THE PHILIPPINE LAND SHELLS OF THE GENUS 

 AMPHIDROMUS. 



By Paul Bartsch, 



Curator, Division of Marine Invertebrates, United States National Museum. 



INTRODUCTION. 



George Brettingham Sowerby, jr., in his Conchological Illus- 

 trations, published between 1832 and 1841, gives the first record of 

 Amphidromus in the Philippine Islands. On plate 145 he repro- 

 duces a front and back view (fig. 100) of Bulinus maculifei^us, 

 stating that the specimens are in Lady Harvey's collection. This 

 plate, we are told by Mr. Sherborn x was published in 1836. A de- 

 scription of this species was furnished five years later by William 

 John Broderip. 2 Here Broderip describes not only the typical form 

 of Bulinus maculiferus Sowerby, but varieties A-F. 



The material reported upon in this paper was collected by Hugh 

 Cuming, who writes: "All the varieties, except variety C, were found 

 in the Province of Misamis, in the islands of Mindanao. Variety C 

 was found at Gindulman in the isle of Bohol. All were taken on 

 trunks of trees." 



In 1848 the greater part of Lovell Augustus Reeve's monograph of 

 the genus Bulimus 3 appeared, and in it we find the following figures 

 and descriptions of Philippine Amphidromi. 



Plate 6, figures 26a and 265, Bulimus maculiferus Sowerby from 

 the Province of Misamis, collected by Cuming. These two figures 

 represent 26a, A. maculife?ms maculiferus, and 26&, A. maculiferus 

 cataganensfe, of the present text. 



Plate 37, figure 223, represents and the text describes Bulimus 

 chlo7'is Reeve. " Eastern Island.'' the locality from whish this speci- 

 men is said to have come, is rather vague, but later references place it 

 in our domain. 



1 Proc. Malac. Soc, vol. 8, 1909, p. 33*. 



2 Proc. Zool. Soc. London, vol. 9, 1841, pp. 14-15. 



3 Conchologia Iconica, vol. 5. 



101825°— Bull. 100—17 1 1 



