1. AGASSIZ, A, MEMOIRS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES 10: 357 (1874).
2. BANSE, K, PROGRESS IN OCEANOGRAPHY 2: 53 (1964).
3. Bayne, B. L., Nature 198:406 (1963).
4. CHUANG, S, American Zoologist 17: 39 (1977).
5. CHIA, F.S., FINE-STRUCTURAL STUDY OF THE STATOCYSTS IN THE VELIGER LARVA OF THE NUDIBRANCH, ROSTANGA-PULCHRA, CELL AND TISSUE RESEARCH 214: 67 (1981).