PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES Volume 51. No. 13, pp. 461^72, 7 figs. Marine Bioloqicai Labor^^'ory /onri-Hr-i ^, OceanoQ'-^ '-'*■'■'• "■ • ■ ■•-' ' Librar> November 23, 1999 NOV 2 9 1999 ' Two New Species of Chromodoris (MoIIusca, Nudibranchia, Chromodorididae) from Southern India, with a Redescription of Chromodoris trimarginata (Winckworth, 1946) by Angel Valdes Department of Invertebrate Zoology and Geology. California Academy of Sciences Golden Gate Park. San Francisco. California 941 IS Ernesto Mollo Istitiito per la Chimica di Molecole di Interesse Biologico. CNR. Via Toiano 6. S0072 Arco Felice. Napoli. Italy and Jesus Ortea Departamento de Biologia de Organismos y Sistemas. Laboratorio de Zoologia. Unirersidad de Oviedo. c/ Catedrdtico Rodrigo Uria s/n. 33071 Oviedo. Spain Chromodoris trimarginata (Winckworth, 1946) is redescribed on the basis of specimens from southern India. The reproductive system of this species is illustrated for the first time. New characters, such as the rhinophores and gill coloration, the width of the w hite marginal band, and the radular morphology, are provided to distinguish this species from the similar Chromodoris preciosa (Kelaart, 1858). In addition, two new species of Chromodoris from southern India are described. Chromodoris mandapametisis sp. nov. is characterized by a dorsum covered with brown spots, a broken line of bright orange around the mantle margin, very large branchial leaves, and radular teeth with large denticles. Chromodoris naiki sp. nov. is a pale gray species with bright orange and purple spots, and a number of white dots on the dorsum. Internally it lacks rachidian radular teeth, has long cusps in the mid lateral teeth, and lacks a vestibular gland. The external morphology and anatomy of these two species is described, and compared to other similar Indo-Pacific species. The Chromodorididae of India and Sri Lanka (Ceylon) have received little attention compared to well studied areas in the Indo-Pacific. Few species were described in the classic papers by Alder and Hancock (1864) and Kelaart (1958; 1859a; 1859b). In the first half of the 20th century, Farran (1905), Eliot (1906a; 1906b; 1910). O'Donoghue (1932), Winckworth (1945) and White (1948) described more new species or redescribed those introduced by Kelaart or other authors. More recently, Narayanan (1969) and Rudman (1973) studied several specimens from India, providing range extensions and the description of a new species. The present paper studies three species of the genus Chromodori.s Alder and Hancock, 1 864, collected by the second author from Mandapam (Tamil Nadu) and Muttom (Kerala), southern India. The specimens studied are deposited at the Department of Invertebrate Zoology, California Academy of Sciences, designated by the abbreviation CASIZ. 461
Two new species of Chromodoris (Mollusca, Nudibranchia, Chromodorididae) from southern India, with a redescription of Chromodoris trimarginata (Winckworth, 1946)
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