MR J. W. GREGORY ON THE MALTESE FOSSIL ECHINOIDEA. 587 



Cidaris melitensis, R. J. L. Guppy, 1866, "Tert. Ech. fr. W. Indies," Quart. Journ. Geol. Soc, xxii. 



p. 299. 

 „ ,, R. Etheridge, 1869, in "Sawkins* Rep. Geol. Jamaica," Mem. Geol. Surv., p. 335. 



G. Cotteau, 1875, "Descr. Ech. Tert. St Barth. and Anguilla," K. Svensk. Vet. Akad. 



Handl., xiii., No. 6, pp. 8-10, pi. i. f. 1-10. 

 „ „ G. Mazzetti, 1879, " Ech. foss. Montese," Atti Soc. Nat. Modena, xiii. p. 118. 



„ „ A. Manzoni, 1880, " Ech. foss. Mol. serp.," Denk. Ak. Wiss. Wien, xiii., Abth. 2, 



p. 186. 

 ,, „ A. Manzoni, 1881, "Spugne Mol. mioc. Bolognese," Atti Soc. Tosc. Sci. Nat, v. 



p. 174. 



Type. — Coll. Earl of Ducie. 



Distribution. — Malta — Upper Coralline Limestone (common). West Indies — Anguilla 

 Miocene. ? Greece — Munychie (Pliocene), Pireus. Italy — Montese, Modena ; Serra di 

 Guidoni, Bologna (Serpentinosa molassa). 



Remarks. — Specimens of this species are fairly common in the uppermost bed of the 

 Maltese series. Dr Wright referred some plates and spines from the Lower Coralline 

 Limestone to this species, but these are here regarded as a new species, C. oligocenus. 



Species 2. Cidaris scillse, Wright, 1864. 



Cidaris scillas, T. Wright, 1864, Quart. Journ. Geol. Soc, xx. p. 474. 



Type.— Geol. Soc. Coll. 



Distribution. — Malta — Globigerina Limestone. 



This species was based by Dr Wright on a specimen now in the collection of the 

 Geological Society, which he identified with the Cidaris figured by Scilla.* This author 

 gives two figures, from the better of which this species is almost certainly distinct. It 

 agrees most closely with Cidaris adamsi, Wright, but the miliary region is narrower 

 and the plates larger. 



Species 3. Cidaris avenionensis, Desmoulins, 1837. Plate I. fig. la-c. 



Synonymy — 



Cidaris avenionensis, Desmoul., 1837, "3 re M6m. Ech.," Actes Soc. Linn. Bordeaux, ix. pp. 182, 183. 

 „ „ Ag. and Des., 1846, Cat. rais. Ann. Sci. Nat. Zool. (3), vi. p. 335. 



E. Desor, 1855, Syn. ticli. foss., p. 17, pi, vii. f. 7, 8. 

 „ ,, Tournouer, 1868, "Terr. tert. de Rennes et Dinan," Bull. Soc. geol. France (2), 



xxv. p. 381. 

 „ Peron, 1868, "Terr, tert Sud. Corse," Bull. Soc. geol. France (2), xxv. p. 672. 



„ „ J. B. Greppin, 1870, "Descr. g6ol. Jura Bernois," Mat. Carte geol. Suisse, 



8 me livr. p. 181. 

 „ „ Kaufmann, 1872, " Rigi et Mollasse Gebiet der Mittel Schweiz," Mat. Carte geol. 



Suisse, ll me livr. p. 489. 

 „ „ A. Manzoni, 1873, "II Monte Titano," Boll. R. Com. geol. Italia, iv. p. 17. 



„ ,, Locard, 1873, " Faune terr. tert. Corse," Bidl. Soc. geol. France (3), i. p. 238. 



,, ,, G. Seguenza, 1873, "Cenni serie terz. di Messina," Boll. R. Com. geol. Italia, iv. 



p. 262. 



* De Corporibus Marinis Lapidescentibus (1747), ed. 2, 1752, pi. xxiii. xxiv. 



