bartsch: classification of helicinidae 657 



Two species and a subspecies are known of the unhanded forms. Of 

 these one, Geophorus (Diplopinax) lazarus Sowerby, is a broadly conic, 

 medium-sized shell that comes from the region of Bongabong, Nueva 

 Ecija, Luzon. A cotype of this, collected by Cuming, Cat. No. 302740, 

 has 4.9 whorls and measures: altitude, 5.9 mm.; greater diameter, 11.6 

 mm. The subspecies, Geophorus {Diplopinax) lazarus transitans Wag- 

 ner, which comes from Libmanan, Ambos Camarines, Luzon, is said 

 to have measured: altitude, 7 mm.; greater diameter, 12 mm. The 

 remaining species, Geophorus (Diplopinax) duponanus n. sp., has the 

 shell narrowly conic. The type. Cat. No. 258787, comes from the 

 west shore of Port Dupon, Leyte. It has 5 whorls and measures: 

 altitude, 6.5 mm.; greater diameter, 9.4 mm. 



In the preceding synopsis of the Philippine members of the genus 

 Geophorus, all but the following three known forms, of which no speci- 

 mens were at hand, have been heated. I suspect that all three of these 

 belong to Geophorus in the restricted sense, but shall refrain from as- 

 signing them to a definite position until representative material will 

 make it possible to do so positively. These forms are: Geophorus tro- 

 ckijormis gihhosulus (Mollendorff) Wagner cited from Tayabas, Luzon; 

 Geophorus agglutinans solidulus (Mollendorff) Wagner, from the island of 

 Lubang; and Geophorus acutus intermedius (Mollendorff) Wagner from 

 the island of Cebu. 



