Marine Shells from Henderson Island. 411 



Conus hebraaus, Linn., and var. Area maculata, Soioerby. 



vermiculatus, Lamk. (.Year) domingensis, Lamarck. 



miliaria, 1 1 truss. (Barbatia) parva, Soioerby. 



ceylonensis, Hwass, var. Pecten pallium, Linn. 



nanus, Brod. coruscans, Hinds. 



tessellatus, Born. Lima bullifera, Deshayes. 



rattus, Hwass. Spondylus sp. 



penuaceus, Horn, var. episco- Lucina (Codakia) divergeus, Phi- 



pus, Lamk. lij>/>i. 

 solidus, Sowerby. Libitina guinaica {Chemnitz). 



glims, Hwass, var. tenui- Tellina scobinata, Linn. 



striatus, Soioerby. A slender Semele australis (Sotoerby). 



form of this variety. Corculum productum (Deshayes). 



tulipa, Linn. Tridacna crocea, Lamarck. 



Bulla sp. juv. squamosa, Lamarck. 



Melampus luteus (Quoy $• Gai- Chama jukesii, Reeve, 

 mard). 



Notes on a few of the Species. 



Morum ponderosum (Hanley). 



Oniscia ponderosa, Hanley, Proc. Zool. Soc. 1858, p. 265, pi. xlii. 



figs. 9, 10. 

 Oniscia exquisita, Trvon (non Adams and Reeve), Man. Concb. vol. vii. 



p. 282, pi. x. fig. 22 (copy of Hanley's fig. 10). 



It is interesting to know the locality of this rare species, 

 the habitat being hitherto unrecorded. It is quito distinct 

 from the Oniscia exquisita of Adams and Reeve *, with 

 which it has been incorrectly united by Tryon. 



Morum exquisitum was dredged in 16-20 fathoms in the 

 Sooloo Archipelago, which is very remote from Henderson 

 Island. 



M. ponderosum differs from M. exquisitum in its less 

 elevated spire, the absence of granules on the columellar 

 callus (which is not of a rosy-purple colour), in the thickened 

 labrum being peppered with red dots on the outside, and the 

 lirse within, which do not extend across the front of it. The 

 columellar side of the aperture is transversely lirate within 

 throughout the whole length, a feature which does not appear 

 to be present in the Sooloo species. The apex of the spire in 

 the latter is red, whereas in ponderosum it is white, and the 

 concavity of the upper part of the whorls is finely spirally 

 striated, which does not appear to be the case in M. exqui- 

 situm. 



* Vov. ' Samarang,' Zoology, Mollusca, p. 35, pi. v. figs. 3 a-b ; Reeve, 

 Concb. Icon. vol. v. tig. 3. 



30* 



