466 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



broadest near the middle, tapering toward either end, with a slightly- 

 thickened cylindrical neck; the surface of the test smooth dull matt, 

 cream white. 



Diameter 1.6 mm. 



Distribution. — ^Type specimen (Cat. No. 10801, U. S. N.M.) from 

 Albatross station D5236, Pacific Ocean, east coast of Mindanao, in 

 494 fathoms (903 meters), bottom temperature 41.2° F. (5.1° C). 



This is a peculiar but very well-characterized species, with its 

 triangular form, matt surface, and sharp angles. 



It is named for Dr. Paul Bartsch, of the United States National 

 Museum, who was in charge of the Philippine collecting of the Alba- 

 tross during the early part of her Philippine cruise. 



Flintina bartschi — Material examined. 



FLINTINA TRIQUETRA (H. B. Brady). 



Plate 94, figs. la-c. 



ifiliolina triquetra H. B. Bradt, Quart. Joum. Micr. Soc, vol. 19, 1879, p. 54; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 181, pi. 8, figs. 8-10.— Heron- 

 Allen and Earland, Trana. Zool. Soc. London, vol. 20, 1915, p. 581, pi. 44, 

 figs. 22, 23. 



This species, with a planospiral character in the adult, with three 

 chambers making up a whorl, belongs to Flintina, as here described. 

 It is rare at Albatross station D5214, east of Masbate Island, in 218 

 fathoms (399 meters), the bottom temperature, 51.4° F. (10.8° C). 



Heron-AUen and Earland record is as "very finely developed off 

 Cebu, Pliilippine Islands; 120 fathoms (220 meters)." 



Brady's original records are from three Challenger stations — ^Bass 

 Strait, 38 fathoms (70 meters); Torres Strait, 155 fathoms (283 me- 

 ters); and Humboldt Bay, New Guinea, 37 fathoms (68 meters). 



It is a rare species from the records, largely limited to Australia 

 and the East Indian region, and found also in the Kerimba Archi- 

 pelago, where Heron-AUen and Earland record two specimens. 



Flintina triquetra — Material examined. 



