from the Philippine Islands. 351 



Numerous specimens of the typical form of this species 

 were collected bj Mr. Everett, besides a number of other forms 

 which probably merely indicate colour-variation. They may 

 be thus described : — 



a. Green, with a deep rose-coloured band at the suture and 

 around the base of the lilac columella (typical form). 

 (Fig. 10.) 



h. Yellow, with similar band at suture and base ; colu- 

 mella lilac. 



c. Yellow, without sutural band, with a broad green band 



on the back of the body-whorl behind the lip ; colu- 

 mella pale pink. (Fig. 11.) 



d. Uniformly yellow, faintly streaked with green ; colu- 



mella white. 



€. Yellow, with the spire ornamented with oblique, wavy, 

 rich brown lines, forming blotches above the suture, 

 and with a similar green band as in the preceding 

 form ; columella pale pink. (Fig. 13.) 



f. Very dark chestnut, almost black, but pale at the suture, 

 with oblique wavy white streaks, which are inter- 

 rupted at the middle of the body-whorl. A yellowish 

 zone occurs below the periphery and a pinkish one 

 around the base of the columella. The lip is blackish 

 and the columella bluish white. (Fig. 12.) 



The above are a few variations in colour illustrated by six 

 specimens selected from a hundred. Other slight variations 

 were observed in many other examples. The ground-colour 

 varies from bright green to bright or pale yellow, with all 

 shades of intermediate tints. The form^, of which there was 

 but one specimen, is most strikingly abnormal. It has a 

 black lip, whereas in all the rest it is white. However, in 

 two specimens in the Museum marked Borneo, which I believe 

 belong to this species, it is almost black. 



Similar great differences in colour occur in A. Adamsii, 

 Reeve. 



9. O^nsthoporus quadrasi, Hidalgo. 

 Hub. Palawan {Hidalgo, Dohrn, and Everett) . 



10. Leptopoma vitreum, Lesson. 



Several varieties of this species occur in Palawan. Some 

 arc white with line pellucid spiral lines ; in others the latter 



