9 • 



the marked character of Caly. bellatula, we are of the 

 opinion that Loven's genus should be retained as a sub- 

 genus for the Oryptonymidve. 



In 1846, McCoy, in the Synopsis of Silurian Fossils 

 of Ireland, (pi. iv, fig. 15) represents the Encrinurus 

 Stokesii. This species is a synonym of C. punctatus. 



In 1847, Dr. Volborth, in the Verhandl. des Mineral. 

 Gesellsch., zu St. Petersb., (p. 10, pi. i, fig. 1-4) de- 

 scribes and figures 2,ethu^ bellatula. This species is 

 referred by Eichwald to Crypt. Wcerthii. 



Corda, in Prodrora einer Monographic d.Bohmischen 

 Trilobiten, 1847, on p. 206, jjI. v, fig. 52, takes for the 

 type of his genus, Atraclojiyge, the C. verrucosa, Dalm. 

 This genus, owing to Pander's imperfect description 

 of Zethus, will probably form a sub-genus for the 

 Crypto nym ida; . 



During tlie same year the Palaeontology of New York, 

 vol. i, appeared with a description of Oeraurus vigilans. 

 This fossil is figured on pi. Ixv, fig. 2a-g. 



In 1848, Salter described the following species in the 

 Memoirs of the Geol. Sur., Great Britain, vol. ii, part 2, 

 viz : Cybele sexcoslata. (PI. viii, fig. 10 — not fig. 9.) 



Kutorga advocates the rightful claim of priority for 

 the genus Gryptonymus over Encrinurus, and recom- 

 mends the adoption of Eichwald's genus instead of 

 Encrimirus. (Trans. Royal Mineral Soc, of St. Peters- 

 burg, 1848.) 



In 1849, Dr. Volborth, in the Bull, de la Soc. des 

 Nat., de Moscow, published an article on the genera 

 Zethus and Cryptonynius. 



In the Quarterly Geological Journ., vol. vi, pi. xxxii, 



