ZOOLOGY OF FERNANDO NORONHA. 
503 
when viewed from above. It was very plentiful in the lake on 
the south-west corner of the island. ' 
List of Species obtained at Fernando Noronha by the 
‘ Challenger ’ Expedition. 
For the above species, see the Reports on the Gasteropoda, 
Polyplacophora and Lamellibranchiata, by R. B. Watson, A. C. 
Haddon, and E. A. Smith respectively. 
Fig. 1. Triton Bidleyi, sp. n. 
2. Littorina trochiformis, var. 
3, 3 a. Acmcea noronhensis, sp . n. 
4-4 b. Siphonaria picta, var. 
5. Chiton ( Ischnochiton ) carribceorum. 
5 a. Ditto. Central valve, magnified. 
G, 6 a. Area ( Acar ) Adamsii. 
7-7 c. Helix ( Ophioyyra ?) quinquelirata. 7 c. Aperture, enlarged; lip 
broken away to show the teeth. 
8. Bulimus ( Tomigerus ) Bamayei, sp. n. 
9. „ ( Bulimulus ) Bidleyi , sp. n. 
10. Pupa solitaria , sp. n. 10 a. Aperture, enlarged. 
11-11 b. Planorbis noronhensis, sp. n. 
Acmsea, sp. 
Littorina nodulosa, d’Orb. 
Nerita ascensionis, Gmelin. 
Ceritliiopsis, sp. 
Columbella mercatoria, Linn. 
Cyliehna noronyensis, Watson. 
Fossarus ambiguus (Linn.). 
Marginella sagittata. Hinds. 
Mitrularia uncinata (Rve.). 
Nassa capillaris, Watson . 
Oliva fulgida, Reeve. 
pulchella (P), Duclos. 
Phasianella, sp. 
Rjssoa, sp. 
Watson. 
Solarium, sp. 
Stomatella nigra, Quoy fy G. 
Utriculus canaliculatus (Say). 
Xenopliora corrngata (Reeve). 
Chiton Boogii, Haddon. 
Pectunculus pectinatus (Gmelin). 
Ervilia subeancellata, Smith. 
Cardium medium, Linne. 
Lucina pecten, Lamarck. 
Mytilus exustus, Rve. 
Area imbricata, Bruy. 
Pecten noronhensis. Smith. 
Scalaria hellenica, Forbes. 
Siphonodentalium tetraschistum, 
EXPLANATION OF PLATE XXX. 
