from the Philippine Islands. 351 



Numerous specimens ot" the typical form of this species 

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

 which probably merely indicate colour-variation. They may 

 be thus described : — 



o. 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. 



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



rich brown linos, forming blotches above tlie 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 otlier 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. Opisthoporus quadrasi, Hidalgo. 

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



10. Leptopoma vitreum. Lesson. 



Several varieties of this species occur in Palawan. Some 

 are white with fine pellucid spiral lines ; in others the latter 



