BIBLIOGRAPHY OF PAL/EOZOIC CRUSTACEA. 193 



The description of all the species, with the exception of Ampyx nmhis, 

 was made by J. W. Salter. 



Pkacops caudaius Briinn. var. (a) vulgaris, var. (h) longicaudatus . 



Other British species of Phacops of the section Dalmania. 



Phncops STp.l P. ohtusi-caudatus Salt., P. trnncato-caudatus Portl., var. 

 (b) ajfbiis Salt. 



Subgenera: 1, Portlockia. 2, Phacops. 3, Dalmania. 4, Cryphihus 

 Green ( Pleiiracanthus Milue-Edw.) 



Ulcenus davisii Salt., /. bowmanni Salt., I. portlocki Salt., /. perovalis 

 Murch., /. ocularis n. sp., /. murchisoni Salt., /. barriensis (subgenus 

 Bumastiis). Asaphustyrannus Murch. Ogygia buchiiBTong., . j)ortlockii 

 Salt. Calymene tuberculosa Salt. Olenus micrurus Salt. Ampyx nudus 

 (Murch.) Forbes, A. tumidus Forbes, also mentions Ampyx austini Portl., 

 A. mammillatus Sars., A. sarsii Portl., A. rostratus Sars., A. parvulus 

 Forbes, A. bruckneri Boll., ..4. portlockii Barr. 



Description of Pterygotus problematicus Agass. 



In Quart. Jour. Geol. Soc. London, vol. 8, 1852, p. 386, pi. 21. 



Notes on the Trilobites. 



Appendix C to an article by Senor Carlos Eibeiro on the Carboniferous 

 and Silurian formations of the neighborhood of Bussaco, in Portugal. 



In Quart. Jour. Geol. Soc. London, vol. 9, 1853, p. 158, pi. 7. 



Calymene tristani Brong., C. arago Eouault. Asaphus guettardi Brong., 

 A . desm,aresti Bvong. Asaphus s'p.l Illcenus giganteusBuTva. Placoparia 

 zippei Boeck ? Trinucleus pongerardi Rouault. Ogygia f glabrata n. sp. 



On Arctic Silurian fossils. 



In Quart. Jour. Geol. Soc. London, vol. 9, 853, p. 312. 

 Encrinurus lavis Ang.? Proetus sp.? Leperditia balthica His. 



Figures and descriptions illustrative of British 



organic remains. Decade 7. 



In Mem. Geol. Survey United Kingdom, London, 1853, 10 pis. 



The genera are arranged in the following order: Phacops doivningioi 

 Murch. Sec. Acaste: 1, P. apiculatus Salt. 2, P. brongniarti Portl. 

 3, P. dalmani Portl. 4, P.jamesi Portl. 5, P. alifrons Salt. 6, P. jukesii 

 u. sp. 7, P. conophthalmus Boeck. Sec. Odoniochile: P. mucronatus 

 Brong., P. amphora n. sp. Chelrurus bimucronaius Murch. Sec. Crota- 

 locephalus: 1, C. artictilatus Miinst. Sec. Cheirurus ^ro'per: 2, C. speciosus 

 Dalm. 3, C. gelasinosus Portl. 4, C. cancurus n. sp. 5, C. octolobatus 

 McCoy. Sec. Actinopeltis: 6, C. clavifrons Dalm. 



Sphcerexochus mirusBeyr. I, Encrinurus sexicostatus S&lt. 2, E. punc- 

 to<Ms Briinn. 3, E.variolaris Brong. 4, E. multisegmentatus Fortl. Cyphaspis 

 megalops McCoy, C. pygmceus n. sp. Acidaspis jamesii Salt., A. bispinosus 

 McCoy. 3, A. sp. ? 4, A. biserialis n. sp. 5, A. sp. ? 6, A. caractaci n. sp., 

 A. coronatus n. sp. (A. brighiii, Mem. Geol. Sur., pi. 9, figs. 8-9). 

 13 



