44 
CATALOGUE OE ECHINIDA. 
Amphidetus ovatus, yar. minor, Agassiz &; Desor , Ann. Sc. Nat. 
1847, viii. 12 ; Seba, iii. t. 15, figs. 27, 29 ; cop. E. M. t. 159, 
figs. 5, 6. 
Hab. North Sea. 
a , b. Dry. Coast of Northumberland. Presented by A. G. 
Melville, M.D. 
3. Echinocardium Mediterraneum. 
Back rather convex, with a flattish depression ; belly flat ; 
tail prominent, pointed ; pectoral area lanceolate. 
Amphidetus Mediterraneus, Forbes , Ann. Nat. Hist. 
Hab. Egina Sea, Forbes. 
4. Echinocardium Australe. 
The hinder end erect, the lower edge rather acute. 
Hab. Australia. 
a. Small, with only a few spines in anterior groove. Aus- 
tralia, Port Jackson. Presented by J. B. Jukes, Esq. 
b. Larger, without spines. Van Diemen’s Land. Presented 
by Ronald Gunn, Esq. 
c. Larger, with spines. Van Diemen’s Land. Presented 
by Dr. A. Sinclair. 
d. Without spines. Western Australia. 
5. Echinocardium Zelandicum. 
Shell ovate, rather elongate ; plastron lanceolate, elongate. 
Hab. New Zealand. 
a, b , c, d, e. Without spines. New Zealand. Presented by 
Dr. Andrew Sinclair. 
** Anterior odd ambulacral groove very shallow , lower part of 
hinder end produced , acute. 
6. Echinocardium gibbosum. 
Without any anterior ambulacral groove ; front edge of the 
shell much elevated ; internal fasciole narrow at the summit. 
Amphidetus gibbosus, Agassiz <Sc Desor , 1. c. viii. 11. 
Var. Minor , Amphidetus pusillus, Agassiz , Prod.? 
Echinocardium pusillum, Gray , Ann. Phil. 1825, 8. 
Hab. French coast. Palermo. 
2. Lovehta. 
Shell elongate ; lateral ambulacral petals, forming a crescent, 
united by their convex sides, the anterior odd one sunk in a 
groove, and formed of very small pores ; back with large tu- 
bercles between the ambulacra, supported by large internal 
