59 

 Two species have been observed in the East-Iiulian Archi|jelao;o as yet. 



*i. Cymbuliopsis ovata (Quoy and daimard). 



1832. Cytnbulia ovata Quoy and Gaimard, Voyagc de l'Astrolabe, vol. II, p. 373, pi. 27, 



figs. 25—30. 

 1852. Cytnbulia ovitlaris Rang, Histoire naturelle des Mollusques Ptéropodes, pi. XI, figs. i — 6. 

 1888. Cymbuliopsis ovata Pelseneer, Chall. Rep. LXV, p. 100, pi. II, figs. 15 — 16. 



This species, with short aperture and regularly placed tubercles, was found by OuoY and 

 G.A.IMARD in very large shoals off Amboina. Since then, however, never anj- other locaHty has 

 been recorded, and at Amboina it was never found again, even not by the Siboga Expedition. 



SouLEYET ') thinks that Quoy and Gaimard, figuring the species, were mistaken as to the 

 relative position of the animal to its shell ; in this respect, however, the figure is exact, though 

 otherwise it is not very reliable. Those of Pelseneer are decidedly better, but the animal is not 

 figured, and Pelseneer does not say, whether the specimen which served him for anatomical 

 study, belonged to this species or not. 



2. Cymbuliopsis intermcdia n. sp. (PI. IV, figs. 100 — 104). 



Living animals: 



Stat. 144. Damar Island. i spec. 



Empty shells: 

 Stat. 48. 8° 4' 

 Stat. 166. 2° 28 

 Stat. 167. 2° 3 5 

 Stat. 295. 10° 3 5 

 Stat. 312. 8° 19 



7 S., II 8° 44'. 3 E. I spec. 



.5 S., 131° 3'.3 E. I spec. 



,5 S., 131° 26'. 2 E. 3 spec. 



.6 S., i24°ii'.7E. I spec. 



S., ii7°4i' E. I spec. 



Description: The shell exhibits the usual characters of Cynibtiliopsis. The aperture 

 is always somewhat longer than half the length of the shell. In the distribution of the 

 tubercles I could not observe any regularity; on the aboral surface are some which are smaller, 

 more closely grouped together; at the ventral margin there are none (figs. 102, 104). This 

 character of the shell agrees partly with what is found in Cymbtiliopsis vitrea. Aperture 

 unarmed, thickened lateral sides; these thickenings disappear towards the ventral margin. 

 Tubercles at the oral surface sometimes fused together into mere unevennesses, separated by 

 shallow grooves. Animal as in other species of Cymbuliopsis ; proboscis short and broad, 

 tentacles very short; fins with three distinct systems of muscles; anterior border of the fins 

 scarcely projecting the ventral margin of the shell (almost as in Cynibitliopsis calceola) ; pallial 

 gland twisted to the left, with three transparent bands. 



Dimensions: 39 — 23 mm. Shell of Stat. 144: 30 mm. 



Colour of the shell: Generally transparent, sometimes yellowish, or even dark- 

 brown (alcohol- and formol-specimens). 



l) Hist. nat. d. Moll. Ptéiop. p. 68. 



