120 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



smoothly finished ; aperture a low, broad slit at the base of the last cham- 

 ber, in a deep re-entrant. Length of holotype, 0.54 mm.; maximum 

 width, 0.37 mm.; maximum thickness, 0.26 mm. 



Holotype (AHF no. 23) from Hancock Expedition Station 516, 

 Gulf of Guayaquil, Ecuador, latitude 2° 59' S., longitude 81° 12' W., 

 depth 12 fms. It has also been noted at stations 7, 39, 55, 111, 136, 331, 

 332, 503, 505, 509, 516, 517, 531, 540, 543, 547, 553, 558, 584, 2008, 

 2036, 2043, 2057, 2058, and 2079. 



This species is somewhat like Textularia candeiana d'Orbigny, but 

 differs in being much smaller, in having more and lower chambers, in 

 increasing in thickness gradually instead of flaring much in the apertural 

 chambers, and in being subovate in top view instead of rounded as in 

 T. candeiana. 



Distribution. — In shallow waters from California southward into 

 the Gulf of California and off the coast of Peru. 



Textularia calva Lalicker 

 Plate 13, Figs. 6a, b, c, d 



Textularia calva Lalicker, Smithsonian Misc. Coll., vol. 91, no. 22, 

 1935, p. 1, pi. 1, figs. 1, 2. 



Test very large, elongate, roughly triangular in front and side views, 

 broadly ovate in end view, initial end slightly compressed, pointed in the 

 microspheric form, and rounded in the megalospheric form; chambers 

 numerous, low and broad, increasing in height gradually as added; su- 

 tures indistinct except in early portion, somewhat depressed, straight, 

 and slightly oblique; wall coarsely arenaceous, composed of sand grains 

 and calcareous fragments, very roughly finished except on apertural face, 

 where it is rather smoothly finished ; aperture a very low, broad opening 

 at the base of the inner margin of the last-formed chamber; color gray. 

 Length, up to 1.75 mm. ; width, up to 1.10 mm. ; thickness, up to 1.04 mm. 



This species was first noted in the waters of the West Indies and is 

 especially common in the Caribbean Sea. It is common in the collections 

 of the Hancock Expeditions, having been found at the following stations: 

 238, 245, 246, 252, 253, 254, 258, 265, 266, 277, 280, 292, 319, 322, 

 324, 545, 555, 2007, 2012, 2013, 2020, 2032, 2034, 2039, 2044, 2045, 

 2046, 2048, 2052, 2053, 2065, and 2067. 



Distribution. — Numerous station records in the Gulf of California, 

 southward to Colombia in 1 to 75 fms. 



