70 Mr. H. Fulton on the 



3. A. inversus, M tiller, Hist. Verm. ii. p. 93. no. 290 ; Chem. 



ix. p. 93, pi. ex. figs. 925, 926. 



=jayanu8, Lea, Proc. Phil. Soc. rhilad. 1841, ii. p. 31. 



=contmus, lieeve, Con. Icon., Bui. fig. 220. 



= elonr/atus, Homb. et Jacq. Voj. au Pole Sud, 1854, pi. viii. figs. 3,4. 



=annamiticus, Crosse et Fischer, Jo urn. de Conch. 1863, p. 357, and 



1864, pi. xii. fig. 8. 

 = andamanensis (Mouss. MSS.), Pfeiffer, Novit. Conch, no. 707, 



pi. cxvi. figs. 7-10. 



Loc. Singapore, Malacca, Siam, Sarawak, and Sirhassen 

 Island. 



Variable in size and also somewhat in form, but easily 

 distinguished by its coloration. The andamanensis was 

 described by Pfeiffer from three small specimens from 

 Mousson's collection bearing a label with the locality Anda- 

 man Islands ; but this species has never been found there : 

 the small form has been found at Sarawak and Sirhassen 

 Island by Mr. Everett ; it is generally of a darker colour 

 than the larger forms, three specimens in the Geneva Museum 

 being almost black. 



Dr. Mollendorff's annamiticus, var. roseotincta, is without 

 the usual dark brown fillet at apical whorls, the apex being 

 uniformly rose-coloured. I find, however, that this slight 

 character is not constant. 



4. A. alticola (Boettger, MSS.), Fulton. (PI. VI. figs. 5, 



5 a.) 



Loc. Java. 



Dextral and sinistral, thin, obliquely striated, uniform 

 yellow, shining, impressed with a thread-like white fillet at 

 the suture ; umbilicus almost or completely covered ; lip 

 white, somewhat reflected ; columella either erect, arcuate, or 

 somewhat distorted ; whorls 6, slightly convex, last whorl 

 equal to two thirds of whole length of shell. 



Long. 37 millim., maj. diam. 20 millim. 



Easily separated from all other known species of this group 

 by its small size, narrow form, and thin substance. 



Group of A. janus. 



5. A. janus, Pfeiffer, Proc. Zool. Soc. 1852 ; Chem. ed. ii. 



pi. xlviii. figs. 1-4. 



Loc. ? (not New Hebrides) . 



In Mousson's collection I saw two specimens quite agreeing 

 with janus, except that the characteristic spiral bands were 



