OF MERGrTJI AND ITS ARCHIPELAGO. 



167 



Very variable in form and size ; largest specimen 60 millim. 

 long. 



King Island and Kisseraing Island, Mergui. Port Canning, 

 Arakan, Fencing, Andamans, Singapore. "Widely distributed in 

 the Malayan Archipelago, extending to the Philippines and 

 Northern Australia. 



35. Auricula (Alriculastra) sttbtjla, Quoy and Gaimard, 

 Voy. 'Astrolabe,' Moll. ii. p. 171, pi. 13. figs. 39, 40 ; Adams 

 and Peeve, Voy. ' Samarang^ Zool. pi. 14. fig. 15, copied Adams, 

 Gen. pi. 82. fig. 1 ; Peeve, Conch. Icon. xx. pi. ii. fig. 12 ; v. Mar- 

 tens, Moll. Mauritius, p. 207. 



Mergui, on mud-flats. Port Canning. Throughout the Ma- 

 layan Archipelago to New Ireland. 



36. Melampus ceilonicus, Petit, Proc. Zool. Soc. 1842, 

 p. 202 ; Pfeifer, Mon. Auricul. p. 31. 



King and Elphinstone Islands. Nearly one -coloured speci- 

 mens. Ceylon, Pombay. 



Onchidiid^. 



37. Onchidium verrtjculattjm, Cuvier, Semper, Peisen im 

 Archipel der Philippinen, vol. iii. 1877, p. 255, pi. 21. fig. 1, pi. 22. 

 figs. 3, 4 ; Pergh, Zool. Challenger, vol. x. p. 148, pi. 8. fig. 14. 



Dorsal tubercles rounded, rather large, nearly equal, some on 

 the hinder part compound, brush-like ; eye-spots in small groups 

 on retractile tubercles. Colour above grey or greyish brown, 

 with few scattered black spots ; below pale, one-coloured. 



Owen Island, littoral. Ped Sea, Nicobars, Moluccas, Timor, 

 Australia, Japan. 



38. Onchidiitm tigrinum, Stoliczka, Journ. As. Soc. Pengal, 

 vol. xxxviii. pt. 2, 1869, p. 105, pi. 15. fig. 2. 



Dorsal tubercles very small and numerous, not crowded, inter- 

 mixed with some larger ones, which are sometimes very long and 

 soft ; some with eye-spots. Colour above brown, marbled with 

 large black spots, which are often confluent in a longitudinal 

 direction ; below pale yellow; only the head grey or nearly black. 

 Also in this species the dorsal eye-spots are grouped to 2-3 

 on large retractile tubercles, as in the preceding and the 

 following species. 



Sullivan Island. Port Canning. 



