56 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Distribution — Records for this species are very rare. From the 

 Ohallenger material Brady records it south of Rockall Bank in 640 

 fathoms and west of the Azores, 1,675 fathoms, and in tiie South 

 Atlantic south of Pernambuco, Brazil, 350 fathoms. I have some- 

 what doubtful material from Albatross station D2212, in 428 fathoms, 

 bottom tomperatui'e 40° southeast of Nantucket Shoals. 



In other oceans it is known from the North Pacific (Brady) 

 Malay Ai-chipelago (Millett), Indian Ocean west of Australia (Egger) 

 and off New Zealand (Chapman). 



PELOvSINA RECTA, new species. 



DescHption. — Test free, elongate, the ends rounded, the sides 

 nearly parallel, slightly tapering toward either end, compressed; 

 wall of considerable thickness, composed for the most part of fine 

 mud cemented together with a smooth surface, the interior also 

 smooth, with a thin chitinous lining, somewhat yellowish in color; 

 aperture at the end, rounded or somewhat elongate in the line of 

 compression, without any trace of a neck, color grayish. 



Length, up to 12 mm.; breadth, 3 mm. 



Distribution. — Type-specimens from Albatross station D2084, in 

 1,290 fathoms (40°16'50" N.; 67°05'15" W.), bottom temperature 

 40°F. (Cat. No. 10001, U. S. N. M.). At tliis station several specimens 

 all of this sort were found but none were found elsewhere. It is 

 evidently a Pelosina from the construction of the test and its chitinous 

 lining, but there is no neck and the opening is directly into the body 

 of the chamber. 



PELOSINA PARVA Rhumbler. 



Plate 21, fig. 3. 



Pelosina parva Rhumbler, Foram. Planktou-Exped., pt. 1, 1909 (1911), pi. 1, 

 fig. 3; pt. 2, 1913, p. 374. 



Description. — Test bottle shaped with lower end broad and 

 rounded, bent more or less like a half moon, sand grains sparsely 

 laid in the wall ; single grains protrude sharply like short spines over 

 the wall. 



Length, up to 1 mm. 



Distribution. — Locality near St. ^'in('ont, 4980 (J. No. 139), fv\s', 

 mostly broken, specimens. 



This new form is the smallest of the known species of the genus, 

 in the point of size the nearest is P. rotundata Brady (1.8 mm.), 

 which is distinguished from it by a sharply defined flask-shaped 

 pouch. It roniiiuls one of the hirgor (12 mm.) f\ cjlindricn Brady. 



PELOSINA AHBOKESCENS Peaney. 



Plate 23, lige. 1, 2. 



Pelosina arborescens Pearcey, Trans. Roy. Soe. Edinburgh, vol. 49, 1914, p 

 1001, pi. 1, figs. 1-5. 



