| OCR Text |
Show 382 SIR 0. ELIOT ON NUDIBRANCHS [Mar. 1, The following is a list of the forms noticed below :- Chromodoris A. & H. 1. Chr. reticulata Pse. 2. Chr. sykesi. 3. Chr. cavce. 4. Chr. annulata. 5. Chr. splendens. 6. Chr. tryoni (Gar.). 7. Chr. vicina. 8. Chr. elizabethina B., var. africana. 9. Chr. runcinata B. 10. Chr. nigrostriata. 11. Chr. scurra B. 12. Chr. hilaris B. 13. Chr. lineata Souleyet. 14. ,, ,, var. nigrolineata. 15. Chr. ? magniiica Q. & G. 16. Chr. inconspicua. 17. Chr.flava. Casella H. & A. Adams. 18. Gas. atromarginata (Ouv.). Ceratosoma Adams &, Reeve. 19. Cer. cornigeritm (Ad.). Sphcerodoris B. 20. Sph. Icevis B. Orodoris B. "] 21. 0. miamirana B. I (From Willey's N e w Britain Miamira B. | Collection.) 22. Mia. nobilis B. J Genus CHROMODORIS. More than 100 forms are referred to this large genus, but are by no means all equally certain. About 40 have been described by Prof. Bergh, and may be regarded as well established. Most of the remainder are known only from the external characteristics often very superficially described, and many of the so-called species are probably merely varieties. The animals are as a rule soft, smooth, and brightly coloured. The branchiae are simply pinnate, the tentacles small and capable of retraction. There is a strong labial armature and a characteristic radula. The rhachis often bears thickenings: the first tooth on each side of it is denticulate on both the inner and outer sides, and thereby differs from the rest, which are denticulate on the outer side only. The outermost are irregular and denticulate on the apex only. There is no stomach outside the liver. Within the limits of these characters there is such great variety that it may be doubted if the genus should not be split up. |
