Rhinolambrus contrarius (Herbst, 1804) Fig. 6B

Material examined.

1 young female (10.5 × 10.0 mm), 3 juveniles (largest 6.8 × 6.8 mm), 7°48.004'N, 77°27.754'E, 50 m.

Remarks .

Herbst (1804: 9) described this species from material from somewhere in the "East Indies" and as far as is known, the type is lost (Sakai 1999). This is the type species of Rhinolambrus A. Milne-Edwards, 1878. The species has a wide Indo-West Pacific distribution (see Flipse 1930; Sakai 1976); and in India has been reported from various parts of Tamil Nadu and Andamans (Henderson 1893; Jeyabaskaran et al. 2000; Kathirvel and Gokul 2010; Dev Roy and Nandi 2012; Vidhya et al. 2017).

The present materials are all juveniles, with none of the gonopod structures of the males developed even though the chelipeds are elongated. The pronounced “neck-like” constriction in adults of this species has still not developed (Fig. 6B).