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



607 



Dimensions — 



Length, . . 



Width, 



Height, 



Petal of anterior ambulacrum, length, 

 ,. „ width, 



,, „ No. of pores, right side, 



„ ,, „ left side, 



Petal of antero-lateral ambulacrum : length, . 

 ,, ,, width, . 



,, ,, No. of pores, anterior side, 



,, ,, „ posterior side, 



Petal of postero-lateral ambulacrum, length, 

 „ „ width, . 



., ,, No. of pores, anterior side, 



., ,, ,, posterior side, 



Mouth, distance from anterior margin, 



Apical system, „ ,, ... 



Manzoni, 



B. M., 



pi. i. f. 4, 5. 



24,621. 



56 mm, 



34 mm 



51 „ 



28 „ 



35-5 „ 



17 „ 



22 „ 



11 „ 



6 „ 



3 „ 



32 





22 





21 mm. 



10 „ 



6 „ 



3 „ 



18 





30 





21 mm. 



11 „ 



5 „ 



3 „ 



28 





16 





mm. 



15 „ 



27 



15 „ 



Italy — Serpentina 



Type.— Brit. Mus., 24,621 ; Manzoni's figure (pi. i. f. 14). 



Distribution. — Malta — Nodule Seams of Globigerina' Limeston 

 molassa of Serra di Guidoni, Bologna. 



Remarks. — This species has been rather unfortunate. Manzoni, impressed by the 

 resemblance of the ambulacra to those of the West Indian Echinolampas depressa, Gray,* 

 identified this as the same species. Though it belongs to the same group of species, the 

 two, however, seem clearly distinct, asM. de LoRiOLt has already suggested. The 

 species with which it is perhaps most closely allied is the Echinolampas angulatus, Mer., 

 from the same horizon in Tuscany. M. de Loriol has pointed out the differences 

 between them in his elaborate description of this species. J From E. richardi and 

 E. laurillardi, with which it was confused by Dr Wright, it differs in the great 

 inequality of the poriferous zones. The same character serves to distinguish it from 

 Echinolampas scutiformis (Leske). 



Species 3. Echinolampas wrighti, n. sp. 



Synonymy- 



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



(2), xv. pp. 122-124, pi. iv. f. 3. 

 „ hayesianus (non Desor), T. "Wright, 1864, "Foss. Echinidag Malta," Quart. Joum. Geol. 

 Soc, xx. p. 480. 



* " Description of two new Genera and some new Species of Scutellidee and Echinolampidag in the Collection of 

 the British Museum," Proc. Zool. Soc, xix., 1851, p. 38. 



t "Description des Echinides des environs de Camerino (Toscane)," Mem. Soc. Phys. Hist. Nat. Genitve, xxviii., No. 3, 

 1882, p. 16. 



t Ibid., pp. 13-18, pi. ii. iii. f. 1, 2. 



