NO. 3 CASSIDULOID ECHINOIDS — KIER 235 



Gray, J. E. 



1825. An attempt to divide the Echinida, or sea eggs, into natural families. 



Ann. Philos., vol. 26, pp. 423-431. 

 1 85 1. New genera and species of Scutellidae and Echinolampidae. Proc. 

 Zol. Soc. London, vol. 19, pp. 34-38. 

 Gregory, J. W. 



1890. Some additions to the Australian Tertiary Echinodermata. Geol. 



Mag., n.s., dec. 3, vol. 7, No. 11, pp. 481-492, pis. 13, 14. 



1891, The Maltese fossil echinoides and their evidence of the correlation 



of the Maltese rocks. Trans. Roy. Soc. Edinburgh, vol. 36, pt. 3, 

 No. 22, pp. 585-639, 2 pis. 

 Groot, J. J. ; Organist, D. M. ; and Richards, H. G. 



1954. Marine Upper Cretaceous formations of the Chesapeake and Dela- 



ware Canal. Delaware Geol. Surv. Bull. No. 3, 62 pp. 



Hawkins, H. 



191 1. On the structure and evolution of the phyllodes in some fossil 



Echinoidea. Geol. Mag., dec. 5, vol. 8, pp. 257-265, pi. 13. 

 1920a. The morphology and evolution of the ambulacrum in the Echinoidea 



Holectypoida. Philos. Trans. Roy. Soc. London, ser. B, vol. 209, 



pp. 377-480, pis. 61-69. 

 1920b. Morphological studies on the Echinoidea Holectypoida and their 



allies. No. 10, On Apatopygus gen. nov. and the affinities of some 



Recent Nucleolitoida and Cassiduloida. Geol. Mag., vol. 57, 



pp. 393-401, pi. 7. 

 Hyman, L. H. 



1955. The invertebrates, vol. 4: Echinodermata. The Coelomate Bilateria, 



763 pp., 280 figs. New York. 



Ikins, W. C. 



1940. Some echinoids from the Cretaceous of Texas. Bull. Amer. Paleon- 

 tology, Ithaca, vol. 25, pp. 49(1) -88 (40), pis. 4(1) -7(4). 



Jeannet, a. 



1928. Contribution a I'etude des echinides tertiaires de la Trinite et du 

 Venezuela. Soc. Paleont. Suisse Mem., vol. 48, 49 pp., 6 pis. 



Joysey, K. 



1952. Note on the Corallian echinoid Pygurus hmismanni (Koch and 

 Dunker) from the Yorkshire Wolds. Proc. Geol. Assoc. London, 

 vol. 63, pp. 240-243, pi. 9. 



Kew, W. S. W. 



1920. Cretaceous and Cenozoic Echinoidea of the Pacific Coast of North 

 America. Univ. California Publ. Geol., vol. 12, No. 2, pp. 23-236, 

 pis. 3-42, 5 text figs. 



KlER, P. M. 



1957. Tertiary Echinoidea from British Somaliland. Journ. Paleont., vol. 31, 

 No. 5, pp. 839-902, 5 pis., 20 text figs. 



KONGIEL, R. 



1935- Contribution a I'etude du "siwak" dans les environs de Pulawy 

 (plateau de Lublin). Trav. Inst. Geol. et Geogr. I'Univ. Wilmo, 

 59 pp., II pis. 



