40 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Description. — Test composed of a globular proloculum followed, at 

 least in the megalospheric form, by a second Coriluspira-like chamber 

 a half coil in length, in turn followed by a series of two or three or 

 more usually pyriform or subcylindrical chambers, the basal end 

 being usually the broadest, tapering gradually to the apertural end; 

 aperture simple, rounded occasionally with a somewhat thickened lip. 



Length, usually less than 1 mm. 



Distribution. — Among other localities Brady mentions the follow- 

 ing Challenger records for the North Pacific: off the Philippines in 95 

 fathoms, and Inland Sea of Japan, 15 fathoms, not common. 



NODOBACULARIA IRREGULARIS Rhumbler. 



Plate 8, fig. 3. 



Nodobacularia irregularis Rhumbler, Zool. Jahrb., Abteil Syst., vol. 24, 1907, 

 p. 38, pi. 2, fig. 15. 



Description. — Test composed of an oval proloculum with a second, 

 Cornuspira-like chamber a half coil in length, with the following 

 chambers irregularly pyriform, extending back and on one side at 

 least covering the distal portion of the previous chamber, apertural 

 end tapering; wall smooth, aperture in later chambers complex, with 

 a pore plate with numerous pores in addition to which there may be 

 secondary apertural openings, usually near the outer angle of the 

 base of the chamber but irregularly placed. 



Length, 0.7 to 0.8 mm. 



Distribution. — Rhumbler described this species from Laysan. 



As noted by the author of the species this is somewhat intermediate 

 between Nodobacularia and Nubecularia except that the chambers 

 are uniserial. The irregularity and secondary openings are some- 

 what more like Nubecularia. 



Genus NUBECULARIA Defrance, 1825. 



Nubecularia Defrance, Diet. Sci. Nat., vol. 35, 1825, p. 210 (Type N. lucifuga 

 Defrance). — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 

 133. 



Description. — Test typically coiled, planospiral, free or attached, 

 consisting of an oval proloculum and second Cornuspira-like chamber 

 of variable length, followed by several chambers irregular in shape 

 and arrangement, but usually more or less distinctly planospiral, 

 apertures one or more, irregularly arranged, wall smooth, roughened, 

 or with incorporated sand grains. 



As a rule the species of this genus are typical of the shallow waters 

 of tropical and subtropical seas, attached to various objects or becom- 

 ing free. The test is porcellanous and imperforate and the early 

 stages show it to be a degenerate type from perhaps different sources 

 within the family. The test, as is the case in so many attached forms, 

 becomes highly irregular. 



