8G4 R. ETHEEIDGE, JEN., ON THE OCCURRENCE OF A 



2. ElBLIOGRArnY. 



1820. Baron von Schlotheiin appears to have been one of 

 tlie earliest authors to describe an organism from Palaeozoic rocks 

 which could, with any thing like certainty, be referred to the higher 

 Crustacea. Under the name of Trilobites problematicus he described 

 a body from the " Cave-limestone" of Gliicksbrunn, and placed it 

 provisionally near the Trilobites *. As this form was afterwards 

 more fully described by Baron von Schauroth and Mr. J. AY. Kirkby, 

 it need not be further referred to at present. 



1839. Dr. Goldfuss described, in his " Beitrage zur Petrefacten- 

 kunde," the curious body to which he gave the name of Bos- 

 trichopus antiquus f. The body is here bilobed, separated into 

 two halves by a constriction ; the posterior half is elongated, and 

 divided longitudinally by a groove. From the anterior half pass 

 four appendages, the two hinder exceeding the anterior in leugth 

 and thickness. From these feet stream out a number of threads or 

 antenna- like jointed processes. 



1840 (?). Professor (then Mr.) Prestwich described, in the ex- 

 planation of the 41st plate illustrating his paper " On the Geology 

 of Coalbrook Dale " :£, a Crustacean from the Coal-measures of that 

 neighbourhood as Apas dubius, regarded by Prof. Milne-Edwards as 

 nearly allied to the recent Apus corniformis. The extinct species 

 was afterwards redescribed by Mr. Salter, and referred to the genus 

 Anthrapalcemon. 



1844. Dr. W. Ick exhibited at a meeting of the Society, May loth, 

 1844, casts of certain Carboniferous Crustaceans, one of which he 

 compared with Eryon §. Mr. Salter afterwards showed that one 

 of these specimens was none other than Apus dubius, Prest. ; the 

 other he referred to the later- described Pygocephalus Cooperi, 

 Huxley. 



1844. As Astacus Phillipsii, Prof. McCoy described an organism 

 which he took to be the remains of the only Decapod then known 

 from the Irish Carboniferous rocks ||. AVe are informed, on the 

 authority of Mr. Salter, that Prof. McCoy afterwards abandoned the 

 notion of the Crustaceous nature of this fossil %. 



1840. In his ' Grundriss der Ycrsteinerungskunde,' Dr. H. B. 

 Geinitz placed BostricJwpus with the Stomapoda **. He gives the 

 Grauwackc slate of Dillenburg as the horizon and locality. 



1847. The name Gampsonyoc fimbriatus was assigned by Dr. H. 

 Jordan to a Crustacean discovered by him in the Sphoerosidcrite of 

 Laibach, at the ironworks of Herr Kramer, at St. Ingbert ft. It was 



* Die Petrefactenkun.de auf ihreni jetzigen Standpunkte, &c. 8\o, p. 41. 



t Nova Acta Physico-rnedica Acad. Cassarere-Leopold. &c. 1830, vol. xix. 

 p. 353, pi. 32. f. 6. 



| Trans. Geol. Soc. 2nd series, vol. v. 



§ Quart. Journ. Geol. Soc. 1845, i. p. 190. 



|| Synopsis Carb. Foss. Ireland, 1844, p. 159. 



% Quart. Journ. Geol. Soc. xvii. p. 532. 



** P. 197. 



tt " Entdeckivng fossiler Crustaceen im Saarbruckcn'sclien Stcinkohlen- 

 gebirge," Verhandl. d. naturhistorischen Vereins d.prcuss. Rheinlande, vol. iv. 

 1847, p. 80, pi. 2. 



