Vol. 67.] THE FOSSIL ECHIXOLDEA OF CTREXAICA. 665 



at the anterior end of the test. The same character occurs iu the 

 Langhian Fibularia pseudopusilla Cott., of Sardinia. 1 



Among species from higher horizons, it is natural first to compare 

 the Cyrenaican specimens with E. studeri (Sism.), as that species 

 was referred by Sismonda to Fibularia ; but, as Agassiz & Desor 

 remarked, when referring it to Echinocyamus in the ' Catalogue 

 Raisonne,' 2 it is very elongated and ' tres plate.' The Maltese 

 specimens figured in 1891 3 as E. studeri are far more depressed 

 in form. They have since been separated by M. J. Lambert as 

 F. melitensis* owiug to their less oval shape and less marginal 

 periproct than the specimens figured by G. Capeder as E. studeri 5 ; 

 but, according to the latter, the specimens which he refers to 

 E. studeri have a ratio of height to length of 1 to 1*9 mm. (op. cit. 

 p. 508), which does not correspond with the statement in Agassiz's 

 diagnosis that the form is ' tres plate.'* According to IT. Lambert, 

 E. studeri is even flatter than a species in which the ratio of height 

 to length is as 1*5 to -i-25. 6 Signor Capeder has described twenty- 

 five species, of which nineteen are new and come from one locality 

 in Sardinia. On those lines the Maltese specimens should be 

 distributed among several species. 



Gauthier 7 has described Echinocyamus thuilei from the Helvetian 

 of Gebel Geneffe near Suez ; this echinoid is 12 millimetres long, 

 9 mm. wide, and '6'b mm. high, so that it is much flatter than the 

 specimens from Cyrene. 



The flat upper surface of the Cyrenaican specimens resembles 

 that of Fibularia calarensis Lambert (Joe. cit.), from the Helvetian 

 of Cagliari; but that species is nearly thrice as long as high (1*5 to 

 4-25 mm.). 



Scxjtella texeea Laube, 1868. 



Scittella tenera Laube, 1868, ' Beitr. zur. Kenntniss d. Ech. Vic. Tert.' 

 D-mkschr. K. Akad. Wiss. Wien, vol. xxix, pt. 2, p. 18 & pi. ii, fig. 7. 



Scutella tenera Dames, 1877, ' Ech. Vic. & Ver. Tert.' Palseontographica, 

 vol. xxv, p. 22. 



Scutella tenera Oppenheini, 1902, ' Revis. Tert. Ech. Venet. &c.' Zeitschr. 

 Deutsch. Geol. Gesellsch. vol. liv, p. 192. 



Scutella cavipetala Laube, 1868, op. cit. p. 17 & pi. ii, fig. 6. 



1 See, for example, J. Lambert, 'Ech. Foss. Terr. Mioc. Sardaigne' Abhandl. 

 Schweiz. Palaont. Gesellsch. vol. xxxiv (1907) pi. iii, fig. 19. 



- L. Agassiz & E. Desor, ' Cat. Rais.' Ann. Sci. Nat. [Zool.] ser. S, vol. vii 

 (1847) p. 142. 



3 J. \V. Gregory, 'The Maltese Fossil Echinoidea' Trans. R. Soc. Edin. 

 vol. xxxvi, pt. iii, no. 22 (1891) pi. i, figs. 8-10 c. 



4 J. Lambert, ' Ech. Foss. Terr. Mioc. Sardaigne ' Abhandl. Schweiz. Palaont. 

 Gesellsch. vol. xxxv (1908) p. 127. 



5 ' Fibularidi del Miocene medio di S. Gavino a Mare (Portotorres) Sar- 

 degna ' Boll. Soc. Geol. Ital. vol. xxv (1906) pi. x, figs. ba-o d. 



6 J. Lambert, 'Ech. Foss. Terr. Mioc. Sardaigne' Abhandl. Schweiz. Palaont. 

 Gesellsch. vol. xxxiv (1907) p. 40 & pi. ii, figs. 27-31 {Fibularia calarensis). 



"i In Fourtau, 'Rev. Ech. Foss. Egvpte ' Mem. Inst. Egypt, vol. iii, fasc. 8 

 (1899) p. 696 & pi. ii, figs. 11-13. 



