6 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



fauna that they are to be considered as belonging to the East Indian 

 fauna to a large extent. They are Gaspar Straits, North Pacific 

 Exploring Expedition, Capt. Rodgers; Nero station 1466 off Guam, 

 Tuscarora station, 27° 16' N.; 141° 56' E., in 108 fathoms, and 

 Albatross H4882 at the station in Colnett or Vincennes Strait, where 

 so many southern species were found. 



SPIRILLINA LIMBATA H. B. Brady, var. PAPILLOSA, new variety. 

 Plate 2, fig. 4. 



Description. — Test small, composed of a few coils, dorsal side with 

 the borders of the coil decidedly carinate, and more or less regularly 

 wavy, center depressed ; periphery sharply angled at the dorsal margin, 

 rounded at the ventral margin, obliquely sloping to the ventral margin 

 which is of smaller diameter than the dorsal; ventral surface strongly 

 papillose, apertural end of the coil cut back so that the periphery is 

 considerably extended. 



Diameter about 0.3 mm. 



Distribution. — Type-specimen from Nero station 2039 in 24 fath- 

 oms, near the Hawaiian Islands. (Cat. No. 9023, U.S.N.M.) 



This variety differs from the typical in the fewer chambers, more 

 prominent and wavy carina, and the papillose ventral surface which 

 in the typical form is smooth. 



Specimens of this variety were later obtained from Nero station 

 1466 in 234 fathoms off Guam, and from Tuscarora station 2, lat. 27° 

 16' N.; long. 141° 56' E., in 108 fathoms. 



SPIRILLINA INiEQUALIS H. B. Brady. 



Plate 3, fig. 3. 



Spirillina inxqualis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 278, 

 pi. 8, fig. 25a, b; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 631, pi. 85, 



figs. 8-11. — Egger, Abh. kon. bay. Akad. 

 Wise. Miinchen, CI. n, vol. 18, 1893, p. 394, 

 pi. 18, figs. 40-42. — Millett, Journ. Roy. 

 Micr. Soc, 1903, p. 693.— Rhumbler, Zool. 

 Jahrb., Abt. Syst., vol. 24, 1906, p. 34, pi. 2, 

 fig. 12. — Chapman, Proc. Roy. Soc. Victoria, 

 vol. 22, 1910, p. 282. 



Description. — "Test free or ad- 

 herent, discoidal, relatively thick; 

 a consisting of four or five convolu- 



Fig. 6.— Spirillina inaequalis H. B. Bkadt. , . ° . „ 



x 120. o, front view; 6, side view, tions ; interior (adherent) surface 

 (adapted from Brady.) flatj broader than the superior; su- 



perior face concave, or excavated at the umbilicus; periphery oblique, 

 margin acute or subcarinate. Shell-wall coarsely perforated ; surface 

 uneven, often decked with slightly raised bosses or tubercles. 

 "Diameter 1 /80th inch (0,3 mm.)." 



