22 
CATALOGUE OF ECHINILA. 
9. Mellita. 
Body subcircular, very flat, truncated behind, with five or 
six elongated perforations or lunules, the hinder corresponding 
with the odd inter-ambulacral area ; ambulacral petals closed ; 
inferior ambulacral grooves much waved ; larger spines of the 
back capitate ; vent very near the mouth ; ovarial pores four. 
Mellita, Klein ; Agassiz , Mon. Echin. ii. 34, 143 ; Agassiz & 
Besor , Ann. Sci. Nat. 1847, 138, not Tab. 
Clypeaster, § **, Lamk. Syst. 344. 
Scutella, § 1, Blainv. B. S. N. lx. 200. 
Echinodiscus, sp., Leske ay. Klein , 204. 
* Pores free ; no anterior slit. 
1. Mellita testudinea. 
Anterior side of the back convex, raised ; ambulacra short, 
broad. 
Placenta (Mellita) testudinea, Klein ed. LesTce , 25, t. 21, f. c. D., 
36, t. 33, f. r. s. jaws; Klein , Gall. § 82, 92, t. 11, f. c. 
Mellita testudinea, Agassiz , Mon. Scutelles , ii. 40, 143, t. 40, 
f. 7, 9 ; Agassiz as Besor , 1. c. 138. 
Echinodiscus quinquies perforatus, Leske ay. Klein, 197. 
Echinus orbiculus, y, Linn. S. N, ed. 12, 1105. 
Echinus pentaforus, Gmelin, S. N. i. 3189. 
Echinoglycus quinque perforatus, Van - Phelsum Brief. 35, 
n. 11. 
Pain d’epice, &c., BaviUa, Cat. i. 423. 
Echinus laganoides, <fec., Beba, Thes. iii. t. 15, f. 9, 10. 
Scutella quinquefora, Ency. Meth. t. 149, f. 3, 4. 
Echinodiscus, Gualt. Test. 1. 110, f. e . ; Muller, Belie. Nat. i. 93, 
t. d. 1, f. 16. 
Hab. Yera Crux. 
Var. 1. Anterior side moderate ; back flattish. 
Mellita quinquefora, Agassiz , Mon. Scutelles, ii. 36, 145, t. 3 ; 
Agassiz <k Besor, 1. c. 138. 
Scutella quinquefora, Lamk. Hist., iii. 280 ; Eth. t. 149, f. 3, 4 ; 
Beslong. Ency. Meth. ii. 676 ; Blainv. Bict. S. N. xlviii. 223 ; 
Besmoul. Tab. Syn. 224. 
Clypeaster pentaporus, Lamk. Syst. 349. 
Scutella pentapora, Blainv. B. S. N. lx. 200 ; Zooyh. 220 ; 
Agassiz, Prod. Echin. 188. 
Hab. Porto Rico. 
Var. 2. Anterior side short ; back convex, raised; ambulacra 
broad, short. 
