8 CALIFORNIA ACADEMY OF SCIENCES. 



no good reason to urge against the conclusion that the Trilobita were an 

 earlier and more generalized type of Crustacea, from which the later and 

 more specialized Isopoda have arisen." 



3d. That the want of feet seems to be a necessary characteristic of their 

 skeleton formation, although this point still remains problematical. 



Bailey (W. H.) On two new species of Crustacea 

 (Belinurus Konig) from the Coal Measures in Queen's 

 County, Ireland; and some remarks on forms allied to 

 them. 



In Kept. 28th Meeting Brit. Assoc. Adv. Sci., 1858, p. 76. 



The author rearranges the genus Belhiurus as a subgenus to Limulun, 

 desbribing two new species iiuder the names of Belinurus regina and B. 

 arciiatus. 



On the annuloid Crustacea of the Coal Meas- 

 ures. 



In Jour. Geol. Soc. Dublin, vol. 8, 1858, p. 89. 



In this paper a description of a fossil Crustacean from the Bilboa Col- 

 liery, Queen's County, was given, with a few remarks on the allied species 

 from Coal Brook Dale, which had been included with it in the genus Limu- 

 lus, and it was proposed to removed all these Coal-Measure Crustacea from 

 that genus and group them into a new one under the name of Steropis. 



Eemarks on some Coal- Measure Crustacea be- 

 longing to the genus Belmurus Konig, with descriptions 

 of two new species from Queen's County, Ireland. PI. 5. 



In Annals. Nat. Hist., 3d series, vol. 2, 1863, p. 105. Translated by 

 Milne-Edwards, Annales Gen. Sc. Pys. Nat., Bruxelles, 1863. 



The author herein describes Belinurus regiiKX, B. arcuatus, B. hellulus 

 Konig, B. rotundus? 



Charles Konig in his work (Icones Fossilium Sectiles, London, 1825) 

 simply mentions the name of Belinurus bellulus in his explanation of pi. 

 18, fig. 230. 



Figures of characteristic British fossils, with 



descriptive remarks. 



Pt. 1, pis. 1-15, Cambrian and Lower Silurian, Loudon, 1867; pt. 2, pis. 

 11-20, 1869; pt. 3, pis. 21-30, 1871; pt. 4, pis. 31-42, 1875. 



Part No. 1 contains description of Calymene tuberculosa and Phacops 

 caudaUis. 



The following fossil Crustacea are cited from the Cambrian: Paheoptjge 

 ramsayi Salter. HyTnenocaris vermicauda Salt. Agnostus principeps, 

 Salt. Paradoxides davidis Salt. Olenus micrurus Salt., O. cataractes 



