BIBLIOGRAITIV OK I'A I. F.()'/< )I< ' (RrsTACKA. 51 



Dethleff (von) and Boll (Ernst). Die Trilobiten 

 Mecklenburgs. 



In Archiv. Vereius Freunde Niiturg. Mecklenburg, 185S, j). 155. 

 This article contains a catalogue of species under the following genera: 

 RemopJeurides, Paradoxides, EUipaocephaluii, Okmix, O. (Sph<frophfhnl- 

 inus), Proetus, Cyphanpis, Harpides, Phacops, Cali/mene, Homalonotux, 

 Llchas, Triniicleus, Ampyx, Asaphiis, Ogygki, lUcenus, Nileus, Acidaspis, 

 Vheirurus, Sphcerexochus, Sphcerocoryphe, Amphion, Encrinurus, Bronteus, 

 Telej)hus, Holometopus, Dolichometopus, Agnostus. Lichafi arenswaldii 

 ( Metopias verrucosus Quenst.) n. «p. Cheiruriis kochii n. sp. Agnoslun 

 )i(ijiutus n. sp., A. neobrandenburgensis Boll. — f Bait us pisi/ormis Boll., iu 

 Dunk, et Mej'er Pahieout., 1, xvii, 7). 



Devine (T.) Description of a new Trilobite from the 

 Quebec group. 



In Canadian Naturalist, vol. 8, 1863, p. 95, 2 figs. 

 Loganellus n. g. 



Similar forms have been referred by Corda to the genus Ptyrhopnria. 

 Olenus2 logani n. sp. 



The author also uses for the same species the new name of Loganelhts 

 i/xebecensis. 



Description of a new Trilobite from the 



Quebec group. 



In Canadian Naturalist, vol. 8, IbQ'A, p. "2 10. Hg. 

 Menocephnlus salteri n. sp. 



Dewalque (G. ) Prodrome d'une description geoiogique 

 de la Belgique. Bruxelles, 1868, 2d ed., 1880. 



Contains important list of fossils, and observations. 



Dumont (A. H.) Memoire sur la constitution geoi- 

 ogique de la province de Li^ge. 



In Mem. Cour. Acad. Koy. Sci., Bruxelles, vol. S, 1832, p. 353. Table 

 of fossils. 



Durocher (.1.) Sur le test des Trilobites et des ani- 

 niaux fossils de la Bretagne en general. 



In Bull. Soc. Geol. France, 2d ser., vol.7, p. 307; also vol. ^ 1 >;."wi ,-, | . 

 p. 160. 



Dwight (W. B.) Recent explorations in the Wap- 

 pinger Valley limestone of Dutchess county, New York. 



In Am. Jour. Sci., 3d ser., yoI. 27, 1884, p. .349, pi. 7. 

 Bathyxtrus ? crotalifrons n. sp. 



