586 MR J. W. GREGORY ON THE MALTESE FOSSIL ECHINOIDEA. 



Ciclaris avenionensis, P. de Loriol, 1875, "Ech. tert. Suisse," Mem. Soc. pal. Suisse, ii. p. 15, pi. i. 



f. 8-13. 

 G. Cotteau, 1877, "Faune tert. Corse," Ann. Soc. Agric. Lyons (4), ix. pp. 235-7, 

 352, pi. viii. f. 3-7. 

 1 G. Vasseur, 1881, " Kech. geol. terr. tert. Fr. Occid. I. Bretagne," Bibl. ticol. 

 Habet. Etudes, xxiii., No. 1, p. 375. 

 Cf. Th. Fuchs, 1883, " Miocsen Fauna ^Egyptens," Palceontogr., xxx. Th. ii. p. 64, 

 pi. xxi. f. 9-12. 

 Bazin, 1884, "Ech. Mioc. moy. Bretagne," Bull. Soc. geol. France (3), xii. pp. 35, 



36, pi. i. f. 1-14 (var. sancti-juvati). 

 Th. Fuchs, 1885, "Gliederung unt. Neog. Mittelmeers," Zeit. deut. geol. Ges., 



xxxvii. p. 156. 

 L. Baldacci, 1886, " Descriz. geol. Sicilia," Mem. descr. Carta geol. Italia, i. 

 p. 91. 

 Cidaris stemmacantha, A. Agassiz, 1840, "Ech. Suisses," Nouv. Mem. Soc. helv. Set. not., iv. p. 73, 



pi. xxi. a, f. 4. 

 ,, „ A. Agassiz, 1840, Cat. Ectyp. Ech. Foss. Mus. Neoc, p. 10. 



„ „ G. Mazzetti, 1882, "Ech. foss. Montese," Ann. Soc. Nat. Modena (2), xv. p. 112. 



Type. — Agassiz's casts, S. 14, S. 22. 



Distribution. — Malta — Globigerina Limestone. Brit. Mus., No. 1957, and Geol. 

 Soc. Corsica — Bonifacio (bed, No. 6, " Zone a dents de poissons"). Sicily — (Argille 

 scagliosa Aquitanian), Messina (Langhien). Egypt — Gebel Geneffe ; Miocene. Italy — 

 Monte Titano (Aquitanian) ; Montese (Serpentinosa molassa, Langhien). Switzerland — 

 Ste Croix ; La Chaux de Fonds. Molasse (Helvetian). France — Les Angles, Avignon, 

 and St Paul trois Chateaux (Helvetian) ; St Juvat, Bretagne (Faluns d'Anjou ; Upper 

 Helvetian). 



Remarks. — Of this species there is a specimen in the British Museum Collection 

 (No. 1957), showing half one sector with a few spines. Of the identification of the 

 species there can be little doubt, though it has not previously been recorded from 

 the island. It differs from C. adamsi, Wr., and C. settles, Wr., by the narrowness of 

 the miliary region ; isolated plates have some resemblance to those of C. melitensis, Wr., 

 but in the species under discussion there is a greater number of plates in a vertical 

 series, the ambulacra are more sinuous and more granulated ; moreover, in C. melitensis 

 the height of the plates is more equal to their breadth, and the scrobicular circles are 

 quite distinct. Cidaris stemmacantha was based only on spines. 



Species 4. Cidaris adamsi, Wright, 1864. 

 Synonymy — 



Cidaris adamsi, T. Wright, 1864, "Foss. Echinidae Malta," Quart. Journ. Geol. Soc, xx. pp. 474- 

 475, pi. xxi. f. 5. 

 „ „ ? I. Cafici, 1880, "Sulla determ. cronol. calcare a selce pir. S. E. Sicilia.," Boll. R. 



Com. geol. Italia, xi. p. 501. 

 „ „ Th. Fuchs, 1883, "Miocsen Fauna ^Egyptens," Palaiontogr.., xxx. Th. ii. p. 50. 



„ „ ? L. Baldacci, 1886, "Descriz. geoL Sicilia," Mem. descr. Carta geol. Italia, i. 



p. 94. 



