1825.] Mr: Gray on the Sea Eggs, 429 



the interovarial perforations minute, at the apex of the atobularra. 

 The body formed like Echinidce of twenty bands, the ambulacral 

 band being the narrowest; the sutures are not so distinctly sinuous 

 as in Echinidce. 



Galerites, Earn, Fibula conulus, Klein, Echinites, Van 

 PheL Echinometra, Van Phel. 



Body conical ; base orbicular or subangular ; ambulacra ten, 

 each formed of two series of perforations placed together in 

 pairs, extending without interruption from the mouth to the 

 vertex ; mouth central ; anus marginal ; only found fossil. 



G. vulgaris, Lam. Klein, t. 14, f. A K. 



DiscoDEA. Fibula discoidea, Klein, Galerites, Lam, 

 Echino discoides. Van Phel. 



Body orbicular, depressed ; ambulacra ten, placed in pairs ; 

 alternately smaller, rest like Galerites. 



D. rotularis. Galerites rotularis, Klein, t, 14, f. L — O. , 



EcHiNANAus, Kanig. Echinoneus, Van Phel. and Lam. 

 Echinoconi pars, Bryerius. 



Body obovate or orbicular, rather depressed ; ambulacra ten, 

 placed'in pairs, extending without interruption from the vertex to 

 the mouth ; mouth central ; anus placed between the mouth and 

 the margin. 



E. cyclostomus, noh. Echinoneus cyclostomus, Klein, t. 37, 

 f.3, 4. 



EcHiNocoRYs, Bryerius. Echinus salaris and pelagius, 

 Van Phel. Cassis Galea and Galeola, Klein. Anachites, Lam. 



Body ovate, convex ; base oval, flattened ; ambulacra ten, 

 placed in pairs, extending without interruption from the vertex 

 to the mouth, where they become closed together ; mouth lateral, 

 transverse ; anus marginal. 



E. ovatus, Leske, t. 53, f. 3. Anachites ovata, Lam. This 

 genus is very closely allied to the SpatangidcR, and, perhaps, 

 should be referred to them. 



EcHiNOLAMPAs,w.o6. Echinanthus? Van Phel. Echinanthus, 

 Leske. Clypeaster, Lam. Scutum ovatum, Klein. 



Body ovate, convex ; base ovate, flattened, extended poste- 

 riorly ; ambulacra ten, placed in pairs, rather distant, near the 

 vertex, interrupted at the edge, and close together near the 

 mouth; mouth subcentral ; anus marginal. 



*E. Koenigii, nob. Echinoneus lampus, De la Beche, Trans, 

 Geol. Soc. i. t. 3, f. 3, 4, 5. *^E. oviformis, nob. Echinus, 

 Gmelin. Clypeaster oviformis. Lam. Klein, t. 20, f. c d, 

 E. orientalis, nob, Seha, iii. t. 10, f. 23, 24. 



EcHiNOBRissus, Bryeriiis. Nucleolites, Lajn. 



Body ovate or cbrdiforra, rather convex, grooved in front ; am,- 



