ARACHNIDA. 
I— CATALOGUES. 
No catalogue of the North Ainericau forms has so far been published. 
II.— COMPREHENSIVE WORKS. 
C. W. Hahn and 0. L. Koch. — Die Arachniclen. Ntirnberg, 1831-48, 
16 vols. with 563 pi. 
H. Lucas. — Descriptions et figures d’especes nouvelies d’Arachnides. 
Paris, 1835- 7 36. 
0. A. de Walckenaer. — Histoire naturelle des Insectes (Suites a Buf- 
fon). Apteres. Paris, Eoret, 1837-47, 4 vols., with 52 pi. 
The first work ou general classification of this order, and many North Amer- 
ican species are described from drawings by Bose and Abbot. 
N. M. Hentz. — Descriptions and figures of the Araneides of the United 
States. <Journ. Boston Soc. Nat. Hist., Vol. IV-VT, 1842- 7 50. 
These papers form the basis of the study of American arachnology. Numerous 
species are described, but not in synoptic form. 
T. Thorell. — On European Spiders. Part I. Review of the European 
genera of Spiders. Upsala, 1869- 7 70. 
N. M. Hentz. — Aranese America septentrionalis. The Spiders of the 
United States. Edited by J. H. Emerton and E. Burgess. <“ Oc- 
casional Papers” of the Boston Society of Natural History, 1875. 
A reprint of Hentz’s papers on North American spiders. 
Graf Eugen Keyserling.— Amerikanische Spinnen aus den Farni- 
lien Pholcoidae, Scytodoidse und Dysderoidse. <Verh. k. k. zool.- 
bot. Ges. in Wien, Vol. XXVII, 1877, pp. 205-234. 
Graf Eugen Keyserling. — Neue Spinnen aus Amerika. (Six 
parts.) <Verh. k. k. Zool.-bot. Ges. in Wien, Vols. XXIX- 
XXXIV, 1879- 7 84. 
E. Simon.— Les Arachnides de France. Paris, Vols. I-V, 1874- 7 84. 
These two works represent the most recent systems of classification, and are 
therefore of great general value, although they deal only with the Euro- 
pean fauna. 
Lucien M. Underwood. — The Progress of Arachnology in America. 
<Atner. Natur., Vol. XXI, 1887, pp. 963-975. 
A very useful review of the bibliography, with synoptic table of the families 
of the AraneaB. 
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