Brazilian Journal of Biology https://doi.org/10.1590/1519-6984.226051 ISSN 1519-6984 (Print) ORIGINAL ARTICLE ISSN 1678-4375 (Online) Anatomy of soft body of Pugilina cochlidium (Linnaeus, 1758) and P. erecta (Vermeij & Raben, 2009) (Neogastropoda: Melongenidae) from Thondi Coast-Palk Bay in Tamil Nadu, India P. De los Ríos-Escalantea,b , C. Ragunathanc, L. Kanaguc and C. Stellac* aDepartamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco – UCTemuco, Casilla 15-D, Temuco, Chile bNúcleo de Estudios Ambientales, Universidad Católica de Temuco – UCTemuco, Casilla 15-D, Temuco, Chile cDepartment of Oceanography and Coastal Area Studies, Alagappa University, Thondi Campus, 623409, Tamil Nadu, India *e-mail:
[email protected];
[email protected] Received: July 13, 2019 – Accepted: December 10, 2019 – Distributed: May 31, 2021 (With 3 figures) Abstract The species of Pugilina cochlidium (Linnaeus, 1758) and P. erecta (Vermeij & Raben, 2009) has been studied in the present study. The female can be differentiated from the male by the absence of the cephalic penis and a complicated genital aparatus visible through the mantle skirt in both the sexes. In other aspects of the external features of female are quite to males. In both species the digestive system was similar with few differences in structure between each other. It consists of buccal mass, proboscis, salivary glands, accessory salivary glands, oesophagus, stomach, intestine, rectum and anus. The nervous system in both P. cochlidium and P. erecta is constituted by six ganglia which forms the circumoesophgeal ganglionic ring. Among the neogastropods there is a similarity in the organization of the reproductive systems.