des petrifications, ete. 
Natural History of Petrifactions to illustrate Knorr’s Collection. 
Nuremb. fol., part 2; pp. 95 (1768) and part 3, p, 120 (1771). 
The author gives the name of Trilobites to the class and brought together every- 
thing that had been hitherto written on the ‘Trilobites. 
8 Brunnich (M. T.) Beskrivelse over Trilobiten. 
Nye Samlig. of det Kongelige Danske Videnskabers Selskabs Skriften, Kidbenhavn, 
1781, pp. 384-389. 
Gives historical sketch of the papers on ‘T'rilobites. 
4 Burmeister (Hermann). The Organization of Trilobites. 
German Edition, 1843; English Edition, 1846. 
The author gives a Bibliography, pp. VUI-X, 1698-1845. 
® Barrande (J.) System Silurien du centre de la Bohéme, 1852, Tri- 
lobites. 
Vol. 1, and supplement. 
Gives Bibliography of the families. 
6 Toérnquist (S. L.) Undersogningar 6fver Siljansomradets Trilo- 
hitfauna, 
1884, Sveriges Geol. Undersékning, ser. C, No. 66, pp. 4-7. 
Gives list of authors. 
7 Schmidt (Ir.) Revision of the Baltic Silurian Trilobites. 
Mem. Acad. Imp. Sci., St. Petersburg, 1881-1907. 
&) 
Notes on the genera and bibliography. 
8 Holm (G.) De Svenska Arterna af Trilobitslaget Ilaenus. 
Bihang till K. Svenska Vet. Akad Hand]. Bd. 7, No. 3, 1882. 
Gives the Literature on the genus Illaenus, 1853-1872, pp. V-XIV. 
9 Vogdes (A. W.) A Bibliography of Palaeozoic Crustacea from 
1698 to 1889, including a list of North American species and a syste- 
Matic arrangement of the genera. 
Bull. U, 8. Geol. Sur., No. 63, 1890. 
This paper gives a list of authors; also that of the genera, but not that of the species 
described in each work. 
1 C stn " Tee 
The 2d and 3d parts a Catalogue of North American species. 
