186 90 



Scintilla Candida, Desh. 



Scintilla Candida, Dkshayes, Proc. Zool. Soc. London, 1855, p. 177, No. 17. 



— — — SowEHBY, Thesaur. Conchyl., Ill, p. 177, No. 17, pi. 235, fig. 33. 



— — — SowKHBY in Reeve, Conchol. icon., XIX, Scintilla, Sp. 6. 



Koh Kahdat, 1 fathom, sand (3). Koh Kahdat, 1—2 fathoms, corals (2). North 

 end of Koh Chang, 12 fathoms, old coral blocks (3). 

 Long. 25 — 11-5 mm. 

 Distribution: — Gulf of Manaar. — Philippines. 



Scintilla Philippinensis, Desh. 



Scintilla Philippinensis, Deshayes, Proc. Zool. Soc. London, 1855, p. 176, No. 14. 



— — - H. &A. Adams, Genera of rec. MolL, 1858, II, p. 480, pi. 115, fig. 4. 



— — — SowERBY, Thesaur. Conchyl, III, p. 179, No. 3(), pi. 235, figs. 31-32. 



— — — SowERBY in Reeve, Concliol. icon., XIX, Scintilla, Sp. 5. 



Koh Kahdat, 1 fathom, sand (1). 



Long. 9"5 mm., alt. 6 mm. 



Distribution: — Philippines, Sorong (Tapparone Canefri). 



Scintilla hydatina, Desh. 



Scintilla hydalina, Deshayes, Proc. Zool. Soc. London, 1855, p. 177, No. 19. 



— — SowERBY, Tliesaur. Conchyl., Ill, p. 180, No. 39, pi. 235, figs. 5G— 57. 



— — SowEKBY in Reeve, Concliol. icon., XIX, Scintilla, Sp. 38. 



Coast of Lem Ngob, low tide, stones (many specimens). 

 Long, up to 6 mm. 

 Distribution: — Philippines. 



S. Alberti, Smith, * from Torres Strait is very closely related to the present 

 species. 



The accompanying figure drawn from a sketch of Scintilla hydatina, Desh., 

 made by Dr. Th. Mortensen from living specimens collected at Lein Ngob, shows 

 that the animal agrees in many points with Mobius's figure (v. Martens, Die Mol- 

 lusken d. Maskarenen u. Seychellen, 

 Berl. 1880, pi. 21, fig. 10) of Scintilla 

 aurantia, Lam. The mantle, which 

 covers both the valves, is pale yellow 

 (the colour being due to numerous 

 Scintilla hydatina, Desh. small, pale yellow drops which are 



present in the mantle), and bears 

 many, comparatively long papillæ, which are contractile; they are smallest in the 

 middle of the valves and become larger towards the margins, where they reach a 

 length of about 2 mm. They do not agree in form with those figured by Möbius 



' Report on tlie zoolog, collections made in the Indo-Pacific Ocean during the voyage of H. M. S. 

 "Alert," 1881—82, Lend. 1884, p. 107, pi. 7, fig. G. 



