« OPISTHOBEA.NCHIATA FROM THE ABllOLHOS ISLANDS. 575 
27. Bergh, R.— "Malakol. Untersiicli, Die Pleurobranchideii." Seraper's Reis. im 
Archipel d. Philipp. 1898. 
28. Id. "Malakol. Untersiich." Semper's Reis. im Arcliipel d. Philipp. vi. 1904. 
29. Br.AiNviLLR, H. M. D. dk. — Manuel de Malacologie et de Ooncliyliologie. Paris, 182-5. 
30. Oheeseman, S. T. — •" Descriptions of three new Species of Opisthobranch Mollusca 
from New Zealand." Proc. Zool. Soo". Lend. 1878, p. 275. 
31. CcrviEE, G. — "Memoire sur le Genre Doris." Ann. du Mus. nation. d'Hist. uat. 
Tome iv. 1804. 
32. Dakin, W. J. — " The Percy Sladen Trust Expedition to the ."^.brolhos Islands (Indian 
Ocean) Report. I. Introduction ; General Description of the Coral Islands 
forming the lioutman Abrolhos Group ; the Formation of the Islands." Jouru. 
Linn. iSoc. Lond. vol. xxxiv. No. 226, 1919. 
33. Ealbs, N. B. — " Aplysia." Liverpool Mar. Biol. Conim. Mem. xxiv. 1921. 
34. Ehrrnbebg, C. G. — '" Symbolce Physicfe, Animalia Evertebrata exclusis. insectis, 
peroensuit Dr. 0. G. Ehrenberg." Series prima cum tabularum decade prima. 
Berolini, 1831. 
35. Emot, C. — •' Nudibranchiata, with some Remarks on the Families and Genera and 
Description of a new Genus, Diiridomorpfia." Fauna and Geog. of the Maldive 
and Laccadive Archipel. vol. ii. pt. i. igO.S. 
36. Id. " On some Niidibrauchs from East Africa and Zanzibar. Pt. I." Proc. ZooL Soc. 
Lond. pt. ii. 1903. 
37. Id. " On some Nudibranchs from East Africa and Zauzib.ar. Pt. V." Proc. Zool. 
Soc. Lond. pt. ii. 1904. 
38. Id. "Nudibranchs from New Zealand and the Falkland Islands." Proc. Mai. Soc. 
Lond. vol. vii. 1907. 
39. Id. "Notes on a Oollection of Nudibranchs from Ceylon." Spolia Zeylanica, 
Colombo, vol. vi. pt. 23, 1909. 
40. Id. Monograph of the British Nudibranohiate Mollusca. Part VIII. Supplementary. 
Ray Society, London, 1910. 
41. Fischer, P. — Manuel de Conohyliologie et de Paleontologie conchyliologique. Paris, 
1884. 
42. Forbes, E. — "On some new and rare British Molluscs," Ann. & Mag. N.at. Hist. v. 
1840. 
43. Gtstel, J. — Naturgeschichte des Tierreichs fiir Schulen. 1818. 
43 a. Gravenhobst, I. L. C. — Tergestiua, oder Beobachtuugen und Unterauchungen iiber 
einige bei Triest im Meere lebende Arten der Gattungen Octopus etc. 
Breslau, 1831. 
44. Gray, J. E. — " A List of the Genera of Recent Mollusca ; their Synonyma and Types." 
Proc. Zool. Soc. Lond. 1847, p. 129. 
45. Gray, E. — Figures of Molluscous Animals. V. London, 1850. 
46. Hancock, A. — " On the Anatomy of Doridopsis, a Genua of the Nudibranchiate 
Mollusca." Trans. Linn. Soc. Lond. vol. xxv. pt. 2, 1865. 
47. Hancock, A., and Norman, A. M. — " On Splanclmotro pirns, an undescribed Genus of 
Crustacea parasitic in Nudibranchiate Mollusca." Trans. Linn. Soc. Lond. 
vol. xxiv. 1863. 
48. VAN Hasselt, J. C. — " Uittreksel uit eenen Brief van Dr. J. C. van Hasselt aan Prof. 
van Swinderen." Alg. Konst en Letter-Bode, 1 Deel, 1824. Also " Extrait 
d'une lettre du J. C. van Hasselt au Prof, van Swinderen sur les Mollusques 
de Java." Bull. sci. nat. et de geol. iii. 1824. 
49. Hedley, C— " A Preliminary Index of the Mollusca of Western Australia." Journ. 
Roy. Soc. Western Australia, 1916. 
