NO. 21 FOURTEEN NEW SPECIES OF FORAMIXIFERA CUSHMAN 3 



a very large part of the apertural view, greatest breadth at the a])er- 

 tiiral end ; chambers distinct, becoming somewhat inflated in the adult; 

 sutures distinct, depressed; wall largely composed of fragments of 

 sponge spicules firmly cemented and forming a rather neatly finished 

 test on the exterior ; aperture elongate, narrow, at the base of the inner 

 margin of the last-formed chamber. Length 0.85-1.20 mm; diameter 

 0.55-0.65 mm. 



Holotypc. — U.S.N.jM. no. 26185; from station 93, latitude i8°38' 

 00" N., longitude 65°09'3o" W. to latitude i8°37'45" N., longitude 

 65°o5'oo" W., 350 to 400 fathoms. 



This is a unique species in the peculiar shape of the test and the 

 unusual character of the wall. It is rather common in some of the 

 dredgings from the Puerto Rican Deep. 



GAUDRYINA d'Orbigny, 1839 

 Subgenus SIPHOGAUDRYINA, n. subgenus 



Subgenotype. — Gaudryina ( Siphogaudryina) stephensoni Cushman. 



Te.st with the early stages triserial, usually triangular with sharp 

 angles, one of the ridges becoming divided and forming a quad- 

 rangular test with four distinct angles, usually somewhat compressed 

 with two narrow sides and two broad sides, one of which is somewhat 

 wider than the other, the angleS frequently expanded into fistulose 

 processes, which become broken on the exterior, showing a row of 

 openings along the angles of the test, end view usually quadrangular. 

 Upper Cretaceous to Recent. 



GAUDRYINA (SIPHOGAUDRYINA) COMPRESSA, n. sp. 



Plate I, figs, ga, gb 



Test about twice as long as broad, much compressed, the flattened 

 sides showing the biserial arrangement very broad, the other two sides 

 narrow, truncate, angles with tubular projections usually broken at the 

 tip, showing a double series of openings, apertural end obliquely trun- 

 cate ; chambers numerous, low and broad, increasing gradually in size 

 as added, only slightly inflated, triserial in the young stages, and 

 biserial in the adult; sutures distinct, very slightly depressed, nearly at 

 right angles to the elongate axis ; wall finely arenaceous with a few 

 coarse fragments, a large proportion of cement giving a fairly smooth 

 surface; aperture narrow, elongate, in a distinct reentrant at the inner 

 margin of the last-formed chamber. Length 0.50-0.60 mm ; breadth 

 0.28-0.32 mm ; thickness 0.15-0.20 mm. 



