24 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



The coloration of this species varies from pure white to pale 

 yellow with reddish brown streaks on the spire, or it may be rose- 

 pink throughout. The three specimens above cited are in the col- 

 lection of the Philadelphia Academy of Natural Sciences. They have 

 a very dark fillet in the suture of the early whorls, which places 

 them in the Amphidromus infiatus group, of which they form the 

 smallest known member. Only two of the three shells are adult and 

 these yield the following measurements, respectively: Number of 

 whorls, 6, and 5.6. Length, 42.4 mm., 39 mm.; diameter, 23 mm., 

 21.5 mm. 



GROUP OP AMPHIDROMUS CHLORIS. 



The group of Amphidromus chloris will probably be found to 

 extend from Mindanao southward over the Sulu Archipelago. From 

 the material examined it is possible to recognize three species — 

 namely, A. chloris, A. roeseleri, and A. suluensis; the first coming 

 from Zamboanga, Mindanao, the second from Jolo, while the ma- 

 terial of the third one examined was listed as coming from the 

 islands of the Sulu Sea. It is quite possible that when a complete 

 exploration of the Sulu Archipelago will be completed that more 

 island races of this group will be discovered. 



AMPHIDROMUS CHLORIS Reeve. 



Plate 1, fig. 4 ; plate 12, figs. 1-6, 8. 



Bulimus chloris Reeve, Conch. Icon., 1848, pi. 37, p. 223. 



Bulimus chloris Pfeiffer, Zeitschr. f. Malak., 1849, p. 137. 



Bulimus chloris Pfeiffer, var. Zeitschr. f. Malak., 1849, p. 137. 



Bulimus chloris Reeve, Zool. Voy. Samarang, 1850, p. 58, pi. 14, fig. 10. 



Amphidromus chloris Albers, Heliceen, 1850, pp. 138-140. 



Bulimus sulphuratus Hombron and Jacquinot, Voy. Ast. and Zelee, Zool., 



vol. 5, 1854, p. 29. 

 Bulimus chloris Pfeiffer, Conch. Cab. Mart. Chem., vol. 1, pt. 13, 1855, 



p. 183, pi. 49, figs. 7, 8. 

 Bulimus (Amphidromus) chloris Pfeiffer, Malak. Blat., vol. 2, 1855, p. 147. 

 Bulimus (Canistrum) chloris, A. and H. Adams, Gen. Rec. Shells, 1858, 



p. 143. 

 Bulimus chloris Pfeiffer, Mon. Hel. Viv., vol. 4, 1859, p. 382. 

 Bulimus sulphuratus Pfeiffer, Mon. Hel. Viv., vol. 4, 1859, p. 382. 

 Bulimus chloris von Martens, Preus. Exp. Ost. Asien, Zool., vol. 2, 1867, 



p. 351. 

 Bulimus sulphuratus Pfeiffer, Mon. Hel. Viv., vol. 6, 1868, p. 26. 

 Bulimus chloris Pfeiffer, Mon. Hel. Viv., vol. 6, 1868, p. 26. 

 Amphidromus chloris Semper, Reis. Arch. Phil., vol. 3, 1873, p. 148. 

 Amphidromus sulphuratus Semper, Reis. Arch. Phil., vol. 3, 1873, p. 148. 

 Amphidromus chloris Pfeiffer, Mon. Hel. Viv., vol. 8, 1877, p. 42. 

 Ami>hi<lromus chloris Hidalgo, Journ. de Conch., vol. 36, 1888, p. 32. 

 Amphidromus pcrversus chloris Fulton, Ann. Mag. Nat. Hist., ser. 6, vol. 17, 



1896, p. 67. 

 Amphidromus chloris Elera, Cat. Sist. Faun. Filip., vol. 3, 1S96, p. 617. 



