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



Species 4. Echinus hungaricus, Laube, 1871. 

 Synonymy — 



Echinus hungaricus, G. C. Laube, 1871, " Ech. cesterr.-ung. ob. Tertiarabl.," Ahh. k. k. geol. Reichs., 



v. p. 60, pi. xvi. f. 3. 

 Echinus hungaricus, A. Manzoni, 1880, "Ech. foss. Plioc," Atti 8oc. Tosc. Sci. fi'at, iv. pp. 330, 



331. 



Type— Mus. Buda-Pest. 



Distribution. — Hungary — Bid, near Buda-Pest ; Leithakalk. Italy — Castell Arquato 

 (Pliocene). Malta— Coll. Geol. Soc. 



Remarks. — The collection of the Geological Society contains a specimen of a large 

 Echinus 80 mm. in diameter, which agrees fairly closely with the above species. A 

 series of small specimens presents variations suggesting that Professor Laube's type is 

 only a very large Echinus duciei. The increase in the horizontal row of tubercles is just 

 what would be expected in an especially well-developed specimen of that species. The 

 Leithakalk form has more tumid sides and a more regularly distributed granulation, and 

 thus it may be a good species. Further material may, however, not unlikely necessitate 

 the abandonment of this species. 



Family FIBULAEHDJE. 



Genus EchinocyaniUS, Van Phelsum, 1774. 



Species 1. Echinocyamus Studeri (E. Sismonda), 1842. Plate I. fig. 8-10. 



Synonymy — 



Anaster studeri, E. Sismonda, 1842, "Ech. foss. Piem.," Mem. R. Ac. Sci. Torino (2), iv. p. 44, 



pi. ii. f. 8, 9. 

 Fibularia studeri, E. Sismonda, 1842, "App. Ech. foss. Piem.," Mem. R. Ac. Sci. Torino (2), iv. 



p. 388. 

 Fibularia studeri, Michelotti, 1847, "Foss. Terr. Mioc. Ital. Sept.," Natuurk. Verh. Holl. maatsch. 



Wetensch. Haarlem (3), iii. St. 2, p. 64, pi. ii. f. 17 and 18. 

 Echinocyamus studeri, Agassiz and Desor, 1847, Cat. rais. Ann. Sci. Nat. Zool. (3), vii. p. 142. 

 ,, ,, E. Sismonda, 1847, Syn. meth. anim. invert, pedem foss., p. 8. 



E. Desor, 1857, Syn. Ech. foss., p. 219. 

 „ „ A. Gaudry, 1862, "Geol. ile de Chypre," Mem. Soc. geol. France (2), vii., 



No. 3, p. 301. 

 „ „ A. Manzoni, 1873, "II Monte Titano," Boll. R, Com. geol. Ital, iv. p. 20. 



Distribution. — Malta — Globigerina Limestone (bed b) ; Brit. Mus. Italy — Superga, 

 near Turin (Helvetian), and Monte Titano (Aquitania). Cyprus — Mavrospilios ; Pliocene 

 (fide Gaudry). 



Remarks. — Had there been only two or three specimens of this species available for 

 examination, no doubt it would have been made a new species, distinguished from 



