COS 



.Mil J. W. GREGORY ON THE MALTESE FOSSIL ECH1NOIDEA. 



Diagnosis. — Form oval ; slightly flattened at both ends ; depressed ; highest at the 

 apical system, which is a little excentric anteriorly. 



Ambulacra : Petals long, narrow, and tapering gradually at each end. Outer pores 

 small slits ; inner, small and round. Poriferous zones almost equal on each side. 

 Ambulacra nearly equal. 



Epistroma : Of coarse granules. 



Mouth oval ; floscelle very imperfectly developed. 



Anus large, oval ; a slight tendency to form a rostrum. 



Dimensions — 



Ambulacra, postero-lateral length, . 16 ram. 



„ „ width, . 5 „ 



Apical system, distance from anterior 



margin, . . . . . 23 „ 



Mouth, distance from anterior margin, . 23 ,, 



Length, 



. 52 mm 



Width,. 



• 46 „ 



Height, 



. 20-5,, 



Ambulacra, antero-lateral, length, 



• 15 „ 



width, 



. 4-5 „ 



Type.— Coll. Earl of Ducie. 



Distribution. — Malta — Greensand (Helvetian). 



Remarks. — This species differs from Echinolampas deshayesi, Desor, in that the 

 form is much more depressed and the petals are much shorter. Thus in the specimen 

 from Corsica figured by M. Cotteau, the length, breadth, height as 100 : 92 - 4 : 56"6, 

 whereas in this species the proportion is as 100 : 90*5 : 38. The differences in the petals 

 is still more conclusive. 



Species 4. Echinolampas hayesianus, Desor, 1847. 



Synonymy- 



Echinolampus hayesianus, E. Desor, 1847, Cat. rais. Ann. Sci. Nat. Zool. (3), vii. p. 166. 

 „ „ E. Desor, 1857, Syn. tch. foss., p. 308. 



„ „ G. Cotteau, 1877, "Faune tert. Corse," Ann. Soc. Agric. Lyons (4), ix. 



pp. 283-4, pi. x. f. 2-4. 

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



p. 123. 

 Echinanthus „ D'Orbigny, 1854, "Note rect. divers genres Ech.," Rev. Mag. Zool. (2), 



vi. p. 24. 

 „ D'Orbigny, 1855, Pal. Franc. Terr. Cret, vi. p. 296. 



non Echinolampus deshayesi, T. Wright, 1855, "Foss. Echinod. Malta," Ann. Mag. Nat. Hist. (2), xv. 



pp. 122-4, pi. iv. f. 3. 

 „ „ T. Wright, 1864, "Foss. Echinidae Malta," Quart. Journ. Geol. Soc, xx. 



p. 480. 



Type.—Y. 17. 



Distribution. — Malta — Globigerina Limestone ; Nodule Seam No. 4 ; Fommer Reh. 



Corsica — Cadelabra (Helvetian?). Oran and Cartagena. Italy — Montese (Langhian ; 

 Serpentinosa molassa ; fide Mazzetti). 



