98 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



ous, consisting of a series of elliptical openings in a single row along 

 the apertural face, each opening with a slight ridge about it. 



Diameter, about 0.75 mm. 



Distribution. — Brady records this species from off the Hawaiian 

 Islands and this stands as the only record for the North Pacific. 

 This is a rather isolated station as the nearest record given by Brady 

 is Ceylon and this species does not seem to be found with the previous 

 one in the East Indian region as it is in the West Indies. 



It appears from these indications only that possibly there are 

 more than two recent species, but without access to the material it is 

 impossible to do more than suggest this as a possibility. 



ALVEOLINA BOSCH (Defrance). 

 Plate 39, fig. 3. 



Oryzaria boscii Defrance, Diet. Sci. Nat., vol. 16, 1820, p. 104. 



Alveolina boscii d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 306, No. 5; Modeles, 

 No. 50.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 222, 

 pi. 17, figs. 7-12. — Chapman, Journ. R,oy. Micr. Soc, 1908, pp. 151-153, pis. 

 1, 2, text. fig. 31. 



Description. — Test elongate, fusiform, coiling on its longitudinal 

 axis, the chambers very long, extending the whole length of the test, 

 complex, transversely striate, apertural face forming the growing 

 edge of the test, flattened; apertures very numerous, consisting of 

 fine circular pores with raised borders scattered over the whole sur- 

 face of the apertural face. 



Length, 1.5 mm., in some regions up to nearly 1 inch. 



Distribution. — The only North Pacific record for this species is 

 that given by Brady, material taken by the Challenger in 40 fathoms, 

 from the coral reefs of Honolulu, Hawaiian Islands. These speci- 

 mens were small. I have had small specimens from Tuscarora sta- 

 tion 60 in latitude 21° 14' N.; longitude 157° 36' W. in 63 fathoms, 

 also in the vicinity of the Hawaiian Islands. 



In the East Indian and Philippine regions this species grows to 

 large size, nearly an inch in length. Both microspheric and megalo- 

 spheric forms occur, the very large specimens being microspheric as 

 shown by Chapman. 



