90 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Ammobaculites catenulatus Cushman and McCulloch, new species 



Plate 7, Figs. 11-14 



Test in the early stages close coiled, planispiral, involute, in the 

 adult uncoiling and the chambers often becoming small and beadlike in 

 an irregular linear series; chambers indistinct throughout, except in the 

 last portion where they are somewhat inflated and separated from one 

 another; sutures mostly indistinct; wall rather coarsely arenaceous, sur- 

 face somewhat roughened ; aperture rounded, terminal. Length 0.50- 

 0.75 mm; breadth 0.20-0.30 mm; thickness 0.10-0.12 mm. 



Holotype (AHF no. 12) from locality 2017. 



This species differs from A. cassis (Parker) in the involute coiled 

 portion, obscure sutures and chambers, and the very slender adult por- 

 tion. 



This species in some respects resembles A. calcareus (H. B. Brady) 

 but is a much smaller species and much more irregular. It is widely 

 distributed in our collections and shows considerable variation as indi- 

 cated in our figures. The final chambers sometimes appear as if irregu- 

 larly biserial. Localities: 252, 250, 293, 2029, 244, 298, 2054, 2017, 

 296, 2018, 2066, 2057, 2014, 2007, 2039, 255, 333, 583, 585, ???38. 



Distribution. — Type locality. Point Escondido Bay, Lower Cali- 

 fornia, Mexico, in 20 fms. Numerous stations in the Gulf of California 

 and southward to San Francisco Bay, Ecuador. 



Ammobaculites agglutlnans (d'Orbigny) 



From a single locality "Penang," Station 92, there are three speci- 

 mens that probably belong to this species. They are close coiled at the 

 base with an umbilical depression, the later portion uncoiled, cylindrical, 

 and the wall rather coarsely arenaceous. 



Distribution. — Penang, Malay Peninsula, low tide. 



Genus CYGLAMMINA H. B. Brady, 1876 



Gyclammina pusilla H. B. Brady 

 Plate 8, Fig. 1 



Cyclammina pusilla H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 

 1881, p. 53. — Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, no. 9, 



1894, p. 32, pi. 6, figs. 242-244.— Chapman, Proc. Zool. Soc. London, 



1895, p. 18.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 32.— 

 Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 282, pi. 28, fig. 2.— 



