72 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Distribution. — The stations listed above show that this species occurs 

 off San IVIiguel Island, California; along Mexico, in the Gulf of Cali- 

 fornia, off Costa Rica, off Panama, near Albemarle, Galapagos Islands; 

 Gorgona Island, Colombia, and Sechura Bay, Peru. The depth range is 

 from 10 fms. in the Gulf of California to 226 fms. off Guadalupe 

 Island, Mexico. 



Family Lituolidae 



Genus HAPLOPHRAGMOIDES Cushman, 1910 



Haplophragmoides advenum Cushman 



Plate 5, Fig. 7 



Haplophrag7noides advena Cushman, Contr. Cushman Lab. Foram. 

 Res., vol. 1, pt. 2, 1925, p. 38, pi. 6, figs. \a, b; Bull. Scripps Instit. 

 Oceanography, Tech. Ser., vol. 1, no. 10, 1927, p. 135. — Hanna and 

 Church, Journ. Pal., vol. 1, 1928, p. 198. — Church, Journ. Pal., vol. 

 3, 1929, p. 304. — Cushman and Moyer, Contr. Cushman Lab. Foram. 

 Res., vol. 6, pt. 3, 1930, p. 51, pi. 7, fig. 4. 



Test compressed, involute, close coiled, umbilicate, periphery broadly 

 rounded ; last-formed coil consisting of about ten chambers, only slightly 

 inflated; sutures distinct, slightly depressed, very slightly curved; wall 

 arenaceous, mostly of fine material but with numerous angular frag- 

 ments; aperture a low, curved slit in the base of the apertural face. 



Length up to 1.50 mm; diameter 1.10 mm; thickness 0.55 mm. 



This species was originally described from off British Columbia but 

 has been recorded from numerous stations from British Columbia to 

 southern California. There is comparatively little variation shown in 

 our material and this species seems to be well characterized in this area. 

 Localities: 5, 7, 3, 4, 39, 226, 232, 225, 207, 323, 25, A-13, 1034, 

 1042, 1044, 2069. 



Distribution. — From a record of 6 fms. at Skagway, Alaska, to 96 

 fms. off Guadalupe Island, Mexico. The local stations show a depth 

 range from 8 to 170 fms. 



Haplophragmoides columbiense Cushman 

 Plate 5, Figs. 8-10 



Haplophragmoides columbiense Cushman, Contr. Cushman Lab. 

 Foram. Res., vol. 1, pt. 2, 1925, p. 39, pi. 6, figs. 2a, b. 



Test somewhat compressed, close coiled, becoming somewhat um- 

 bilicate in the adult, periphery rounded; chambers distinct, usually 6 



