1 76 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Diameter up to 3 mm; thickness 0.40-1.00 mm. 



Stations: C-10, 60, 61, 67, 76, 136, 1007, 1023, 1050, 1061, 1062, 

 1064, 204, 211, 230, 258, 278, 280, 284, 285, 292, 2011, 2020, 2021, 

 2023, 2024, 2033, 2048, 2082, 2083, 2084, 322, 422, 423, 500. 



Distribution. — This species is recorded as very widely distributed. 

 The specimens from the Eastern Pacific, while apparently typical in most 

 characters, average much smaller than from more tropical waters. An 

 analysis of these station localities shows a geographical range from Ecua- 

 dor into the Gulf of California and northward to points off the coast of 

 California. The depth range is from 2 to 130 fms. 



Elphidium crispum (Linne), var. subcrispum Cushman and 



McCulIoch, new variety 



Plate 20, Fig. 6 



Variety differing from the t^'pical in the smaller size, fewer and higher 

 chambers, shorter and fewer retral processes, and the less distinct, usually 

 imperforate umbo. 



Holotype of variety (AHF no. 40) from locality 421. 



This variety, although occurring with the typical, is simpler in all 

 respects. 



Stations: 111, 222, 311, 317, 322, 406, 409, 411, 421, 452, 460, 463, 

 466, 467, 468, 472, 500, 616. 



Distribution. — Type locality. Station 421, is Anchorage, South Sey- 

 mour Island, Galapagos, in 13 fms. An analysis of station localities indi- 

 cates that two records are off the coast of California in shallow 

 waters; one off Socorro Island, Mexico, in 4-10 fms.; three off Costa 

 Rica in 1-10 fms.; numerous stations off the Galapagos Islands in 13-65 

 fms.; one off La Plata Island, Ecuador, in 10 fms. This species was also 

 found in a bottom sam.ple, 616, from West Hole Island, Whit Sunday 

 Passage, East Coast of Australia, at low tide. 



Elphidium pustulosum Cushman and McCulloch, new species 

 Plate 20, Figs. 7-10 



Test nearly circular in side view, amount of compression variable, 

 periphery acute, keeled, often slightly lobulate, denticulate, umbonal re- 

 gion slightly depressed; chambers distinct, numerous, 12 to 15 in the 

 adult coil, of uniform shape and increasing very gradually in size as added, 

 the edges of the apertural face strongly raised into a conspicuous ridge; 

 sutures strongly curved, retral processes very distinct, usually extending 



