4 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



veaux provenant les isles Philippines. 1 In this, Amphidromus 

 quadrasi is described and figured (pi. 2, fig. 2), from Caramandanes 

 Island. 



The following year the same author reached the present genus in 

 his series of papers entitled Recherches conchyliologiques de M. 

 Quadras aux iles Philippines. 2 He discusses these Philippine forms 

 (pp. 31-34). 



He figures (pi. 6, fig. 1) the variety of Amphidromus macuUf- 

 erus which is now named A. philippinensis. He assigns the yellow 

 and pale form of what was later described as A. entobaptus Dohrn 

 to Amphidromus per versus Linnaeus and refers at length to A. 

 chloris and corrects the locality name given in the previous volume 

 for Amphidromus quadrasi from Caramandanes to Candaramanes 

 Island, a member of the Balabac group. 



He also lists Amphidromus contrarius Muller from Balabac and 

 Luzon. The second citation is undoubtedly due to a market specimen, 

 as Amphidromus does not occur on Luzon, and the first may also be 

 a market shell or else a form of the A. quadrasi group. A. contrarius 

 Muller belongs to Timor. 



In 1889 Dr. Heinrich Dohrn's Beitrag zur Conchylienfauna der 

 Philippinischen Insel Palawan appeared. 3 In this the yellow Am- 

 phidromus from the region of Puerto Princesa is described as Am- 

 phidromus entobaptus. The next year the first part of Joaquin Gon- 

 zalez Hildago's Obros Malacologicos 4 appeared. On pages 17-18 

 the description of A. quadrasi Hidalgo is published. 



In 1893 Edgar A. Smith published his report On a Small Collection 

 of Land Shells from Palawan and Balabac, Philippine Islands. 5 



Here four figures (10-13, pi. 18) are given of A.mphidromus quad- 

 rasi and forms a — /, described from a series of a hundred specimens 

 from Balabac. The same year Otto Franz von Mollendorff's Mate- 

 rialien zur Fauna der Philippinen XI Die Insel Leyte appeared. 6 

 In this Amphidromus macuUferus multicolor is described from Leyte 

 and Camotes. 



The following year Edgar Albert Smith published his report On 

 the Land Shells of the Zulu Archipelago. 7 In this (p. 55) he de- 

 scribes and figures (pi. 4, figs. 9, 9a) a variety of Amphidromus 

 macuUferus from Bilitan Island, which is now named A. philippinen- 

 sis Fulton. 



1 Journ. d. Conch. Paris, vol. 35, 1887, pp. 36-37. 



Mdom, vol. 36, 1888. 



8 Nachr. Deut. Malak. Ges., vol. 20, pp. 53-63. 



* Mem. Real Acad. Clen., Madrid, vol. 14. 



'Ann. Mag. Nat. Hist. London, ser. 6, vol. 11, 1893, pp. 347-353. 



« Berlcht, Senck. Natuz. Ges. Frankfurt am Main, 1893. 



7 Ann. Mag. Nat. Hist., ser. 6, vol. 13, 1894. 



