BIBLIOGRAPHY OF PALAEOZOIC CRUSTACEA 65 



The author remarks tliat in definiiii; the diffeietit species of the ^emis Eiicrimirus, use 

 has frequently been made of the tlisposition of the nodes on the joints of the axis of 

 the pygidium. Foerste (listinguislies /:'. thrrshcr'i from /;. ornntus on this characteristic. 

 The author gives the axial annulalions of some 43 specimens from the Quarrv at 

 Mount V^ernon, Iowa. 



O'Connell (.M;irjoi'ic ). Siiiuinai-y of tlic distribution and oceuiTcnce 

 of Eiirypterids. 



Geol. Soc. Am. Bull., vol. 24, pp. 49S-515, 1913. 



Description of some new Silurie (Tastropods. 



Bull. Buffalo Soc. Nat. Sci., vol. XI, 1914, pp. 93-101, plates 1-6. 

 Euryplcrus Riirdrmantii nov. 



The habitat of the Eiirypteri<hi. 



Bull. Buffalo Soc. of Nat. Hist, vol. XI, 1916. 



The author gives a systematic review of the occurrence of the Eur>pterida in each 

 period from tlie Cambrian through the Permic. 



Chapter 2. Resume of the opinions on the habitat of the Eurypterida. 



Chapter 3. The bionomy of the Eurypterid faunas. 



Chapter 4. The I.ithogenesis of the Eurypterid bearing iieds. 



Chapter 5. The geological and geographical distributions of the Eurypterids, with 

 bibliography. 



The conclusion reached by tlie author, after the study of all the available data, is 

 that the Eurypterids throughout their entire phylogenetic history lived in the rivers. 

 Schuchert in the earliest fresh water Arthropods, 1916, remarks that Eurypterids were 

 marine animals previous to the Devonian, and that towards the close of the Silurian 

 they became Eurhaline, or able to live in both salt and brackish water, and after 

 Silurian time they probably became wholly restricted to the fresh water. Proc. Natl. 

 Acad. Sci., vol. 2, 1916, p. 728. 



Oehlert (D. J'.) Siir b's Trinuch'iis (h- I'oiiest dv la l^'ranee. 

 Bull. Soc. CJeol. France, 3rd ser., vol. 23, 1896, p. 299, plate. 



Trillin lens liurcaiti n. sp. The sjiecies is remarkalile for the large tail. The author 

 compares it with T. ornntus, the Bohemian form. 

 T. Grcnicri Berg., T. pon^crnrdi Roualt. 



P'ossiles Devonian Santa Liieia (Espajine). Priniiere partie. 



Bull. Soc. Geol. France, 3rd ser., vol. 23, 1896, p. 299, plates. 

 The author describes Cryphacns suhUinditiiatus DeX'erii. 



Cryphficus (Mallodaia) Lnciac nov. sp. The author gives a figure in the text of this 

 new subgenus, and compares it '.vith Daimanites and Phacops. 

 Crypliaciis Mitnieri Oehlert, and Phacops Portirri Bayle. 

 Cythcrella cf. stibfusiforinis Sandberger. 



T^ralichds h'lhinroi dcs sehistis d'Anjicrs. 



Mem. Soc. C,eo\. France, Palaeontologie, vol. 6, Fas., 1896. 



Resuiiir (h's derniers travaiix siii' 1 'oi'ii'anisatidii el le dcvelope 



ment des Trilol)ites. 



Bull. Soc. Geol. France, ser. 3, vol. 24, 1896, p. 97. 

 Triarllirus Bcckii Green. 



