SHIPWORMS OF THE PHILIPPINE ISLANDS BARTSCH 547 



portion of the hoofs of a sheep, are placed, with the toe end extending 

 into the cup before mentioned. These two elements are separated 

 by a deep groove. The inside of the expanded portion is triangular in 

 shape and the distal margin has a moderately deep cut in its middle. 

 The type (Cat. No. 312922, U.S.N.M.) comes from a piece of wood 

 collected by the United States Bureau of Fisheries Steamer Albatross 

 Philippine Expedition, at station 5252 off Linao Point, Gulf of Davao, 

 Mindanao in 28 fathoms on coral bottom. It measures: Height, 1.4 

 mm.; length, 1.3 mm.; diameter, 1.2 mm. Pallet measures: Length, 

 1.5 mm., of which 0.8 go to the stalk; diameter, 0.7 mm. The species 

 is named for the late Frederick M. Chamberlain, naturalist of the 

 Albatross during her Philippine cruise. 



TEREDO (UNGOTEREDO) PUJADANA, new species 

 PUJADA SHIPWORM 



Plate 54, figs. 8, 10; plate 57, fig. 3; plate 60, figs. 1, 2, 3 



Shell small, subglobular, the anterior part with a moderately broad 

 sinus which is bordered by a narrow smooth callus. Radiating from 

 this callus are strong broad denticulated ridges which equal those of 

 the anterior median portion in strength. Those on the early part of 

 the shell have been worn away and only about a dozen near the 

 ventral margin remain. These are separated here by grooves a little 

 narrower than the ridges at their posterior margin, and they are finely 

 denticulated at the free border, the grooves demarking the denticles 

 passing down both dorsally and ventrally over the ridge. The 

 anterior median portion is exceedingly broad and is marked by 31 

 dental ridges in a straight line projected from the ventral margin of 

 the anterior part. All but the anterior eight are badly worn; these 

 have rather broad denticles. The median middle portion is narrow and 

 slightly concave and here is where the shell terminates. The posterior 

 median and auricular portion are not present and have probably been 

 eroded. Interior showing the external sculpture by transmitted 

 light. The anterior and median part meet in a straight suture. 

 There is no indication of a posterior auricle on the inside. There is 

 a strong knob on the anterior median portion and a long, somewhat 

 twisted and sinuous blade extending from under the umbone. The 

 pallets are rather large, paddle-shaped; the stalk is slender, twisted, 

 and slightly nodulose basally. On the outside the basal expanded 

 portion is lunate; a strong deep groove separates this part from the 

 doubly cup-shaped distal area, the two cups being separated by a 

 deep groove. On the inside the pallets are slightly concave, marked 

 by numerous fine incremental lines with a mere indication of a median 

 sinus at the distal end. 

 27565— 27f 2 



