500 
ME. H. N. EIDLET ON THE 
54. Spondylus, sp. 
A few odd valves picked up on the shores are too much worn 
to be identified with certainty. About a dozen forms have been 
described as West-Indian ; and doubtless it is one or more of 
these species which occur at Fernando Noronha. 
II. TERRESTRIAL SPECIES. 
1. Helix(Ophiogyea?) quinqtjelieata. (Pl.XXX. figs.7-7c.) 
Testa discoidea, supra leviter convexa, in feme anguste umbi- 
licata, tenuis, viridi-flavescens, nitida ; anfractus 7, lente accres- 
centes, convexi, incrementi lineis striati, supra peripheriam in- 
distincte concavus, antice haud descendens, intus plicis tribus 
insequalibus perlucentibus munitus, lamellisque duobus validis 
parietalibus instructus ; apertura semilunata, parva; peristoma 
teuue, haud expansum. 
Diam. maj. 6 millim., min. 5|, alt. 3. 
Sab. Found, both living and dead, at the north end of the 
island, also on Platform Island. 
S. entodonta, Pfeiffer, from Ecuador, is an allied form ; bnt 
has a flatter spine, more open umbilicus, and no parietal lirae. 
2. Btjlimus (Tomigeeus) Ramagei, sp. n. (Plate XXX. fig. 8.) 
Testa subovata, rimata, solida, fusca, zonis angustis albis trans- 
versis (in anfr. ultimo quatuor) cincta ; anfractus 5, convexiusculi, 
lineis incrementi subrugosis, striisque tenuissimis spiralibus 
sculpti, ultimus magnus, antice descendens, post labrum con- 
tractus, scrobiculatus ; apertura irregularis, longitudinis totius \ 
paulo superans, dentibus quatuor inrequalibus (duobus parvis in 
pariete aperturali, uno magno compresso in margine dextro, uno 
tuberculiformi valido in margine columellari) munita ; peristoma 
album, valde incrassatum, leviter reflexum, marginibus callo craso 
junctis. 
Longit. 231 millim., diam. 16. 
171 191 
55 ±S 2 55 55 ± ^2* 
The above measurements show that considerable difference 
exists in the size of specimens ; and it is a curious fact that the 
smallest example, obtained from a native, is the only one which 
appears in fairly fresh condition. All the rest were found by 
Mr. Ramage imbedded in sandy mud on a raised reef at Tobacco 
Point, and have a semi-fossilized appearance. 
The only forms at all approaching that now described are the 
