82 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Diameter 0.50-1.25 mm. 



This species has been found common in our material from locality 

 2070 but has not been seen elsewhere. 



The very smooth form shown in our pi. 6, fig. 9, occurs abundantly 

 at Station 2014 and somewhat similar ones at 2001. These have been 

 included in above species. 



Distribution. — It is probable that material from depths equal to the 

 record ofif Guadalupe Island in 250 fms. will show a wide range for 

 this species. The records for the smooth form are from near North 

 Isla Partida in 225 fms. 



Haplophragmoides tenuum Cushman 

 Plate 7, Fig. 1 



Haplophragmoides tenuis Cushman, Bull. Scripps Instit. Oceanogra- 

 phy, Tech. Ser., vol. 1, no. 10, 1927, p. 135, f^g. 5, pi. 1. 



Test planispiral, close coiled, compressed, involute, umbilicate, pe- 

 riphery rounded, chambers few, usually six in the last-formed coil, su- 

 tures radial, distinct, slightly depressed ; wall very thin, composed of fine 

 quartz grains with grayish cement giving a translucent appearance, 

 smoothly finished ; aperture a curved slit at the base of the apertural 

 face. 



Length 0.45 mm; breadth 0.35 mm. 



This species is described from ofif the west coast of America and 

 occurs very commonly in our material from this same general region. 

 It is completely involute and the umbilical region very slightly de- 

 pressed. The color is usually gray in all our specimens as in the types. 

 It occurs at a large number of stations but shows very little variation : 

 80, 299, 509, 508, 513, 519, 504, 554, 516, 447, 1037, 2066, 2075, 

 1043, 2010, 2008, 2067, 332, 575, 2063, 59, 278, 290, 296, 298, 241, 

 237. 



Distribution. — From Monterey Bay off Salinas River, south to 

 Sechura Bay, Peru, and at Cartago Bay, Albemarle, Galapagos Islands. 



Haplophragmoides veleronis Cushman and McCulloch, 



new species 

 Plate 7, Fig. 2 

 Test planispiral, very evolute, the last-formed coil overlapping only 

 slightly, deeply umbilicate, periphery broadly rounded ; chambers fairly 

 distinct, numerous, 10-12 in the last- formed coil, increasing very gradu- 

 ally in size as added, in the adult the last-formed chambers sometimes 



