208 112 



Tellina Lilium, Hanley, Römer in Martini u. Chemnitz, Conchyl. Cabin., XBd., 4 Abtli , p. 253, No. 157, 



pi. 48, figs. 4—6. 

 Macoma liïinm, Hanley, V. Bertin, Revision d. Tellinidés, p. 337, No. 12. 



— Lilium, — HiDALdo, Fauna malacol. de 1. Isl. Filipinas, U, 1903, p. 160, No. 279. 

 Tellina donaciformis, Deshayes, Proc. Zool. Soc. London, 1854, p. 3.'i7, No. 182. 



— donacinifonnis, — Reeve, Concliol. icon., XVII, Tellina, Sp. 299. 



— I Huniala) donaciformis, Deshayes, V. Bertin, Revision d. Tellinidés, p. 290, No. 178. 

 (Donax) Tellina Essingtonensis, Deshayes, Reeve, Conchol. icon., XVII, 1866, Tellina, Sp. 73. 

 Macoma Essingtonensis, Deshayes, V. Bertin, Revision d. Tellinidés, p. 342, No. 26. 



E. of Koh Mak, 20 fathoms, mud ('/s). Between Koh Kut and Koh Kahdat, 

 6 — 10 fathoms, clay and shells (2 + '''/a). W. of Koh Kut, 30 fathoms, sand and 

 mud ("/s). 



Long. 10 — 18 mm. 



Distribution:— Singapore (2 — 3 fathoms, Danish Exp. to Siam). — Philip- 

 pines, Torres Strait, Port Essington, Lane Cove (Port Jackson), Isl. Ravvak (Freycinet). 



Tellina (Macoma) Moluccensis, Mart. 



Tellina Moluccensis, E. v. Martens, Annals and Magaz. of Nat. Hist., 3 Ser., vol. 16, 1865, p. 430, No. 5. 



— (Metis) Moluccensis, E. v. Martens, Römer in Martini u. Chemnitz, Conchyl. Cabin., XBd., 4 Abth. 



p. 213, No. 129, pi. 41, figs. 4-6. 

 Metis Moluccensis, E. v. Martens, V. Bertin, Révision d. Tellinidés, p. 332, No. 13. 



Surface mud along the coast of Lem Ngob, low tide ('/a). Coast of Lem Ngob, 

 low tide, stones (^/a). 



Long. 17 mm., alt. 13 mm. 



Distribution: — Moluccas. 



I have referred the present species to the subgenus Macoma; it is difficult to 

 understand why previous authors have referred it to the subgenus Metis. 



Tellina (Macoma) tenuisculpta n. sp. 



(PI. IV, Figs. 3—5). 

 The valves of this species are triangular in form, white and rather thin, and 

 compressed; they are somewhat gaping at the ends, epecially the posterior end. 

 The umbones are situated at about the middle of the axis of the shell, the upper 

 margin slopes abruptly down on both sides, the posterior end is prolonged some- 

 what in an acute, rostrum-like manner, and the ventral side is gently curved. The 

 different individuals exhibit a more or less distinct "Tellina-curvature." The sur- 

 face is covered with narrow, close-set, finely crenulated, concentric, raised lines which 

 are irregular and at different mutual distances. The interstices between the concen- 

 tric striæ are closely set with fine, irregular radial folds and striæ which are not all 

 equally fine; this sculpture gives a rough appearance to the surface. The interior 

 of the valves is white and somewhat glossy. The right valve has two cardinal 

 teeth of which the hinder is the larger and is bifid; the left valve has also two 

 cardinal teeth, the anterior is stout and bifid while the posterior is slender. The 



