SHIPWORMS OF THE PHILIPPINE ISLANDS BARTSCH 537 



obtained on the same expedition from a piece of wood at station 

 5191, in 258 fathoms on green mud bottom, temperature 62.8°, in 

 Tanon Strait, off Refugio Island. This is entered as Cat. No. 310967, 

 U.S.N.M. 



I take pleasure in naming this species for Rear Admiral Marbury 

 Johnson, who was in command of the Albatross at the time of the 

 expedition. 



BANKIA (NEOBANKIA) BARTHELOWI, new species 



BARTHELOW'8 SHIPWORM 



Plate 58, figs. 1, 2, 3 



Of the present species, only throe pallet-; are known, the two 

 larger of which belong to the same individual, which I shall designate 

 as type. These are of the cone-in-cone type, with the outer margin 

 forming a shallow cup, while the inner face is much produced and 

 about three times the height of the outer. The outer margin of the 

 segments is beautifully denticulated, while the inner is smooth. 

 These pallets are so characteristic that T do not hesitate to describe 

 the species therefrom. 



They measure: Length. 7.7 mm., of which 2 mm. go to the stalk; 

 diameter, 1.2 mm. 



They were obtained from the same piece of wood from which the 

 type of Bankia (Neobanlcia) johnsoni was secured at station 5266, in 

 100 fathoms on mud bottom in Batangas Bay, Luzon. Thev are 

 Cat, No. 310968, U.S.N.M. 



A couple of loose pallets obtained from a piece of wood collected 

 by the Albatross at station 5252, in 28 fathoms on coral bottom, off 

 Linao Point, Gulf of Davao, appear to belong to this species. 



The species is named for the late Benjamin Barthelow, executive 

 officer of the Albatross during her cruise on the Philippine Expedition. 



Subgenus Bankiella Bartsch 



1921. Bankiella Bartsch, Proc. Biol. Soc. Washington, vol. 34, p. 2(i. 



1922. Bankiella Bartsch, Bull. 122, U. S. Nat, Mus., p. 10. 



Pallets consisting of a series of cone-in-cone elements covered by a 

 thin membrane which is neither fimbriated nor denticulated at the 

 free margin, but entire. 



Type. — Bankia {Bankiella) mexicana Bartsch. 



BANKIA (BANKIELLA) DAVAOENSIS, new species 

 DAVAO SHIPWORM 



Plate 53, figs. 2, 4; plate 56, fig. 3; plate 58, figs. 4, 5, 6 



Shell small, subglobular, white. Anterior area rather broad with- 

 out a strong callus at its extreme anterior sinus, marked by very strong 

 and strongly denticulated dental ridges which slope more abruptly 

 dorsally than ventrally. Of these ridges 35 are present in the type. 



