292 The Philippine Journal of Science vm 



Tayabas Province, Luzon. These are all quite like those de- 

 scribed by Martin from Java. 



Locality : White cliffs on Minanga River, Cebu, No. 277. 



Formation: Mio-Pliocene limestone. 



SCAPHOPODA 



SOLENOCONCH^l 



DENTALIUM Linnaeus 



Shell tube shaped, elongated, conical, symmetrical, somewhat 

 bowed, gradually tapering toward the posterior end; open at 

 both ends; exterior surface longitudinally striated, ribbed, or 

 smooth ; anterior opening simple not constricted, posterior small. 

 Numerous, mostly large, species occur in the Miocene and Plio- 

 cene. (Zittel.) 



Dentalium tumidum sp. nov. Plate XIX, fig. 2. 



The fragment figured here is only about 2 centimeters long, 

 but it is believed that it is sufficient to show the characters of 

 the species. The unusual cross-section showing the lateral bulg- 

 ing and thickening of the walls is apparently quite unique. I 

 have been unable to locate any specimen or illustration of any 

 form just like it, so I have given it the specific name tumidum to 

 note this prominent character. 



This specimen is longitudinally striated like many other species 

 of Dentalium, At the widest part the diameter is 12 millimeters ; 

 along the shorter diameter, 9 millimeters. The shell tapers 

 gradually as in other species of the genus. 



Locality: Agusan River, Mindanao, No. 1054. 



Formation : Pleistocene or Recent shales. 



PLATYPODA 



VERMETIDiE 



VERMETUS Adanson 



Shell usually attached, irregularly tubular, internally vitreous, 

 and often with septa. Carboniferous (?) to Recent. Abundant 

 in the Tertiary. (Zittel.) 



Vermetus giganteus K. Mart. Plate XIX, fig. 5. 

 Tertiarscht. auf Java (1880), 78, PI. XIV, fig. 15. 



An almost identical form from Java is figured by Martin under 

 the name of Septarea arenaria Linn., but in the text he calls it 

 V. giganteus n. sp. 



